thumbnail|A group of college-aged girls in the United States, 1973. thumb|Two Irish secondary school-aged girls at a picnic table Youth is the time of life when one is young. The word, youth, can also
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 0xa20d64e9b241e8d8e278387165d3a8a2d5b60dd45938c73821ed7337e86a60ac. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08739970-bfa3-4638-b177-8ff8632ecc34.json and https://artists.proofprofile.net/proofs/artist/08739970-bfa3-4638-b177-8ff8632ecc34.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.