Hadja is a given name. Notable people with the name include: Hadja Idrissa Bah (born 1999), Guinean activist Hadja Nima Bah (born 1927, or 1937), Guinean writer Hadja Cissé (born 1991), Senegalese ha
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 0x5fe583b2c878393f8214b218a567586d3c589bb0a5be832a147b93c44251247d. Chain 2 (Bitcoin): anchored in block 953970 (2026-06-16T16:09:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29684bde-8750-41f8-9c8d-1ac7be6d399d.json and https://artists.proofprofile.net/proofs/artist/29684bde-8750-41f8-9c8d-1ac7be6d399d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).