thumb|200x200px 200x200px|thumb|right|Baldi Olier in 2011 Baldi Olier (born 1953 in Romania) is a flamenco guitarist described by The Jerusalem Post as "Israel's undisputed king of flamenco". Refer
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 0x3da7cb68a5b74e2da0ca8233a36df200c66d3ad176dbf31deadfd77ddefb4cee. Chain 2 (Bitcoin): anchored in block 953999 (2026-06-16T20:20:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30b2cdf5-bfb5-496d-9880-9a42ec083c91.json and https://artists.proofprofile.net/proofs/artist/30b2cdf5-bfb5-496d-9880-9a42ec083c91.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.