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 0x7bc5c7412d3baae7b15a3b52f82e7506fa992b3c562de52ea1b2e20181a527ea. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee6ca14c-e349-4731-96ce-04d18a366778.json and https://artists.proofprofile.net/proofs/artist/ee6ca14c-e349-4731-96ce-04d18a366778.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 0x196e6b83c9b82fe8a56533b0873ca28a0db133afa65537f9b645080a9e2f47d9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BR5UL1700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7872c5269b6ec4af9afad828598cfd7bf6e0ec1f48c171f38c8a1aae1bf5df. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BR5UL1700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222983512b0b3af08527e3742dfac229063a1e53e8d971b5352030a35b90c1cc. 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/BR5UL1700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e6ac29d8218c42280703556c1d12ed48ef69d0b094ab290358b14bdcb9bac5. 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/BR5UL1700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f82ce90f4cc8eb354430227f1551ce918d6cc839fae35400d62c21b6dd00837. 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/BR5UL1700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ebb5f2b32dbd5c333bac419ad6d8e043b311ce2ef2234439f601d06a503f0a. 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/BR5UL1700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d19f1e4299761533663f1b427dc3dd894139580f7a4b2ac4a22441030687402. 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/BR5UL1700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441f552f233a39188a8b1d3d49b2cbe73049373afb032398994736e1fe05a1b1. 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/BR5UL1700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c39aa25c32ea8deadb4824b2609ba656de1e27886ca3e963ba925d8861a14fc. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BR5UL1700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144e56136a0ca547fef73804aa683b29723d8350bb2248d0b920f692ebce928d. 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/BR5UL1700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0ff7ff9507deea306732bf7654f297217154589a40c940e80f50fa3d322568. 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/BR5UL1700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc22b3570d3cdfa9aad7ac2795af60bf84a4e6cb02552c9474cceb2d5530d6c. 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/US7VG1584786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93173f83b6ba19de8650c7d0c8b4b246c561153b6b40b73d5fef89c7710b86db. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US7VG1584787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613547f795c426809bbb5b6337951bde7a2922a7b22284def680a56004cfcc47. 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/US7VG1584789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b61bacc72cab7aecd213da86c675f2033b7e83b891dbbae07f7d33e3e52a5a. 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/US7VG1584790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a00d943a8697d58c9aaacab5efcd85b1ed58e1266f6d10dbb02e4e21869d13. 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/US7VG1584791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c991d906ef3a5eba6d21766745d4d1fca90ae87c9273c2b5c5be2b18fbba4d. 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/US7VG1584792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d1e9ca021c876a5f651b045a0c3abfebeed28d09056e2df20a7610710e1136. 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/US7VG1584793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e4e6ce2287e26fc2e6569a1b4408cb12af093452318d966df4d773b940435b. 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/US7VG1584794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdd4d2903fd12b943b6a10269a4f132fd7a3dc78eba5b283a8f1df9d13b6b66. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US7VG1584795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa292c4606663af6d6ba1c63199b1121b22dafa44bb36f10edd60e1498fad1a3. 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/US7VG1584797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8bf852a7293f11492b2954265efa5e850386f61eb0c60c1355cbaaa22594ef. 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/US7VG1584798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb9870694e1355392ac41d3ab610b3f66eee124b969be2e0b069a4e998c7048. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZGLM2027775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c8e92ea1d0eb77e539e43178eeb33d171be7bca78d081154dd48a4dec27036. 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/US7VG1718520.