BBD may stand for: Finance Banco Bradesco, by NYSE ticker symbol Bombardier Inc., by Toronto Stock Exchange symbol Barbadian dollar, by ISO 4217 code Music Bell Biv DeVoe, an R&B group BBD (album
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 0x8e08a8b8c8d6e9144571e4db4d131e5407ee25336ae52a36cfaaa1f90557bbd3. Chain 2 (Bitcoin): anchored in block 953871 (2026-06-16T01:46:03Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07a389d3-9e97-4786-a9c0-c582dc633c9b.json and https://artists.proofprofile.net/proofs/artist/07a389d3-9e97-4786-a9c0-c582dc633c9b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).