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 0x8cccaeab4b5c1c332f0a522eb75f4ebab232cc5c3ae193aa78aadc0be0790a79. 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/5610b2e9-bfe9-4d62-b97d-235440893e37.json and https://artists.proofprofile.net/proofs/artist/5610b2e9-bfe9-4d62-b97d-235440893e37.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 0xcaf29737556601fb9a564664fe84f73aa82eb1ff0d559d846d335f58458e2a6e. 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/ES5021300555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae4a0f6250a01fcc9211031bafb5c9d4486d3d439a97b27d747d2f9b83d154e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ES5021300556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94392432dceda4d581786b19fa7a667dd447726260af1373a2bebe8bc3d205fc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES5021300558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0be6f55cb9770898f5b8a2d98730620e2f5818fc1a3c51c6a878fa12d28b04b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ES5021300561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d794b301b15a27143f3446382086e6a353b52ce72c0c5ef8bafdf9a910bdca. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/ES5021300562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa133f335fd9a888a096729ce79fe2ca499946cd32ffc6dea5d208b116817d2ed. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/ES5021300564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3fd6d52a15e6513f80ad94d027ef203f5ce6d063a2c073a7e625c8c5679d04. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES5021300565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51055b39df10efd90addf3a5e0ea346581f5559991d0fc3c4f08e1f9b00a276. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/ES5021300572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fe9e82925c3cefed70d5f00a25010619e7a3f096002279212a82b6a1830729. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/ES5021300573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c65a7e11c340a490924e41d220d311a3017761926c3261a36ff10d192d60219. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/ES5021300578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708711e80532277d4d5c44d880e73e08c80125d7500c5a14641c05873c0555d7. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ES5021300575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d9119a1c96faf52a1a959e311d4e8b7cdd47446bba2b7d53446e6cf1d321b8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES5021300591.
Siglo XX - (American Pie) [Remasterizado]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591c338acdf82676c2e5e23d24b8d9c691f5075c56a2686a380ab5fc2140aa25. 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/ES5021300594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b29859c7c5f96d6fbbdeba5ef2bfe4992bae4879e5237b4e71af1224a4493e1. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/MXD781701141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a35c558065bcb4aa479b22a68dea126695a7619b0763e90a7b4c1db78f39ed. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/MXD781701146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50af9aa3566f8a74a411fe7af9035d75e0ca0197ca931e0a029ad5c605c38475. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/MXD781701148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54add0ef302499ba0e07e88cae535532ba8688d9e9346a46faf5dc287684aae2. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/MXD781701149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb408f7eb565cba82d812cda38d513f30374c5aff7780a3aa9afd851f4c6901a. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/MXD781701158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e3e45157717990e5037758abb861cd6622d4eb7c6877d7b46bd8d0bd92fc5b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/MXD781701164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cc4092cb082942ecc268eb96ef02c548839dc64825066b5655c36ab7b8b64e. 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/MXD781701165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3187fe6fd0aea1dcb02977c49bec32af75b873b4109a1635905a0408895d47ed. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/MXD781701195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e53957d8e01588098c3da193ec25d8f8f495dc819f723eb8c22ed6d162506c. 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/MXD781701197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0776a423124c0f18b25567e271fcc6aa11e105d99666cbc44635d3547fd42e80. 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/MXD781701178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b58986c6622a8f18e4c4305aeca401dc47ae4705ecdb21a95602dfe70c7726c. 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/MXD781701179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45415b49029ea2c1a81d2527ee11bc2e23b2446f8e46539bf0f63adbdfee4138. 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/MXD781701180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe510c6373c8cc8c7b71c485a9310bff7fe496d725206cb9033b4ab495d2331a9. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/MXD781701188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c81450244f5d523714038c767da10fed034ffc16ea7e2f54ff4d4851092e191. 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/QMFMF2545797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0a55812b2830d6caada1b40c806fb655bb693106124e7a2224f4f224a4f827. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES5021300569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea2820f82efdeafe87a75491b89fa2fd19a7c40ce77eeab70d8d6bb72b5d091. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ES5021300568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf811077670d8ca765cadb0c10af497a2abd5db1f3a52c381696489e11906e69. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MXF159300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb2b27ca719cfae20218d9bb8c4acffe8336eb4ce0df44bd22f95f32b87c6c7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MXF159300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8df8f28f0515d21e55d611a3a418ce4e91ffb1cbf94a1431805673059c65a3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM4TX1839372.