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 0xba3cc089fba0f3e32796e8a17e0d6d8d78e960fba34c2400b5a43e4059181da3. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5e96ca0-6c08-43a7-a3c5-aed44a61020e.json and https://artists.proofprofile.net/proofs/artist/c5e96ca0-6c08-43a7-a3c5-aed44a61020e.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 0x533e5198cb2f05ad3f31c1ab8e6cebe6b2e77967ca090b0fe9828cb7baf24b3c. 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/USA2P2222783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83eea5766f853d15dbc55f848b60cddf331a01b6ede33f3529b3a8fc1a225958. 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/USA2P2226501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e496c6e5863070fc242183a3b1f261efd9934b3128dcd19da9618d6bd94c92. 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/QZNJV2295412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434c1bff3ebbd61682944edbfa6012c3a2fc193b3faba5c3ac5daf29fb229659. 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/USA2P2243762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efd6c1c8675d4c979b2a07ee78da803dab6dafaced7cfc9be424551ac0e338c. 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/QZNJX2248696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd1309e0b971ce2836135ae0552c0baba0297fd4e25f3fc37b91cfd5981909c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNJX2248697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1601501717626c207b44b79e299148243071f21519a5431822fb9fc725ce93. 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/QZNJX2248698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83eea5766f853d15dbc55f848b60cddf331a01b6ede33f3529b3a8fc1a225958. 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/USA2P2226501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814833c004e06f163e5f7fd207cc4bb25d1962561a93ba123b782d35b527fc30. 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/QMBZ92397032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1da4941ba576e901cfb895990ec9cdb7b5d3e90e2bcf8cdd2dd682dca73168. 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/QMBZ92397034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7993d95c7e165468f2a2019de616b7d22ef7c6ac79119aa8121807366a7788. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QMBZ92397035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7379aa2c42e3dc318553227de46cc27f78e9566337381461d814efc3f5cf1fc2. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QMBZ92397036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0341c5d50b3c5546e3e0d81f8a2e6b350a5e0041b4ccc0579307258561ed88f8. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QMBZ92397037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23b8cfff240f53573169b7a483fd22840d069e0bb5db32fb61a0cb4e7f0c2cb. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QMBZ92397038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be96132067fb117c58a5e0ce9ee143e7154d03db47b229c35f7964c09c9c131. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/QMBZ92397039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf270593412080a982fc07977ea148054c6841dc6594e13a123c104c19702ff83. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QMBZ92397040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346505f424671a54e16a3740b5724296dc81b9541d8a3bd02f2cceb9c2e25da4. 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/QMBZ92397041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7a7c8f1ef8a665c041d096c275031a65dd4161364b97d103ce89359719ce88. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMBZ92397042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc77c1fb9b62483ce824a5bacc7074b473395580874df53e30d50d3298ae69eb. 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/QMBZ92397043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4d31983b9d56b4d08f9ed5f263b984b6f1247a2d4b517420e96b6103218285. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMBZ92397044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd73a835773e1af33653a4e9b944eeeff4e37674998223a96c4631a28556e8c. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QMBZ92397045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f69067005af25f6b9042f4c833c3bc4f7ea8727a479930b172c668a5b08676c. 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/QMBZ92397046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a05b4aa2473b6190b01ae4af1d10e3aebb38ad470ddecc581d768999516c1f. 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/QM4TW2326182.
Epic Agressive Drill Instrumental - Female Choir Synth x Electric Guitar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f00c393235d23dbc06fec7e6f4727c3adc38bf7fa1367c40cf160184064f157. 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/QZTBA2291169.