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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33aea8e7a2299c9a80d654fd0ee0c00dd2811dfe87d2891d4422d27ddf7fd6e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f30d33f4-4e45-4d26-9d60-be16d7a20204.json and https://artists.proofprofile.net/proofs/artist/f30d33f4-4e45-4d26-9d60-be16d7a20204.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1401253fc09a411e7d2ea2558ec367250928f6592eaaf9e34fe028a28711f6b2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/VED049700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8de42413c35395c6515cb21334d881661a23ab4f7a8f72c799487a814057491. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/VEDO49800177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222cf38c95a567da9d6b9f0e260ee3be0c4a7f05c5c751a1bd266e1a919d844d. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:12:31Z), 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/USHM92088436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a31e2a141a114737ad2a1050962101248a97756bc6cd6a493f50c618fc2f7f5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USHM92088438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b49307338e655ce7b1ed14dead4eb94d26947999710be7a0fdb0df8352d5cc3. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USHM92088442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63734e1d376884e7ed8dd0781f2eb7225da80c35371055ef3c18bc47ebfae9c9. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/ES71G1949591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cca1fc9275ce9f44acea2859b4d2739c66af274158e01b513806ad818c61be0. 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/ES71G1949597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4a94959734fd4dc23deba3a54506a4080a4adab4ffa2cda1796191cbba7757. 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/FR2X42272748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5003ff5137d6e4d93632b8819925c05d459c24ad60769843103ebaba7d88b27. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/FR2X42272749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db3aabf67c601ef3a61127a204768d53dff1afba2293beec08f4d1a89e310ff. 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/TCAEW2049325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad6b5cf023d1c7ed51b93abc6a42cea36b88fd724ef5c4dd0be2c59f8a117ff. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAEX2051377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49344f8ff099fdbde072f5d8f5b3c424d8760aee7cfc0708a772635ff9f88c2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRX872009717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a370a5ab133c1fd62f279a52f7d11b748bfde1ccbe410f36655ef0c18755ebc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:01:55Z), 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/TCAFO2130731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411b69db054b5842baeff1f3763ae1f3355ed34780539bd67ba3569c3590388d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAFO2130734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831aa952b5a1a2217dbdf7a112736a34d68b13acc66490bf3fb42ecad764ecee. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAFO2130753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a9e5f3804c2de929ca409524fbcc5d3719da413f55166a2e1b83a4b40c0291. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAFO2130766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4392e8886246eb2fea7bf2cce24dfb8261ac82f786e55bee3985ffa8014d8e. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:06:34Z), 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/TCAFO2130782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef451a945d9bae4b981d26d3e0228dd3de707fdff52091d6ff6d7be19ff0bb0. 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/QZHNA2299435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34b846129f2edeb4fa87146b9e6ffab436696281c5fc50d8bf53cea20c96f0c. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAFO2130815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0f771e4bafd07a105619c3cca1fb8ab67e4fe36b5ac9eca4c36f53512ae25d. 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/QZHNA2299436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d9dee573e8906e64f8c63366563373e78eadcbe0fd1fa640918e8550078046. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TCAFO2130852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7974a5fa76e06168cd5752dd3d174f8a4d486da956331b58ecb5f0cf83f2a72. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZW9M2277305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e704134bea8c72b8ec6b42d5c4361695848a1b5a0e30f191860657e2076952. 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/VED049400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5c7ffa9588ac2c2b7de79ad135c17c1c225bd18036734aef42e021e03e3482. 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/QM6MZ1899189.
De Guayabo en Guayabo / Alcarabán Compañero / Vestida de Garza Blanca / Aquel / Indio / Adiós Barrancas de Arauca / Laguna Vieja / Como No Voy a Decirlo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95417caf8281116d0fd53982042f2283ea177d7aa03c8888aca6ca0d493c385. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6MZ1899553.
Mar de la Virgen Bonita / Un Caminante / Madrugada en el Mar / Pueblos Tristes / Novia del Lago
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d9f5306e4d20178ae0bd047333ae3f38356b9694c12e47dd155e86150c1d00. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6MZ1899555.
Fiesta en Elorza / a Quien No Le Va a Gustar / Una Casita Bella / Seis Numerao / Gavilán Colorao / Pajarillo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f480ab53bdc6a453bbad64f32528b944bb0e4f6b574be29116d655f4ea02c2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6MZ1899558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798da8220a74b0dd3234838a296e38a5a1d1147d4cd05bc7acef1c2149f761de. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US2BR9701439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988ffb3ac1ad7de442ba1f1a155466cbcbff3a3fb339be49cef80159ce72bc97. 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/SE5BU2222082.
Los Éxitos de Lenin Pulgar y Amor y Gaita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1431a06ce21aca7d0a31abbfc8bf07269d4abf07141184e3ea1b6107262017b. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/USHM81831836.
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 0x05a101f329ad6cfb08abd420f297e5d1f8237c3b00837bcaa5ee4f045171553b. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USA561068408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f722a6eb3be1d760467fac3b6bfa3643e4eec288b96e90cb72c81c8bf4b531. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/US2BR9701441.