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 0x9f8cd90d2652b8dd53538a9a4480bd7d8070e3cdc3f0bb6d268b3340b7303828. 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/728fb198-57a3-427c-aca3-4d8ba4e8f785.json and https://artists.proofprofile.net/proofs/artist/728fb198-57a3-427c-aca3-4d8ba4e8f785.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 0x6d92977a135e4f010fc014d89e98aa49ec0bd004554ad227ef736383a4bc2217. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:46:41Z), 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/USRMK1004902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f466f373a3f51d77c666251f75e3ce5db3e298018032df56000fa5462a8ef8. 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/USRMK1004913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1641e584df0b5498e88a7f65699239e3e47a9a4bdee65d630c1c5d7b5d0db06c. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QM6DC1673855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89aaaf0da36ca1bdd11327f638a2ecb920ab14c732259771fa3fe5e7e0d75c92. 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/QM6DC1673856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2a5b3934643ce5585b44e9ae039e478bb4acf2aa4599cd59e2b9534551325b. 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/QM6DC1673859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ceabe909a593a58f0e0f10c66305b86e7dc67f36a982d4bc9e0ae23e7801da0. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:42:41Z), 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/QM6DC1673861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44317fb5ae8e2005bf8b0bc6242b2078b0e1d7ce5efe61fdb8145bb7538df0e4. 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/QM6DC1673863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecfc3a65fbc0547fbcdc081c22d8154eb3c013add29a56461da1ccbae3d7762. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:19:29Z), 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/QM6DC1673952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660dd603d7e750c347440ea430db31e45eb3da62c48da30b0098ea495f1a3278. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM6DC1673953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1f792c8fcb325b1f1d64af90da4f93442f575616b2fc7b47c268639e7bf8d3. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:38:53Z), 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/QM6DC1673954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1f50f23cb94816c97885c5fa2fb944978087a9412bf7a873ec793d6c429565. 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/QM6DC1673955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2425bd2e7bdc63e96844142ddb90089f1513087e05c952fca2bcd99e26078af. 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/QM6DC1876139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868abdfd5dcae8d9de9fb2bebb95742a8bf2ed40d8f362a0b448b3688e0aae76. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM6DC1876140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7db64c0ad1d8f279a13a31f6147e8b3229f43c32acbc2d0dabf18408ae1eac. 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/QM6DC1876141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426690fc4a9538b7c4413bd7366c94d8b8e52e6784273b2e49c815330f767275. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZDQH2141748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bf786e2c5cd87a6306372c3d7bb139d5be9f39b387c339cb280c00ef9e8c6f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZDQH2259130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2021f87e8fe18eb5e7bf6b7186cbf96cf5208bd92a1f889d80c4ea97b7a9255. 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/MXH152400409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e65fabe139c2ec24d9e402640139d3ce4074e02706d67c825d1e222ce47d29d. 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/MXH152400410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb445d5e3a1e84ec985a505d08fdad8309698990ee0677e922f48addb79b2dea. 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/MXH152400411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098e0ebe32c00735cdfdec7c272b0cdc7f6f3224569a4b2e4d7d0af3a1f2bb6b. 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/MXH152400412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e93bdacb3f8ada1193591771ae56f7452fac0f12397252a6dc6559aac957248. 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/MXH152400413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc049d3ce6f5885fa8ddeacc6905abde963e1fcdc4a63bb05bb8557dcbce8e97d. 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/MXH152400414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955f9601438d422e88bf4467465b0516c2bc5ec667f85f186494c2081876b721. 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/MXH152400415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b966e5f0d6958c364ce27c9dd04b50eb0f72a2e5373af4bfd12cd2b65b31fac. 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/MXH152400416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567564d29fe141acd53a6bdc0c387724e3acc740f7693fef37fee2b29ec27216. 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/MXH152400417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8456a85ac712ad65245a9c8a56a919904e8416e7bf1bcfdd5bb6ff1b7ee6717. 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/MXH152400418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0763236561b0bf808ce6cb7f21cc745b85c8a1b98ea306b37716ae0b895632. 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/MXH152400419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab49641c3f3c840efedf5f2b3e73cc8b0768ed8e9f7736c80862128f9345c6b. 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/MXH152400420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc01e5ac3b71ccf9e87356535333bdc18e881f25c8b729edf2dc3e4e43c4271. 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/MXH152400421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51646c8f4ce004404f26d4ad8d4fb3716e3ffd690c0a6bf44e756a5b37dcc326. 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/MXH152400422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fddafab730fc8871bb95fec2d7888ce3e8a8e55bdca5bd7053b23bf4504173. 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/MXH152400423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef398be9787a9fae290a2aa1d3558cdd65f88c955cfd51eda012af073c59dc29. 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/MXH152400424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fe7cb85392a26614503aebb42b45480b45ce698e5b0e065ff94f48e2694ac5. 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/MXH152400425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93995fbb4ff12d27249afe5e833602838786bcc6e0fd0498f2ca4ceea4980247. 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/MXH152400426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe324325124afc2690f3b505bdb1c46a860f39436f66f29a87d9f8cb17ee838da. 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/MXH152400427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0886a9d44ae0463fec8d03fc5df77cc425e95138ad0725437794de6d92244419. 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/MXH152400428.