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Elichai Turkel elichai

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@atoponce
atoponce / resources.md
Last active January 1, 2024 19:12
Link resources for ##crypto on Freenode
@rylev
rylev / rust-in-large-organizations-notes.md
Last active February 2, 2023 10:08
Rust in Large Organizations Notes

Rust in Large Organizations

Initially taken by Niko Matsakis and lightly edited by Ryan Levick

Agenda

  • Introductions
  • Cargo inside large build systems
  • FFI
  • Foundations and financial support
@fjahr
fjahr / rolling_utxo_set_hash.md
Last active April 30, 2021 17:00
Rolling UTXO Set Hash proposal

Rolling UTXO Set Hash proposal

TL;DR

I have picked up Pieter Wuille's proposal from 2017 to use a rolling hash for the UTXO set hash. It deals with the problem of a long computation time of the UTXO set hash which results in a slow RPC call gettxoutsetinfo (can take several minutes depending on hardware). I investigated three hash functions: MuHash, ECMH and LtHash and started implementing them in Bitcoin Core for comparison. However only MuHash has a rolling hash implementation

@jachiang
jachiang / TaprootDescriptorProposal.md
Last active July 23, 2019 19:24
Taproot Output Descriptor Proposal

Taproot Descriptor Proposal

Status: Discussion

Co-Authors: Elichai Turkel (elichai.turkel@gmail.com), James Chiang (james.chiang@protonmail.com)

Output descriptor support in Bitcoin Core provides an intuitive language which simplifies how wallets determine which UTXOs they can sign and spend. A descriptor expression today expands to a single output script of a given output.

However, with the introduction of Taproot, a given output can now have multiple spending paths at different heights of the taproot tree. We wish to propose a taproot output descriptor which encapsulates both individual tapscripts and mid-level tapscript descriptors while encoding the intended taptree structure.

@fjahr
fjahr / bitcoin_debugging.md
Last active March 6, 2024 11:43
Debugging Bitcoin Core

Moved to https://github.com/fjahr/debugging_bitcoin to allow for better collaboration.

This document is currently optimized for MacOS. If you would like to help me add Linux equivalent commands, please let me know.

Debugging Bitcoin Core

This guide is designed to give beginners of C++ development and/or people new to the bitcoin core code base an overview of the tools available for debugging issues as well as giving hints where issues may trip you up.

@elichai
elichai / schnorr_tweaks.md
Last active July 2, 2019 14:09
Schnorr constructions

Pay to Contract

P' = P + H(P||S)G
d' = d + H(P||S)
Examples:

  1. P is a public key, S is a bitcoin script with a locktime for a different Key(Q).
    The owner of P can sign for P' and spend the output regularly(by signing with d').
    OR the owner of Q can provide P and S and then get evaluated by S as a regular script. (and if the script evaluates to true he can get the money)

  2. S is a hash of a document and this is used to timestamp data, not the best way since you need this to be able to sign on the transaction later and this isn't saved anywhere.