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• 9 Version bits with timeout and delay
• 11 M-of-N Standard Transactions
• 13 Address Format for pay-to-script-hash
• 14 Protocol Version and User Agent
• 16 Pay to Script Hash
• 21 URI Scheme
• 22 getblocktemplate - Fundamentals
• 23 getblocktemplate - Pooled Mining
• 30 Duplicate transactions
• 31 Pong message
• 32 Hierarchical Deterministic Wallets
• 34 Block v2, Height in Coinbase
• 35 mempool message
• 37 Connection Bloom filtering
• 42 A finite monetary supply for Bitcoin
• 43 Purpose Field for Deterministic Wallets
• 49 Derivation scheme for P2WPKH-nested-in-P2SH based accounts
• 50 March 2013 Chain Fork Post-Mortem
• 61 Reject P2P message
• 65 OP_CHECKLOCKTIMEVERIFY
• 66 Strict DER signatures
• 68 Relative lock-time using consensus-enforced sequence numbers
• 70 Payment Protocol
• 71 Payment Protocol MIME types
• 72 bitcoin: uri extensions for Payment Protocol
• 73 Use Accept header for response type negotiation with Payment Request URLs
• 75 Out of Band Address Exchange using Payment Protocol Encryption
• 90 Buried Deployments
• 91 Reduced threshold Segwit MASF
• 112 CHECKSEQUENCEVERIFY
• 113 Median time-past as endpoint for lock-time calculations
• 137 Signatures of Messages using Private Keys
• 141 Segregated Witness (Consensus layer)
• 143 Transaction Signature Verification for Version 0 Witness Program
• 144 Segregated Witness (Peer Services)
• 145 getblocktemplate Updates for Segregated Witness
• 147 Dealing with dummy stack element malleability
• 148 Mandatory activation of segwit deployment
• 152 Compact Block Relay
• 173 Base32 address format for native v0-16 witness outputs
• 174 Partially Signed Bitcoin Transaction Format