Bitcoin BIP Reference Guides Articles

BIP 73 Payment URL Negotiation made simple. See what the proposal changes, its current status and what it means for Bitcoin users and operators.

BIP 70 Payment Protocol explained: understand PaymentRequest, Payment and PaymentACK messages, X.509 identity, refunds and legacy security risks.

BIP 60 fixed-length version messages explained: review the optional relay flag problem, proposed protocol 70002 change and safe parser testing.

BIP 38 encrypted private keys explained: understand 6P records, scrypt, EC-multiply mode, password risk, test vectors and safe recovery.

BIP 21 Bitcoin payment URIs explained: parse addresses, amounts and required parameters safely, understand replacement by BIP 321 and test wallet handling.

BIP 17 OP_CHECKHASHVERIFY explained as a closed P2SH alternative, including script hashing, activation risk and why Bitcoin adopted BIP 16.

BIP 15 Bitcoin aliases explained as a closed proposal for human-readable payment identities, including discovery, authentication and substitution risks.

BIP 12 OP_EVAL explained as a closed soft-fork proposal, including recursive script evaluation, security concerns and replacement by P2SH.

BIP 1 purpose and guidelines explained: review the original Bitcoin proposal process, document types, editor role and replacement by newer governance rules.

BIP 20 Bitcoin URI scheme explained as the closed predecessor to BIP 21, including payment links, amount encoding, compatibility and migration.