thumb|A coin, around 200 BCE, of the Yaudheyas with depiction of Kumāra Karttikeya Kumar (; ) is a title, given name, middle name, or a family name found in the Indian subcontinent, mainly in, but no
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 0xbcc2bac295779474c792c6fc0c30afa9ded5f20a5d6a1bee8472f05467e94b5c. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4335b09-d5eb-4463-9c35-3501c376cd83.json and https://artists.proofprofile.net/proofs/artist/a4335b09-d5eb-4463-9c35-3501c376cd83.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).