74 - Allow zero value OP_RETURN in Payment Protocol
BIP: 74 source Layer: Applications Title: Allow zero value OP_RETURN in Payment Protocol Authors: Toby Padilla Comments-Summary: Unanimously Discourage for implementation Comments-URI: https://github.com/bitcoin/bips/wiki/Comments:BIP-0074 Status: Closed Type: Specification Assigned: 2016-01-29 License: PD Table of ContentsAbstractMotivationSpecificationRationaleCompatibilityCopyright Abstract This BIP alters the Payment Protocol to allow for zero value OP_RETURN outputs in serialized PaymentRequests. Motivation The Payment Protocol (defined in BIP70) gives merchants a way to build sophisticated transactions by serializing one or more outputs in the form of a PaymentRequest. The PaymentRequest is then served over http/https to a customer's wallet where the serialized transaction can be executed. While the Payment Protocol allows for any valid script in its outputs, it also ignores outputs with zero value. This means BIP70 implementations can encode an OP_RETURN scri...
123 - BIP Classification
BIP: 123 source Title: BIP Classification Authors: Eric Lombrozo Status: Deployed Type: Process Assigned: 2015-08-26 License: CC0-1.0 OR FSFAP Table of ContentsAbstractCopyrightMotivationSpecification1. Consensus LayerSoft ForksHard Forks2. Peer Services Layer3. API/RPC Layer4. Applications LayerClassification of existing BIPs 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 FSF 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 implementers a choice of whether to su...