Broken Dog is an English, London-based experimental rock band, started in 1994. Broken Dog were formed by Martine Roberts and Clive Painter in London in the summer of 1994 and disbanded in 2004 follo
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b1a76be7ecc850ff8af4b1ebea80fdb5e7a19df4e17e3afab8946e402bce0a. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/193d3de0-bb01-4ceb-9c71-ac3a309787c6.json and https://artists.proofprofile.net/proofs/artist/193d3de0-bb01-4ceb-9c71-ac3a309787c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).