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 0x48452ea539831007bd70357e287f1d8ae5bddc63666b2824ccdbd2a7205d0733. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11ddfd03-648c-4670-bfda-f1846c622d50.json and https://artists.proofprofile.net/proofs/artist/11ddfd03-648c-4670-bfda-f1846c622d50.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xa35413ed416da764fd4498bf031584507d8f3bf231d3408be9c2005af1acea01. 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/0mdZ0OwftwsDYxoEwJP9OS.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/0mdZ0OwftwsDYxoEwJP9OS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb3883f3bd20553d3ef723762f8af21ba239f5b113df21b9968fac2bee8e407. 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/7zB8Cy0cGmrXJ34ohF0A2X.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/7zB8Cy0cGmrXJ34ohF0A2X.
L'Ultima Spiaggia - Feat. Federico Zampaglione
{"copyright_id":"0x752cbdf1a1317018fdae0de470c66716f2d4fa7b3750cfdf08a5caf92234c86e","isrc":"ITB007770537","name":"Tutto il resto e' noia","registered_at":"2026-06-26T17:53:44Z","spotify_id":"6KHV3wyfgw7RJhewMdNWk2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752cbdf1a1317018fdae0de470c66716f2d4fa7b3750cfdf08a5caf92234c86e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6KHV3wyfgw7RJhewMdNWk2.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/6KHV3wyfgw7RJhewMdNWk2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50efdcc30b2fa9bdfde8dc3cca718b2eada03ff8fac3b00226a9a7f395b2d740. 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/2zuschtByHamfMdpNzpqBd.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/2zuschtByHamfMdpNzpqBd.
Secondo me, l'amore... (So' distrutto) - Live
L'ultima spiaggia (feat. Federico Zampaglione)
Il Meglio Di Franco Califano: Grandi Successi
Il Meglio di Franco Califano - Grandi Successi
Il meglio di Franco Califano (Grandi successi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b306f6d256e88726c429f69fae5513f7cf8f016edabf2c0bf8b4c0736b1b155. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1DTWj14oELU8k9Z13tifCf.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/1DTWj14oELU8k9Z13tifCf.
{"copyright_id":"0x752cbdf1a1317018fdae0de470c66716f2d4fa7b3750cfdf08a5caf92234c86e","isrc":"ITB007770537","name":"Tutto il resto e' noia","registered_at":"2026-06-26T17:53:44Z","spotify_id":"3r9BcVkcrKJHMT06xV4ASI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752cbdf1a1317018fdae0de470c66716f2d4fa7b3750cfdf08a5caf92234c86e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3r9BcVkcrKJHMT06xV4ASI.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/3r9BcVkcrKJHMT06xV4ASI.
Sarò Franco, Vol.2 (Canzoni inedite di Califano)