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 0x32c44344b6f7e713d0316c1bd272a09ab4e2ff2732a128174841e82c40817b5e. 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/3dd4ee42-f708-47df-b752-66b7ab257506.json and https://artists.proofprofile.net/proofs/artist/3dd4ee42-f708-47df-b752-66b7ab257506.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 0x115cb2772d365797b7fb3864c3f5f6e2ee782e2859f50863daddc80c172b4524. 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/QZNJY2259107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2cae3914f62516aea8b29a9bcb131fefb06ccc27f87c491e930f141a180287. 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/QZNJY2259110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e7f3fc659fe246981b09bcbcde7b73bedfb30fc2e292df70aa1ec57ca65394. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZNJY2259113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e46475b91a8d77a26b7541a9150ff2621c9302ccf346b2dd27787b19efe7aa. 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/QZNJY2259114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aebda5897e51bb712457ee71eff4decc1bf869678426c367faedda1772eea41. 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/QZNJY2259096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefdb447d1a45a8b4392ec4f035c54e52dd4479e7e23edd036f62110045c1ce7. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZNJY2259085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2b11e2230e2bf8a8f16f765c489db913c25c7e089cb588b44feb806df27c01. 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/QZNJY2259231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85094f810e56351f1009671e21c52ffcd8683c2b4aad3c56a1be2285804a06b. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/BCTMM2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8e867bb5634e374a5edaa5d0f20f80597c262f91c2db047e52fc96d1e9dee8. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/BCTMM2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b951263bfe7ea3ea6c9474ec909ccd81a1b10cb6458bc890f77f9474c4714c. 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/BCTMM2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb004854350e61a570cd5d029e4fd43a0cfcaf1a3d966fbc10a866816bae1319. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BCTMM2100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29477d4c4258fcd1367d5ba33a197d6a588b07225b22bffafa4aeabbd41f865c. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/BCTMM2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029c5f77bd5a37c07a05be5cf3dcb16e22128857d05b673e9639acf55afdff88. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/BCTMM2100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01e80fda1e8245bdc1edb17a3c94b6045483b823031604a88bac0337c4059bc. 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/QZNJY2259264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05231a9a37854d51b22a023894b07bdda3ddbedfd640045468b7e0607dbc1c06. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZNJY2259145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e75fae84bed86d840d625817a647222dcd7ac75167aef3e3fea1784a0071a50. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZW9L2214531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f935ed2a988d7785cd9c1e403772874f191f2a405a9f0e522f75d401510c37f. 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/QZW9L2214533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05988c754b60ccdcb6ea9dee7b5aaf3aecadf1b3d408d4f9d54d21a866206eef. 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/QZW9L2214535.
Te Vivo / Quando a Chuva Passar / No Dia do Seu Casamento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62458a16743c355e8c72ecefffe2141f1a60c7660121b1beb4308040a0a6d71d. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZW9L2446943.
No Dia do Seu Casamento / Show Completo / A Luz de Velas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e65b615008ad5745f2e68eb1eb665fbba28be2e8eccd2b136f02907080155f. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/QZNJZ2503815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3658b8949b5f146c4809c0898d0853258d104a4739b4a0db036903fbb7bae8c9. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZNJZ2534130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2e54256c68b9f370ff74b30b22cd271119fc9ba7358cf6f46680722c346809. 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/QZTPX2503774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e65b615008ad5745f2e68eb1eb665fbba28be2e8eccd2b136f02907080155f. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QZNJZ2503815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50c3e7480d399a389d98c7965f76e7e21767e74a9ee048e1fbe8f27d249ec7d. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/BX0NM2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096f479c732888e0502fa589a6a41f9a8cd532e1ee0811009baa64fe4eb31f99. 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/BX0NM2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747b317676209e0112ba736c16820585c844ad24bc3109eb493cee4d75a16aeb. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BX0NM2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8e19525367bf4c990899828bc629124137444ab06bf0d0aa96b6ddf63f08d2. 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/BX0NM2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa313e15f6eec9a52a1968a31d1e8f8a8ea33a185e54602802cc271c1bbbf0ba9. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZNJZ2579216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44746f25fb03b68fa839a047c39b47174d82c28eab488ec4e7c08766b5ac21e5. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZNJZ2579218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21135ea99b8207c30ea7e4924cf43a1726f9232ff91490c218ecec5a76126684. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/QZNJZ2579219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa8f83289d4748f1723a45d61d42584c85d2676030a738449667f4117d2b31d. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZTPX2503773.