158 - Compact Block Filters for Light Clients
BIP: 158 Layer: Peer Services Title: Compact Block Filters for Light Clients Author: Olaoluwa Osuntokun Alex Akselrod Comments-Summary: None yet Comments-URI: https://github.com/bitcoin/bips/wiki/Comments:BIP-0158 Status: Draft Type: Standards Track Created: 2017-05-24 License: CC0-1.0 == Abstract == This BIP describes a structure for compact filters on block data, for use in the BIP 157 light client protocolbip-0157.mediawiki. The filter construction proposed is an alternative to Bloom filters, as used in BIP 37, that minimizes filter size by using Golomb-Rice coding for compression. This document specifies one initial filter type based on this construction that enables basic wallets and applications with more advanced smart contracts. == Motivation == [[bip-0157.mediawiki|BIP 157]] defines a light client protocol based on deterministic filters of block content. The filters are designed to minimize the expected bandwidth consumed by light clients, downlo...
157 - Client Side Block Filtering
BIP: 157 Layer: Peer Services Title: Client Side Block Filtering Author: Olaoluwa Osuntokun Alex Akselrod Jim Posen Comments-Summary: None yet Comments-URI: https://github.com/bitcoin/bips/wiki/Comments:BIP-0157 Status: Draft Type: Standards Track Created: 2017-05-24 License: CC0-1.0 == Abstract == This BIP describes a new light client protocol in Bitcoin that improves upon currently available options. The standard light client protocol in use today, defined in BIP 37https://github.com/bitcoin/bips/blob/master/bip-0037.mediawiki, has known flaws that weaken the security and privacy of clients and allow denial-of-service attack vectors on full nodeshttps://lists.linuxfoundation.org/pipermail/bitcoin-dev/2016-May/012636.html. The new protocol overcomes these issues by allowing light clients to obtain compact probabilistic filters of block content from full nodes and download full blocks if the filter matches relevant data. New P2P messages empow...