1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x3d532c8f98cb4c1f962270f1fdf65a4054147d45cd9757a661b0eb87217be49b. 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/e718cfc7-c431-4ad9-a7b6-11de1cb91cfb.json and https://artists.proofprofile.net/proofs/artist/e718cfc7-c431-4ad9-a7b6-11de1cb91cfb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Magnificat secundi Toni: III. Versus III
Ricercar noni toni sopra le fughe, Io son ferito, hai lasso è vestiva i Colli
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Ricercar IX toni, sopra le fughe 'Io son ferito lasso' e 'Vestiva I coll.'
Big Gustav Leonhardt Box The Bach Guild Recordings 1952-1955
In the bleak midwinter - Winter Classics