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 0x81a77d0483df81c1d5d8277a4328b2376f4cfb5fd0d712a17da9118bc625b6da. Chain 2 (Bitcoin): anchored in block 953903 (2026-06-16T07:05:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/151d0570-894d-49b8-9045-22e825ce9a6f.json and https://artists.proofprofile.net/proofs/artist/151d0570-894d-49b8-9045-22e825ce9a6f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Martin Lutz: There Is a Spell upon Your Lips
Stabat Mater: Stabat Mater dolorosa - Cuius animam gementem
Stabat Mater: O quam tristis et afflicta
Stabat Mater: Quis est homo qui non fleret - Quis non posset contristari
Stabat Mater: Tui nati vulnerati - Fac me vere tecum flere
Stabat Mater: Fac ut portem Christi mortem
2 Love Songs: No. 1, Those Lips That Love's Own Hand Did Make
2 Love Songs: No. 2, How Oft When Thou, My Music, Music Play'st
Stabat Mater dolorosa - Cuius animam gementem
2 Love Songs: No. 1. Those Lips that Love's own Hand did Make
2 Love Songs: No. 2. How oft when Thou, Music, my Music, play'st
Two Love Songs: Those Lips That Love's Own Hand Did Make
Two Love Songs: How Oft When Thou, My Music, Music, Play'st