WBR may refer to: Warner Bros. Records, an American record label WBR Sessions, an EP recorded by Guster The Welsh Boat Race, an annual rowing race River Tawe or River Taff in South Wales also kno
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 0xf9a3ef939139d347583741e7347992852e760f3a500ef8991ac9f7c92c26d925. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ea9dbb8-8ec5-4b67-8ef4-be0e2a218e44.json and https://artists.proofprofile.net/proofs/artist/1ea9dbb8-8ec5-4b67-8ef4-be0e2a218e44.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).