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 0x5a11d50941e0061961ace7096713d0eb46fd5367175ab526d3888c2969f67303. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa3ac317-ee87-4bc3-b5c4-45e0076f446f.json and https://artists.proofprofile.net/proofs/artist/aa3ac317-ee87-4bc3-b5c4-45e0076f446f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Canzoniere: A Tazza E Café/Comme Facette Mammeta
Medley/A Tazza E Cafe'/Comme Facette Mammeta
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df5e90dc40ace267593e2d8a43554d10371e69935bbe63a70a58f5eff148710. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5VrAohQBDHq2ftalSW1JYq.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5VrAohQBDHq2ftalSW1JYq.
La Nazionale della musica, una grande voce italiana Vol. 1
La Nazionale della musica, una grande voce italiana Vol. 2
Maria Nazionale, Voce di Napoli (Best Of)
Capo Verde terra d'amore, Vol. 6 (Canzoni di Cesaria Evora, Teofilo Chantre e Nancy Vieira in Italiano)