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 0x8bc45647067ff6af4c5ba7fbb4948825ef79aecf8c1a19d7572c845ecebb1afd. 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/71659e8b-fa96-4273-b2f4-5f9a33cb8fe5.json and https://artists.proofprofile.net/proofs/artist/71659e8b-fa96-4273-b2f4-5f9a33cb8fe5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xb764e3e3191046fa038257a036557f45f6ff90802a603927bbd1728618e2ea52. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/USDY42217895.
El Señor Es Mi Luz y Mi Salvación (Salmo 26)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2ccfb776ade69a5268cb78f8f8425b0041edbcd66a620ecd5fe5d8b588aa71. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USDY42217898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1292c5097b40de9449be66765defe1694788b3219d1c2bee3fd53c7676ad83bb. 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/USDY42217899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe476dc547fa1a190951e43e0c22bb1b7b8f0ec6c2cba0599a825660396d5b5ee. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USDY42217900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792f6aa192bba352ff53b81ee5c74847d23161f8e8d6d6ea387512eb6b13a4f4. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/USDY42217901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efdc4c4743d6c1d2f651c8c9d1e9fab52ac154315a02766861bebf4cf9a83fe. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USDY42217902.
Vivir este momento (Dedicada a Mons. Antoni Vadell)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ad7b109399974ee000b499f320279015ac12a6dfd0f571ce415af52c7e16de. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USX9P2333450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432dde0d227b61fce0ff04addf967d269aecce0385ecdec6f202d1fac453ed61. 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/USX9P2333451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe2b105febd50f65331ea007a718a90affd1a1f7c9b443e42471590638efe59. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USX9P2333452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368e74a821c110b27fcb9691e309eaa91fae768c9792bd7378cd2beeffb9e187. 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/USX9P2333453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e392c596e304ddeb8070b29c310bcbc51dd48598743d9e867e7683cfe477c4e. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:43:54Z), 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/USX9P2333454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14580bdecb3fcfda13cfd4965437b6bef256e514e6043440db42010a8b57fcd3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USX9P2413129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279354e50092b4de5c100b4be930bbd51308ae99030a8482e69d49aa8ba2abba. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USX9P2413130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b9b770e3e47d426f60382021e93936844c1336ac4ad780b9a9974f03ecb2d0. Chain 2 (Bitcoin): anchored in block 958678 (2026-07-19T05:59:57Z), 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/USX9P2413131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7396e561ba031b918783e1be9e83cad20b7945ebda14ace36f692b2e2c6532f5. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/USX9P2413132.