Pay to Merkle Tree — BIP360 e defesa contra ataques quânticos

Quer saber como o Bitcoin pode ficar resistente a ataques quânticos? 🤯

• O que é: Pay to Merkle Tree — não é pay-to-hash, nem pay-to-public-key, nem pay-to-script-hash; é pay-to-Merkle-Tree.
• Projeto: Isso é o que estão desenvolvendo com a BIP360, agora oficialmente no ar.
• Técnica: usam estruturas Merkle e algoritmos que complicam a vida do computador...

#BIP360 #MerkleTree #blockchain #criptografia #quantum #MorningCrypto

What is the checksum of a directory? Introducing sumfolder1

by @beet_keeper

In Fractal in detail: What information is in a file-format identification report? I describe the different ways of dissecting the information in a file-format identification report.

A file-format identification report is a data-rich artifact created during the processing of digital collections.

I had the idea of using this type of report to attach a checksum to an archival collection (files, and directories) as a whole. This is done using methods akin to a Merkle Tree, similar to those in source control systems such as Git, and Web3 Blockchain projects like Bitcoin.

This project is called sumfolder1.

#Archives #Bitcoin #checksums #collectionIntegrity #digipres #DigitalPreservation #DROID #MerkleTree #Python #SoftwareDevelopment #web3

I wrote a small blog post about using Merkle trees in Go — not for blockchains this time, but just to track changes in a local folder.

It watches file contents, recalculates a Merkle root, and can even verify proofs or visualize the tree in your terminal.

Nothing fancy — just a fun and useful exercise.

https://yalinpala.dev/blog/tracking-folder-changes-with-merkle-trees-in-go

#go #MerkleTree

How to sign a bit: generate two random values. Compute the SHA256 of each, and publish the SHAs labeled 0 and 1. Now to sign a 0, publish the first random value. To sign a 1, publish the second. Verification is just confirming the random value hashes to the previously published hash.

Sounds impractical? You can build a whole practical digital signature system on that basis, and it's quantum-resistant. #MerkleTree