{"document_id":"BLC-STUDY-1706","slug":"bip-14","title":"Protocol Version and User Agent","authors":"Amir Taaki","year":2011,"date_label":"2011","publisher":"Amir Taaki","paper_type":"Design paper","category":"Data and agents","topics":["Data and agents"],"source_url":"https://github.com/bitcoin/bips/blob/master/bip-0014.mediawiki","source_label":"BIP 14","legacy_pdf_path":null,"sha256":null,"sha256_note":"No hash is published. This build does not store those PDF bytes, so a checksum would be invented. Where a legacy path exists, it points at the Internet Archive copy of the old library.","version":"Source cited by the 2011 study. The study is the reading. This page does not add a second essay.","doi":null,"rights_status":"Official external source only","source_status":"Official source","use_status":"Metadata and commentary only. The reading is the study page.","licence":null,"licence_label":"No licence recorded. Rights status under review.","full_text":null,"full_text_reason":"Full text is not published on this page. Public availability is not a licence to republish a document. Blockchain Lab has not recorded a licence that permits an HTML transcription, a training set, or a retrieval corpus of the paper. Text on this page is Blockchain Lab's own wording, or a pointer to a study that is also Blockchain Lab's wording.","repository":"https://github.com/bitcoin/bips","editorial_line":"A desk note on BIP 14 (Protocol Version and User Agent). The file's status is Deployed. The note records the text. It does not measure who runs it.","canonical_url":"https://blockchainlab.com/whitepaper/bip-14","record_url":"https://blockchainlab.com/research/corpus/papers/bip-14","study_url":"https://blockchainlab.com/whitepaper/bip-14","last_reviewed":"2026-10-01","last_checked":"2026-10-01","relationships":[{"rel":"Canonical reading","label":"BIP 14 study","href":"/whitepaper/bip-14"},{"rel":"Related paper","label":"Chainlink","href":"/whitepaper/chainlink"},{"rel":"Related paper","label":"The Graph","href":"/whitepaper/the-graph"},{"rel":"Related paper","label":"UMA","href":"/whitepaper/uma"}]}