1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ee92b0164bf83a5e66e8b10136d037c2f2ee3e1f554883ea6ab29dc2d62092. 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/b7971711-88ca-41f6-94d5-9ab437fce791.json and https://artists.proofprofile.net/proofs/artist/b7971711-88ca-41f6-94d5-9ab437fce791.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Il ballo della casalinga (Balli di gruppo)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcb230f3b8df935f19330731648a1b39ca3d8e0a1229fca08bb2219544fd8aa. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITP521000426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24eeb78719918750503517972b91eab30a0a437a97c39bee81b18fe7d14202f. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITP521000425.
I Don't Like the Midi File (Strumentale)
Carnevale di Sciacca "O sultanu nammurate" (Remix)
Nanà Carnevale di Sciacca Collection, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e9e4b26a1c8eaddd215316bf4811b830d52492cc66b3f6082339de0273536b. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2188322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c046cf5d44b3e1f80bbe2b0364b4cc4d55de411ba70d5734f9d1723ac79bd02. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2188324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf554343c394e285035cc52ce68abd660f9995b62fc2bebbc41b99eb2c7b0de8d. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2153868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c3bb2aba869287ad9755030975644b523e5cf29f9447e510744665da618214. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2188320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1ee7f8804bde2375c656eea9b31a8836471bcd5df69d5f837ec609021c04e1. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2188334.
Nanà Carnevale di Sciacca Collection Vol.9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3ebfb8c1fe8dbe3ced3b3946f2a2879009d046e727b531136e9324b1ee6c4c. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2183757.
Nanà Carnevale di Sciacca Collection Vol.8
Nanà Carnevale di Sciacca Collection Vol.7
Nanà Carnevale di Sciacca Collection Vol.6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5e2fd1695d05c9dcee983856ec304141ae9f798f01451cc0ea93ca987d9adb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2121199.
Nanà Carnevale di Sciacca Collection Vol.5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe195b1ff23d5dddb135afaf8f9645d6f4a624370fa40382326dca49f4f06a910. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWR2124858.
Nanà Carnevale di Sciacca Collection Vol.4
Nanà Carnevale di Sciacca Collection Vol.3
Nanà Carnevale di Sciacca Collection Vol.11
Nanà Carnevale di Sciacca Collection Vol.10
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599c8880a9e61a7cab2dddb0a8865012a1e4c7837232601dad7e8bed0ae8f333. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2187228.
Nanà Carnevale di Sciacca Collection Vol.1
Carnevale di Sciacca Remix, Vol. 4 (Version Remix)
Carnevale di Sciacca Remix, Vol. 3 (Version Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36c480d20ad113db6c07bb1105c5de1cec3adc05949f0b90b3ec5aed87d0939. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2157715.
Carnevale di Sciacca Remix, Vol. 2 (Version Remix)
Carnevale di Sciacca Remix, Vol. 1 (Version Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46694e7ccde02d62c442bd043ae03c0a86a042174cfc23110a205fe951f4e213. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2492912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94cbb450a8784e96b15d2c60936fb2ce55fb1d7679276e87c58dbdfac5ba5f8. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITGIS2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59fd2c47d882c6a3819f2a56e60d3345a04126d79c4cfc2ccf994563956fc3a0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITGIS2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ac02f51eacda805f95290a8b42c83e158991428b014e36abcf49e948c11704. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITGIS2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7d9b584195a055771cfb869c4fe11a1f3ad09863111fede9d2ce69b5a31fe9. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITGIS2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb706df2b317151bacf7a5a160d5c9fc64505b43824631ba36690812c60047192. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYZ2562540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5f1d3acde26a3b64edcdc1ee15b392b970fa25ba76b77c371bfbd621752433. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITGIS2400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91d8efa5564a60f9ae2c8af6b4b5261f8732c427b63c690cfb6a06ccf6091a6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITGIS2400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5f1d3acde26a3b64edcdc1ee15b392b970fa25ba76b77c371bfbd621752433. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITGIS2400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c594d7daa969ed6d851f8ab9d86f12726a14c469ca20baaa4757c1561014ec. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITGIS2400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708c0386ebd2ba05c8038316c311c82d153df19132689b477fc771fbc495b271. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITGIS2400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcae7fb9bb5e0b5631196860ca953191d4393e16edf8f3d873201f7658cafaf. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITGIS2400124.