Bruno may refer to: People and fictional characters Bruno (name), including lists of people and fictional characters with either the given name or surname Bruno, Duke of Saxony (died 880) Bruno th
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 0x134e3228a9dee71daedf3247159cca9e55e70fb4a77a05d326f6bdf6857319ea. Chain 2 (Bitcoin): anchored in block 953939 (2026-06-16T11:40:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2090d1d1-c2e6-449c-b68b-ede4edb60eb7.json and https://artists.proofprofile.net/proofs/artist/2090d1d1-c2e6-449c-b68b-ede4edb60eb7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).