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 0x8dc99221558ba644c206f1679e7668b18ed338e799c31d9eecf27ee621f77c0d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c57df62-7eee-4bba-91c7-6acd02b4889e.json and https://artists.proofprofile.net/proofs/artist/6c57df62-7eee-4bba-91c7-6acd02b4889e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xba1c4cec8f932cb2fe677703f403bd8ada0bf3a9d3522bc1fffb7aad1b2a8d17","isrc":"ITNIE2300028","name":"Non Stiamo Insieme","registered_at":"2026-06-24T06:28:52Z","spotify_id":"0DaKrGG5UHSl8KYBIFySka","type":"track"}
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 0xba1c4cec8f932cb2fe677703f403bd8ada0bf3a9d3522bc1fffb7aad1b2a8d17. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0DaKrGG5UHSl8KYBIFySka.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/0DaKrGG5UHSl8KYBIFySka.
{"copyright_id":"0x2e77667ddb6779ffc67486748ec28aa4e3a2194ec8bd80db20e2672517b897a3","isrc":"ITNIE2300036","name":"Nelluccio Story","registered_at":"2026-06-24T14:02:16Z","spotify_id":"3FfbUVZylkWAnTcFalTAFm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e77667ddb6779ffc67486748ec28aa4e3a2194ec8bd80db20e2672517b897a3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3FfbUVZylkWAnTcFalTAFm.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/3FfbUVZylkWAnTcFalTAFm.
{"copyright_id":"0xf71604c522eadf2da48d0865af5741d4e81e0ad2b64f19251b938b2427d1719b","isrc":"ITNIE2300026","name":"Carmelo Freestyle","registered_at":"2026-06-22T19:56:44Z","spotify_id":"1Ql0ADKWupDLhAxx1AXx9m","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71604c522eadf2da48d0865af5741d4e81e0ad2b64f19251b938b2427d1719b. 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/1Ql0ADKWupDLhAxx1AXx9m.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/1Ql0ADKWupDLhAxx1AXx9m.
{"copyright_id":"0x649979b3c7d1ea657260ae863fa6ff9c01011bce44fcbe86d0ecb8f37d011406","isrc":"ITNIE2300027","name":"Un Amaro o Ti Sparo","registered_at":"2026-06-23T05:54:17Z","spotify_id":"0YRSj1PfJ0umKduKwpzmuE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649979b3c7d1ea657260ae863fa6ff9c01011bce44fcbe86d0ecb8f37d011406. 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/0YRSj1PfJ0umKduKwpzmuE.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/0YRSj1PfJ0umKduKwpzmuE.
{"copyright_id":"0xba1c4cec8f932cb2fe677703f403bd8ada0bf3a9d3522bc1fffb7aad1b2a8d17","isrc":"ITNIE2300028","name":"Non Stiamo Insieme","registered_at":"2026-06-24T06:28:52Z","spotify_id":"2HrRHItFmIIWBXVIEpM0no","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1c4cec8f932cb2fe677703f403bd8ada0bf3a9d3522bc1fffb7aad1b2a8d17. 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/2HrRHItFmIIWBXVIEpM0no.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/2HrRHItFmIIWBXVIEpM0no.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa85fe9ea6ced52e9830d0ae28b6bb9e431c23355d07b28fb9ab342ad3b471ef. 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/7s5smxIquSWpRf7GiQq9Di.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/7s5smxIquSWpRf7GiQq9Di.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f5e11ac7712237ffa7f9f622461db044d409b7606c686ab209c5509009739f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4Fz8vHNJxERl67mR1VELoH.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/4Fz8vHNJxERl67mR1VELoH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdec4b3305e217288d5d1735209aedd58bd9910598ee85680bd375e7b4d6c1b6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7pgrSRltkx0L5Xo4qNeW7M.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/7pgrSRltkx0L5Xo4qNeW7M.
{"copyright_id":"0x45ee5702f58dec94917a99b9158d7b27b37fabe1dfcf4a41dc9f099f04dbbea9","isrc":"ITNIE2300032","name":"Massimo Troisi Freestyle 3","registered_at":"2026-06-23T05:45:17Z","spotify_id":"2RpGXRueikabnnvh3RqKbq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ee5702f58dec94917a99b9158d7b27b37fabe1dfcf4a41dc9f099f04dbbea9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2RpGXRueikabnnvh3RqKbq.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/2RpGXRueikabnnvh3RqKbq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ce5d0ff03e5887c7255802c3c591ee3899a84432614f0f59245b267e47e1d1. 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/3SvVOsux1XqzOR2XALAwj6.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/3SvVOsux1XqzOR2XALAwj6.
{"copyright_id":"0xafb365b4b9cd49a7007a5bd366b56b52982ab06344a35555bd76d5afb2017e36","isrc":"ITNIE2300034","name":"Night Session (Accordi Notturni)","registered_at":"2026-06-23T05:53:08Z","spotify_id":"7gXr2Op13tV9ITfbEtbwQL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb365b4b9cd49a7007a5bd366b56b52982ab06344a35555bd76d5afb2017e36. 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/7gXr2Op13tV9ITfbEtbwQL.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/7gXr2Op13tV9ITfbEtbwQL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa0dcc3dd3af49f7d68dbdaa9926099ca2e22be3371225de0cf7cff4244beb4. 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/6Den0iIosbjMOSQFfVqpDT.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/6Den0iIosbjMOSQFfVqpDT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e77667ddb6779ffc67486748ec28aa4e3a2194ec8bd80db20e2672517b897a3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/58LPKBkEd6DLKEQqiPlV5C.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/58LPKBkEd6DLKEQqiPlV5C.
{"copyright_id":"0x5c203ff26ea8bbd5b07678cfbabb85050b8d4d8bb308d9b9f735733ef9c4496d","isrc":"ITNIE2400003","name":"La Bamba","registered_at":"2026-06-10T17:53:37Z","spotify_id":"2e7z0TwXjgHaj4kOMjcjTB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c203ff26ea8bbd5b07678cfbabb85050b8d4d8bb308d9b9f735733ef9c4496d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2e7z0TwXjgHaj4kOMjcjTB.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/2e7z0TwXjgHaj4kOMjcjTB.
Nun M Piac RMX - feat. Guè, Sacky, Side Baby, Papa V
{"copyright_id":"0xaaef908a70d8e8a8e56294595276ace08fef7760cebb138a7b0a1fd2297624a8","isrc":"ITNIE2400014","name":"Nun M Piac RMX - feat. Guè, Sacky, Side Baby, Papa V","registered_at":"2026-06-08T20:28:29Z","spotify_id":"2sBZiWiI48D1ZSU3iwg2vT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaef908a70d8e8a8e56294595276ace08fef7760cebb138a7b0a1fd2297624a8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2sBZiWiI48D1ZSU3iwg2vT.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/2sBZiWiI48D1ZSU3iwg2vT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c29440794e5242801a5c53aa8074753e46d2168942ef8eb6574b4012f793b8. 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/3SFc9FSMLyco7BJBErUKpZ.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/3SFc9FSMLyco7BJBErUKpZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1120b77d207f0609a6f79821b354d213c2e2e9b1d6da97991febcef1c983537a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1cVeI9J4VRhhpD2USuknIS.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/1cVeI9J4VRhhpD2USuknIS.