thumb|Page from A Book of Ayres, 1601 Philip Rosseter (1568 – 5 May 1623) was an English composer and musician, as well as a theatrical manager. His family seems to have been from Somerset or Lincolns
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 0x2aba9ebde3fc13924fa95c4054ab27f277c124007c298672239e1e170197f789. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e75e7524-80d5-4b07-bd10-ccc7c96fed3d.json and https://artists.proofprofile.net/proofs/artist/e75e7524-80d5-4b07-bd10-ccc7c96fed3d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
When Laura Smiles - Lute Solos And Songs From Elizabethan England