Bitcoin Addresses, P2SH Format Explanation and More

Base58 (Bitcoin addresses) vs Base64 Encoding

Base58 (Bitcoin addresses) vs Base64 Encoding submitted by kvothe1956 to Bitcoin [link] [comments]

"The fact that bitcoin uses the same algorithm for address encoding as it does for proof of work is severely overlooked. It's probably the most important part of bitcoin's design."

submitted by cryptorebel to bitcoincashSV [link] [comments]

"The fact that bitcoin uses the same algorithm for address encoding as it does for proof of work is severely overlooked. It's probably the most important part of bitcoin's design."

submitted by ABitcoinAllBot to BitcoinAll [link] [comments]

10-06 21:43 - 'Instead of "scanning the private key", you could have a QR code encoding a website address (the QR would allow to login inside the website, which means it can't be accessed without scanning this QR code). / Then, on the w...' by /u/presse_citron removed from /r/Bitcoin within 23-33min

'''
Instead of "scanning the private key", you could have a QR code encoding a website address (the QR would allow to login inside the website, which means it can't be accessed without scanning this QR code).
Then, on the website in question, you could have like a form with the field: "Adress to send the money",: where the winner can enter his own address.
You could automate it in the form by setting a bunch of transaction in advance without the address to send to, and where each one is chosen only when 24 hours have passed.
Just an idea.

EDIT: Oh you don't want a website! So it's quite straightforward: you must lock your BTC inside several addresses with a 24-hour timelock interval: here's a tutorial: [[link]2
Then you can safely divulgate the private key of these ones and each person, scanning this with Electrum/samourai for example, and only if the timelock expired, can transfer the BTC inside to his own address.

'''
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Author: presse_citron
1: ste*mit.c**/bitc*in/@da**/how-t****ea**-ti*e-loc****tran*actions-with*bitcoin-fr*e-b*tcoi*s*insid* 2: steem*t.co*/bitc*in/@daa****w-to-cr*ate-time*locke*-tran*ac*i**s-***h-bit*o*n-f**e-*itcoin*-i*s**e]^^1
Unknown links are censored to prevent spreading illicit content.
submitted by removalbot to removalbot [link] [comments]

Dear Shapeshift. A new address format ("Cash Address") for Bitcoin Cash is coming. There's a great library written PHP, developed by BTC.com, a subsidiary of Bitmain exists. Moreover, this library can do BTC's Bech32 encoding/decoding too. Please be aware of this library. Thank you.

Dear Shapeshift. A new address format ( submitted by uMCCCS to shapeshiftio [link] [comments]

Bug in a Bitcoin wallet or app? This zero address (literally 0 encoded as address) is receiving small amounts of BTC, already accumulated 66+

submitted by H_M_X_ to Bitcoin [link] [comments]

Bug in a Bitcoin wallet or app? This zero address (literally 0 encoded as address) is receiving small amounts of BTC, already accumulated 66+

submitted by ABitcoinAllBot to BitcoinAll [link] [comments]

The QrCodeR add-on for Firefox provides a right-click dialog for "Encode Selection to QR code". It makes scanning bitcoin addresses a snap.

The QrCodeR add-on for Firefox provides a right-click dialog for submitted by secret_bitcoin_login to Bitcoin [link] [comments]

base58check - Go implementation of base58check to encode Bitcoin addresses

submitted by datskinnyguy_ to golang [link] [comments]

Could a bitcoin address be encoded to a mag strip, put on a card, and swiped in an existing retail credit card device?

Seems like it could be integrated seamlessly that way at point of sale. Existing payment processing companies could get on board or partner with bitpay etc. No app or QR reader required, meaning grandma doesn't have to learn new ways of doing things. Thoughts?
submitted by FreyasCloak to Bitcoin [link] [comments]

base58check - Go implementation of base58check to encode Bitcoin addresses

base58check - Go implementation of base58check to encode Bitcoin addresses submitted by datskinnyguy_ to opensource [link] [comments]

base58check - Go implementation of base58check to encode Bitcoin addresses

submitted by datskinnyguy_ to coolgithubprojects [link] [comments]

09-07 18:12 - '[quote] The M- and 3-addresses can be used interchangeably (in wallets that support that)... Basically, they *are* the same address, just encoded in different ways. / To convert between them, use this page: [link] / If you...' by /u/btctroubadour removed from /r/Bitcoin within 0-10min

'''
What am I missing here?
The M- and 3-addresses can be used interchangeably (in wallets that support that)... Basically, they are the same address, just encoded in different ways.
To convert between them, use this page: [link]2
If you enter your M-address (returned by the addwitnessaddress command), you'll get a 3-address back, which should be the same as the address you sent your Litecoin to (if you've done the other steps correctly).
Another way to do it is to look up the address using the [link]3 explorer, as it will show both the 3- and the M-address for any P2SH address you view.
In other words, you don't need to do anything to add the 3-address to Litecoin Core. It's already being monitored, it's just being displayed as an M-address.
Do I need to even sync the Bitcoin Core up with my computer?
You don't need to do anything in Bitcoin Core. The only reason I told MeGustanLasFajitas to install both Litecoin Core and Bitcoin Core was that segwit hadn't activated on the Bitcoin chain yet, so he'd "train" using Litecoin Core while later using Bitcoin Core for the real recovery of his BTC.
Now that segwit's activated on both chains, people will just need the software that corresponds to their currency (i.e. Litecoin Core for LTC and Bitcoin Core for BTC, obviously :)).
(I guess the lack of clarity regarding this makes the guide above somewhat hard to follow at the end.)
Help??
If the key you've added actually corresponds to the 3-address that your money were sent to, the last step you may be missing is to do a resync? I explained how to do that in [this post]1 , further down in the original thread.
Good luck! :)
'''
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Author: btctroubadour
1: https://www.reddit.com/Bitcoin/comments/6sfnl2/segwit_has_been_locked_in_congratulations_everyone/dm2t8iq/ 2: lite**in-p*ojec***ithu**io*p2sh*convert/ 3: chainz.cry*t**d*info/*tc*
Unknown links are censored to prevent spreading illicit content.
submitted by removalbot to removalbot [link] [comments]

base58check - Go implementation of base58check to encode Bitcoin addresses

base58check - Go implementation of base58check to encode Bitcoin addresses submitted by datskinnyguy_ to SideProject [link] [comments]

Why are bitcoin addresses taken through base 58 encoding?

Why are similar lookin gcharacters like "l" and "I" and "o" and "0" removed from addresses? Is it because the qr scanner cannot read it or possibility of human error? thanks in advance.
submitted by bitbetta to Bitcoin [link] [comments]

Why are bitcoin addresses taken through base 58 encoding? /r/Bitcoin

Why are bitcoin addresses taken through base 58 encoding? /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

iOS Bitcoin wallet makers, could we please get a bit more consistency in your handling of P2SH addresses and things as simple as a "bitcoin:" prefix encoded in a QR code?

iOS Bitcoin wallet makers, could we please get a bit more consistency in your handling of P2SH addresses and things as simple as a submitted by chrismarquardt to Bitcoin [link] [comments]

How are Bitcoin barcodes generated?

Curious about learning how they're generated programmatically from public addresses. Can it be done with a simple python script or is there some Github repository?
submitted by BlockchainBears to Bitcoin [link] [comments]

Proposal: The Sia Foundation

Vision Statement

A common sentiment is brewing online; a shared desire for the internet that might have been. After decades of corporate encroachment, you don't need to be a power user to realize that something has gone very wrong.
In the early days of the internet, the future was bright. In that future, when you sent an instant message, it traveled directly to the recipient. When you needed to pay a friend, you announced a transfer of value to their public key. When an app was missing a feature you wanted, you opened up the source code and implemented it. When you took a picture on your phone, it was immediately encrypted and backed up to storage that you controlled. In that future, people would laugh at the idea of having to authenticate themselves to some corporation before doing these things.
What did we get instead? Rather than a network of human-sized communities, we have a handful of enormous commons, each controlled by a faceless corporate entity. Hey user, want to send a message? You can, but we'll store a copy of it indefinitely, unencrypted, for our preference-learning algorithms to pore over; how else could we slap targeted ads on every piece of content you see? Want to pay a friend? You can—in our Monopoly money. Want a new feature? Submit a request to our Support Center and we'll totally maybe think about it. Want to backup a photo? You can—inside our walled garden, which only we (and the NSA, of course) can access. Just be careful what you share, because merely locking you out of your account and deleting all your data is far from the worst thing we could do.
You rationalize this: "MEGACORP would never do such a thing; it would be bad for business." But we all know, at some level, that this state of affairs, this inversion of power, is not merely "unfortunate" or "suboptimal" – No. It is degrading. Even if MEGACORP were purely benevolent, it is degrading that we must ask its permission to talk to our friends; that we must rely on it to safeguard our treasured memories; that our digital lives are completely beholden to those who seek only to extract value from us.
At the root of this issue is the centralization of data. MEGACORP can surveil you—because your emails and video chats flow through their servers. And MEGACORP can control you—because they hold your data hostage. But centralization is a solution to a technical problem: How can we make the user's data accessible from anywhere in the world, on any device? For a long time, no alternative solution to this problem was forthcoming.
Today, thanks to a confluence of established techniques and recent innovations, we have solved the accessibility problem without resorting to centralization. Hashing, encryption, and erasure encoding got us most of the way, but one barrier remained: incentives. How do you incentivize an anonymous stranger to store your data? Earlier protocols like BitTorrent worked around this limitation by relying on altruism, tit-for-tat requirements, or "points" – in other words, nothing you could pay your electric bill with. Finally, in 2009, a solution appeared: Bitcoin. Not long after, Sia was born.
Cryptography has unleashed the latent power of the internet by enabling interactions between mutually-distrustful parties. Sia harnesses this power to turn the cloud storage market into a proper marketplace, where buyers and sellers can transact directly, with no intermediaries, anywhere in the world. No more silos or walled gardens: your data is encrypted, so it can't be spied on, and it's stored on many servers, so no single entity can hold it hostage. Thanks to projects like Sia, the internet is being re-decentralized.
Sia began its life as a startup, which means it has always been subjected to two competing forces: the ideals of its founders, and the profit motive inherent to all businesses. Its founders have taken great pains to never compromise on the former, but this often threatened the company's financial viability. With the establishment of the Sia Foundation, this tension is resolved. The Foundation, freed of the obligation to generate profit, is a pure embodiment of the ideals from which Sia originally sprung.
The goals and responsibilities of the Foundation are numerous: to maintain core Sia protocols and consensus code; to support developers building on top of Sia and its protocols; to promote Sia and facilitate partnerships in other spheres and communities; to ensure that users can easily acquire and safely store siacoins; to develop network scalability solutions; to implement hardforks and lead the community through them; and much more. In a broader sense, its mission is to commoditize data storage, making it cheap, ubiquitous, and accessible to all, without compromising privacy or performance.
Sia is a perfect example of how we can achieve better living through cryptography. We now begin a new chapter in Sia's history. May our stewardship lead it into a bright future.
 

Overview

Today, we are proposing the creation of the Sia Foundation: a new non-profit entity that builds and supports distributed cloud storage infrastructure, with a specific focus on the Sia storage platform. What follows is an informal overview of the Sia Foundation, covering two major topics: how the Foundation will be funded, and what its funds will be used for.

Organizational Structure

The Sia Foundation will be structured as a non-profit entity incorporated in the United States, likely a 501(c)(3) organization or similar. The actions of the Foundation will be constrained by its charter, which formalizes the specific obligations and overall mission outlined in this document. The charter will be updated on an annual basis to reflect the current goals of the Sia community.
The organization will be operated by a board of directors, initially comprising Luke Champine as President and Eddie Wang as Chairman. Luke Champine will be leaving his position at Nebulous to work at the Foundation full-time, and will seek to divest his shares of Nebulous stock along with other potential conflicts of interest. Neither Luke nor Eddie personally own any siafunds or significant quantities of siacoin.

Funding

The primary source of funding for the Foundation will come from a new block subsidy. Following a hardfork, 30 KS per block will be allocated to the "Foundation Fund," continuing in perpetuity. The existing 30 KS per block miner reward is not affected. Additionally, one year's worth of block subsidies (approximately 1.57 GS) will be allocated to the Fund immediately upon activation of the hardfork.
As detailed below, the Foundation will provably burn any coins that it cannot meaningfully spend. As such, the 30 KS subsidy should be viewed as a maximum. This allows the Foundation to grow alongside Sia without requiring additional hardforks.
The Foundation will not be funded to any degree by the possession or sale of siafunds. Siafunds were originally introduced as a means of incentivizing growth, and we still believe in their effectiveness: a siafund holder wants to increase the amount of storage on Sia as much as possible. While the Foundation obviously wants Sia to succeed, its driving force should be its charter. Deriving significant revenue from siafunds would jeopardize the Foundation's impartiality and focus. Ultimately, we want the Foundation to act in the best interests of Sia, not in growing its own budget.

Responsibilities

The Foundation inherits a great number of responsibilities from Nebulous. Each quarter, the Foundation will publish the progress it has made over the past quarter, and list the responsibilities it intends to prioritize over the coming quarter. This will be accompanied by a financial report, detailing each area of expenditure over the past quarter, and forecasting expenditures for the coming quarter. Below, we summarize some of the myriad responsibilities towards which the Foundation is expected to allocate its resources.

Maintain and enhance core Sia software

Arguably, this is the most important responsibility of the Foundation. At the heart of Sia is its consensus algorithm: regardless of other differences, all Sia software must agree upon the content and rules of the blockchain. It is therefore crucial that the algorithm be stewarded by an entity that is accountable to the community, transparent in its decision-making, and has no profit motive or other conflicts of interest.
Accordingly, Sia’s consensus functionality will no longer be directly maintained by Nebulous. Instead, the Foundation will release and maintain an implementation of a "minimal Sia full node," comprising the Sia consensus algorithm and P2P networking code. The source code will be available in a public repository, and signed binaries will be published for each release.
Other parties may use this code to provide alternative full node software. For example, Nebulous may extend the minimal full node with wallet, renter, and host functionality. The source code of any such implementation may be submitted to the Foundation for review. If the code passes review, the Foundation will provide "endorsement signatures" for the commit hash used and for binaries compiled internally by the Foundation. Specifically, these signatures assert that the Foundation believes the software contains no consensus-breaking changes or other modifications to imported Foundation code. Endorsement signatures and Foundation-compiled binaries may be displayed and distributed by the receiving party, along with an appropriate disclaimer.
A minimal full node is not terribly useful on its own; the wallet, renter, host, and other extensions are what make Sia a proper developer platform. Currently, the only implementations of these extensions are maintained by Nebulous. The Foundation will contract Nebulous to ensure that these extensions continue to receive updates and enhancements. Later on, the Foundation intends to develop its own implementations of these extensions and others. As with the minimal node software, these extensions will be open source and available in public repositories for use by any Sia node software.
With the consensus code now managed by the Foundation, the task of implementing and orchestrating hardforks becomes its responsibility as well. When the Foundation determines that a hardfork is necessary (whether through internal discussion or via community petition), a formal proposal will be drafted and submitted for public review, during which arguments for and against the proposal may be submitted to a public repository. During this time, the hardfork code will be implemented, either by Foundation employees or by external contributors working closely with the Foundation. Once the implementation is finished, final arguments will be heard. The Foundation board will then vote whether to accept or reject the proposal, and announce their decision along with appropriate justification. Assuming the proposal was accepted, the Foundation will announce the block height at which the hardfork will activate, and will subsequently release source code and signed binaries that incorporate the hardfork code.
Regardless of the Foundation's decision, it is the community that ultimately determines whether a fork is accepted or rejected – nothing can change that. Foundation node software will never automatically update, so all forks must be explicitly adopted by users. Furthermore, the Foundation will provide replay and wipeout protection for its hard forks, protecting other chains from unintended or malicious reorgs. Similarly, the Foundation will ensure that any file contracts formed prior to a fork activation will continue to be honored on both chains until they expire.
Finally, the Foundation also intends to pursue scalability solutions for the Sia blockchain. In particular, work has already begun on an implementation of Utreexo, which will greatly reduce the space requirements of fully-validating nodes (allowing a full node to be run on a smartphone) while increasing throughput and decreasing initial sync time. A hardfork implementing Utreexo will be submitted to the community as per the process detailed above.
As this is the most important responsibility of the Foundation, it will receive a significant portion of the Foundation’s budget, primarily in the form of developer salaries and contracting agreements.

Support community services

We intend to allocate 25% of the Foundation Fund towards the community. This allocation will be held and disbursed in the form of siacoins, and will pay for grants, bounties, hackathons, and other community-driven endeavours.
Any community-run service, such as a Skynet portal, explorer or web wallet, may apply to have its costs covered by the Foundation. Upon approval, the Foundation will reimburse expenses incurred by the service, subject to the exact terms agreed to. The intent of these grants is not to provide a source of income, but rather to make such services "break even" for their operators, so that members of the community can enrich the Sia ecosystem without worrying about the impact on their own finances.

Ensure easy acquisition and storage of siacoins

Most users will acquire their siacoins via an exchange. The Foundation will provide support to Sia-compatible exchanges, and pursue relevant integrations at its discretion, such as Coinbase's new Rosetta standard. The Foundation may also release DEX software that enables trading cryptocurrencies without the need for a third party. (The Foundation itself will never operate as a money transmitter.)
Increasingly, users are storing their cryptocurrency on hardware wallets. The Foundation will maintain the existing Ledger Nano S integration, and pursue further integrations at its discretion.
Of course, all hardware wallets must be paired with software running on a computer or smartphone, so the Foundation will also develop and/or maintain client-side wallet software, including both full-node wallets and "lite" wallets. Community-operated wallet services, i.e. web wallets, may be funded via grants.
Like core software maintenance, this responsibility will be funded in the form of developer salaries and contracting agreements.

Protect the ecosystem

When it comes to cryptocurrency security, patching software vulnerabilities is table stakes; there are significant legal and social threats that we must be mindful of as well. As such, the Foundation will earmark a portion of its fund to defend the community from legal action. The Foundation will also safeguard the network from 51% attacks and other threats to network security by implementing softforks and/or hardforks where necessary.
The Foundation also intends to assist in the development of a new FOSS software license, and to solicit legal memos on various Sia-related matters, such as hosting in the United States and the EU.
In a broader sense, the establishment of the Foundation makes the ecosystem more robust by transferring core development to a more neutral entity. Thanks to its funding structure, the Foundation will be immune to various forms of pressure that for-profit companies are susceptible to.

Drive adoption of Sia

Although the overriding goal of the Foundation is to make Sia the best platform it can be, all that work will be in vain if no one uses the platform. There are a number of ways the Foundation can promote Sia and get it into the hands of potential users and developers.
In-person conferences are understandably far less popular now, but the Foundation can sponsor and/or participate in virtual conferences. (In-person conferences may be held in the future, permitting circumstances.) Similarly, the Foundation will provide prizes for hackathons, which may be organized by community members, Nebulous, or the Foundation itself. Lastly, partnerships with other companies in the cryptocurrency space—or the cloud storage space—are a great way to increase awareness of Sia. To handle these responsibilities, one of the early priorities of the Foundation will be to hire a marketing director.

Fund Management

The Foundation Fund will be controlled by a multisig address. Each member of the Foundation's board will control one of the signing keys, with the signature threshold to be determined once the final composition of the board is known. (This threshold may also be increased or decreased if the number of board members changes.) Additionally, one timelocked signing key will be controlled by David Vorick. This key will act as a “dead man’s switch,” to be used in the event of an emergency that prevents Foundation board members from reaching the signature threshold. The timelock ensures that this key cannot be used unless the Foundation fails to sign a transaction for several months.
On the 1st of each month, the Foundation will use its keys to transfer all siacoins in the Fund to two new addresses. The first address will be controlled by a high-security hot wallet, and will receive approximately one month's worth of Foundation expenditures. The second address, receiving the remaining siacoins, will be a modified version of the source address: specifically, it will increase the timelock on David Vorick's signing key by one month. Any other changes to the set of signing keys, such as the arrival or departure of board members, will be incorporated into this address as well.
The Foundation Fund is allocated in SC, but many of the Foundation's expenditures must be paid in USD or other fiat currency. Accordingly, the Foundation will convert, at its discretion, a portion of its monthly withdrawals to fiat currency. We expect this conversion to be primarily facilitated by private "OTC" sales to accredited investors. The Foundation currently has no plans to speculate in cryptocurrency or other assets.
Finally, it is important that the Foundation adds value to the Sia platform well in excess of the inflation introduced by the block subsidy. For this reason, the Foundation intends to provably burn, on a quarterly basis, any coins that it cannot allocate towards any justifiable expense. In other words, coins will be burned whenever doing so provides greater value to the platform than any other use. Furthermore, the Foundation will cap its SC treasury at 5% of the total supply, and will cap its USD treasury at 4 years’ worth of predicted expenses.
 
Addendum: Hardfork Timeline
We would like to see this proposal finalized and accepted by the community no later than September 30th. A new version of siad, implementing the hardfork, will be released no later than October 15th. The hardfork will activate at block 293220, which is expected to occur around 12pm EST on January 1st, 2021.
 
Addendum: Inflation specifics
The total supply of siacoins as of January 1st, 2021 will be approximately 45.243 GS. The initial subsidy of 1.57 GS thus increases the supply by 3.47%, and the total annual inflation in 2021 will be at most 10.4% (if zero coins are burned). In 2022, total annual inflation will be at most 6.28%, and will steadily decrease in subsequent years.
 

Conclusion

We see the establishment of the Foundation as an important step in the maturation of the Sia project. It provides the ecosystem with a sustainable source of funding that can be exclusively directed towards achieving Sia's ambitious goals. Compared to other projects with far deeper pockets, Sia has always punched above its weight; once we're on equal footing, there's no telling what we'll be able to achieve.
Nevertheless, we do not propose this change lightly, and have taken pains to ensure that the Foundation will act in accordance with the ideals that this community shares. It will operate transparently, keep inflation to a minimum, and respect the user's fundamental role in decentralized systems. We hope that everyone in the community will consider this proposal carefully, and look forward to a productive discussion.
submitted by lukechampine to siacoin [link] [comments]

Fun with OP_HODL (CheckLockTimeVerify)

Finally got around to messing around with python-bitcoinlib, and I'm very impressed. Great work by Peter Todd. I went ahead and cooked up a sample based off of the ones provided to test OP_HODL. This is bitcoin contract that can lock funds in a UTXO until a specified time has arrived.
This script will lock funds in a UTXO until "10/13/2020 @ 6:55am (UTC)". Though realistically you really need to wait about an hour past your expiry time since the nLockTime logic uses that average of the last 11 blocks as a clock, not the last block.
Here's a breakdown:
First look at the witness program on the spending txn.

If we add the deserialize the witnessScript this is what we get:
< OP_CHECKLOCKTIMEVERIFY OP_DROP OP_CHECKSIG>
Looking at the 2nd output of the funding txn, you should see the ScriptPubKey is simply OP_0 to signal segwit and the hash of the witness script.
OP_0
And of course, our nLockTime in our spending TXN matches our expiry, and our sequence in our spending txn is encoded to allow nLockTime processing.
One thing that was interesting with nLockTime txns is that they are completely invalid before they "ripen". You can't even store them in your wallet. You just have to wait to broadcast until the right time transpires. Broadcasting early will fail with a non-final error.
The CoinBin wallet is the only one I know of that allows you to create OP_HODL addresses, but I'm not certain they provide a way to spend them.
submitted by brianddk to Bitcoin [link] [comments]

Gridcoin 5.0.0.0-Mandatory "Fern" Release

https://github.com/gridcoin-community/Gridcoin-Research/releases/tag/5.0.0.0
Finally! After over ten months of development and testing, "Fern" has arrived! This is a whopper. 240 pull requests merged. Essentially a complete rewrite that was started with the scraper (the "neural net" rewrite) in "Denise" has now been completed. Practically the ENTIRE Gridcoin specific codebase resting on top of the vanilla Bitcoin/Peercoin/Blackcoin vanilla PoS code has been rewritten. This removes the team requirement at last (see below), although there are many other important improvements besides that.
Fern was a monumental undertaking. We had to encode all of the old rules active for the v10 block protocol in new code and ensure that the new code was 100% compatible. This had to be done in such a way as to clear out all of the old spaghetti and ring-fence it with tightly controlled class implementations. We then wrote an entirely new, simplified ruleset for research rewards and reengineered contracts (which includes beacon management, polls, and voting) using properly classed code. The fundamentals of Gridcoin with this release are now on a very sound and maintainable footing, and the developers believe the codebase as updated here will serve as the fundamental basis for Gridcoin's future roadmap.
We have been testing this for MONTHS on testnet in various stages. The v10 (legacy) compatibility code has been running on testnet continuously as it was developed to ensure compatibility with existing nodes. During the last few months, we have done two private testnet forks and then the full public testnet testing for v11 code (the new protocol which is what Fern implements). The developers have also been running non-staking "sentinel" nodes on mainnet with this code to verify that the consensus rules are problem-free for the legacy compatibility code on the broader mainnet. We believe this amount of testing is going to result in a smooth rollout.
Given the amount of changes in Fern, I am presenting TWO changelogs below. One is high level, which summarizes the most significant changes in the protocol. The second changelog is the detailed one in the usual format, and gives you an inkling of the size of this release.

Highlights

Protocol

Note that the protocol changes will not become active until we cross the hard-fork transition height to v11, which has been set at 2053000. Given current average block spacing, this should happen around October 4, about one month from now.
Note that to get all of the beacons in the network on the new protocol, we are requiring ALL beacons to be validated. A two week (14 day) grace period is provided by the code, starting at the time of the transition height, for people currently holding a beacon to validate the beacon and prevent it from expiring. That means that EVERY CRUNCHER must advertise and validate their beacon AFTER the v11 transition (around Oct 4th) and BEFORE October 18th (or more precisely, 14 days from the actual date of the v11 transition). If you do not advertise and validate your beacon by this time, your beacon will expire and you will stop earning research rewards until you advertise and validate a new beacon. This process has been made much easier by a brand new beacon "wizard" that helps manage beacon advertisements and renewals. Once a beacon has been validated and is a v11 protocol beacon, the normal 180 day expiration rules apply. Note, however, that the 180 day expiration on research rewards has been removed with the Fern update. This means that while your beacon might expire after 180 days, your earned research rewards will be retained and can be claimed by advertising a beacon with the same CPID and going through the validation process again. In other words, you do not lose any earned research rewards if you do not stake a block within 180 days and keep your beacon up-to-date.
The transition height is also when the team requirement will be relaxed for the network.

GUI

Besides the beacon wizard, there are a number of improvements to the GUI, including new UI transaction types (and icons) for staking the superblock, sidestake sends, beacon advertisement, voting, poll creation, and transactions with a message. The main screen has been revamped with a better summary section, and better status icons. Several changes under the hood have improved GUI performance. And finally, the diagnostics have been revamped.

Blockchain

The wallet sync speed has been DRASTICALLY improved. A decent machine with a good network connection should be able to sync the entire mainnet blockchain in less than 4 hours. A fast machine with a really fast network connection and a good SSD can do it in about 2.5 hours. One of our goals was to reduce or eliminate the reliance on snapshots for mainnet, and I think we have accomplished that goal with the new sync speed. We have also streamlined the in-memory structures for the blockchain which shaves some memory use.
There are so many goodies here it is hard to summarize them all.
I would like to thank all of the contributors to this release, but especially thank @cyrossignol, whose incredible contributions formed the backbone of this release. I would also like to pay special thanks to @barton2526, @caraka, and @Quezacoatl1, who tirelessly helped during the testing and polishing phase on testnet with testing and repeated builds for all architectures.
The developers are proud to present this release to the community and we believe this represents the starting point for a true renaissance for Gridcoin!

Summary Changelog

Accrual

Changed

Most significantly, nodes calculate research rewards directly from the magnitudes in EACH superblock between stakes instead of using a two- or three- point average based on a CPID's current magnitude and the magnitude for the CPID when it last staked. For those long-timers in the community, this has been referred to as "Superblock Windows," and was first done in proof-of-concept form by @denravonska.

Removed

Beacons

Added

Changed

Removed

Unaltered

As a reminder:

Superblocks

Added

Changed

Removed

Voting

Added

Changed

Removed

Detailed Changelog

[5.0.0.0] 2020-09-03, mandatory, "Fern"

Added

Changed

Removed

Fixed

submitted by jamescowens to gridcoin [link] [comments]

p2sh vs bech32?

Hello I’ve been watching videos on SegWit and understand it pretty well, however I don’t understand what P2SH vs bech32?
I understand that one starts with a “3” and the other starts with a “bc1” but that’s as far as I’m finding on YouTube and reddit, can someone help clear this up for me? Thank you.
submitted by wetwoodfloors to Bitcoin [link] [comments]

Example of Encrypting and Printing Out Bitcoin Private Key Segwit addresses with python - keyhash Pieter Wuille: New Address Type for SegWit Addresses - YouTube 10 Convert Bitcoin address to Hash160 address Hack bitcoin (private script) 2019

Encoding my Bitcoin Address with Base58 encoding. 1. Convert byte string into a base58 string using Base58Check encoding. 2. Convert between String/Hex/Byte in Java for sha256 - wrong format? 0. base58 cannot get 34 chars results (as Bitcoin address does) but 68 chars. 2. encode/decode Base-58 C++. 1. How to convert script hash to base58 address? Hot Network Questions Was the Geocentric Model ... Base58 Encoding Table. Address format. Bitcoin P2PKH addresses begin with the version byte value 0x00 denoting the address type and end with a 4 byte checksum. First we prepend the version byte ... All parts of the legacy bitcoin address are encrypted with typos protection using the Base58Check encoding system. The code is based on the Latin alphabet. You will never see symbols in such a bitcoin address that can be easily confused with each other (plus and minus signs, slash, zero, uppercase letters “o” and “i”, lowercase “L”). According to Base58Check, only the following 58 ... Encoding a private key. Base58Check encoding is also used for encoding ECDSA private keys in the wallet import format. This is formed exactly the same as a Bitcoin address, except that 0x80 is used for the version/application byte, and the payload is 32 bytes instead of 20 (a private key in Bitcoin is a single 32-byte unsigned big-endian ... In the Bitcoin Address Generator as the private key is incorporated into the compressed encoding of the public key, it is changed to incorporate an extra 0x01 byte at the end. This results in a Base58 form that starts with a “K” or “L.” Later versions of this page will update the code to allow for this change and to represent the keys on the page in both formats. STEP 2.3: CALCULATE ...

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Example of Encrypting and Printing Out Bitcoin Private Key

I give a demonstration on how you can export, encrypt, and print out your Bitcoin wallet (private key). Site for the Base 64 encoder I used: https://sourcefo... Using python 3.6 to generate segwit addresses. This video is part of a series of tutorials about the bitcoin protocol. In this video, I'll generate the key pair and the key hash that lays at the ... Convert Bitcoin address to Hash160 address Tool written in Perl: http://lenschulwitz.com/base58 convert text file. script download Convert Bitcoin address to... Bitpy is a Bitcoin Graphical Environmental developed by Shlomi Zeltsinger and Alexis Gallepe. Check out our source code at github: https://github.com/Shultzi... Here's a link to the slides: https://prezi.com/gwnjkqjqjjbz/bech32-a-base32-address-format/ BIP Proposal: https://github.com/sipa/bech32/blob/master/bip-wita...

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