Big B may refer to: Amitabh Bachchan or Big B, Indian actor Big B Drugs, a defunct American drugstore chain Big B (film), a 2007 Malayalam film Big B (rapper), American rapper A character in 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecb4c5efdb5bf4598d1b8d03711a8afe8f20f48360f7688e34acf9acc1fffae. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d2c9b01-cff0-4081-9828-e896e66fda5e.json and https://artists.proofprofile.net/proofs/artist/5d2c9b01-cff0-4081-9828-e896e66fda5e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).