199 - Hashed Time-Locked Contract transactions
BIP: 199 Layer: Applications Title: Hashed Time-Locked Contract transactions Author: Sean Bowe Daira Hopwood Comments-Summary: No comments yet. Comments-URI: https://github.com/bitcoin/bips/wiki/Comments:BIP-0199 Status: Draft Type: Standards Track Created: 2017-03-27 License: BSD-3-Clause CC0-1.0 ==Abstract== This BIP describes a script for generalized off-chain contract negotiation. ==Summary== A Hashed Time-Locked Contract (HTLC) is a script that permits a designated party (the "seller") to spend funds by disclosing the preimage of a hash. It also permits a second party (the "buyer") to spend the funds after a timeout is reached, in a refund situation. The script takes the following form: OP_IF [HASHOP] OP_EQUALVERIFY OP_DUP OP_HASH160 OP_ELSE [TIMEOUTOP] OP_DROP OP_DUP OP_HASH160 OP_ENDIF OP_EQUALVERIFY OP_CHECKSIG [HASHOP] is either OP_SHA256 or OP_HASH160. [TIMEOUTOP] is either OP_CHECKSEQU...
39 - Mnemonic code for generating deterministic keys
BIP: 39 Layer: Applications Title: Mnemonic code for generating deterministic keys Author: Marek Palatinus Pavol Rusnak Aaron Voisine Sean Bowe Comments-Summary: Unanimously Discourage for implementation Comments-URI: https://github.com/bitcoin/bips/wiki/Comments:BIP-0039 Status: Proposed Type: Standards Track Created: 2013-09-10 ==Abstract== This BIP describes the implementation of a mnemonic code or mnemonic sentence -- a group of easy to remember words -- for the generation of deterministic wallets. It consists of two parts: generating the mnemonic and converting it into a binary seed. This seed can be later used to generate deterministic wallets using BIP-0032 or similar methods. ==Motivation== A mnemonic code or sentence is superior for human interaction compared to the handling of raw binary or hexadecimal representations of a wallet seed. The sentence could be written on paper or spoken over the telephone. This guide is meant to be...
123 - BIP Classification
BIP: 123 Title: BIP Classification Author: Eric Lombrozo Comments-Summary: No comments yet. Comments-URI: https://github.com/bitcoin/bips/wiki/Comments:BIP-0123 Status: Active Type: Process Created: 2015-08-26 License: CC0-1.0 GNU-All-Permissive ==Abstract== This document describes a classification scheme for BIPs. BIPs are classified by system layers with lower numbered layers involving more intricate interoperability requirements. The specification defines the layers and sets forth specific criteria for deciding to which layer a particular standards BIP belongs. ==Copyright== This BIP is dual-licensed under the Creative Commons CC0 1.0 Universal and GNU All-Permissive licenses. ==Motivation== Bitcoin is a system involving a number of different standards. Some standards are absolute requirements for interoperability while others can be considered optional, giving implementors a choice of whether to support them. In order to have a BIP process which more closely ...