thumb|American singer Mariah Carey is often described as an "ultimate diva" by the media for her musical ability as well as her demanding persona. Diva (, ), the Latin word for a goddess, has often be
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 0xb22e9bb5b2548057d5d9aafbc024c2f486b5bcc1347420c62a979c7bdbbb8ade. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08eebce6-8a32-4268-b9a2-df023b24efdd.json and https://artists.proofprofile.net/proofs/artist/08eebce6-8a32-4268-b9a2-df023b24efdd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).