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 0xc7872818bf033dca920f8c031e97c45bfc93c4d426f929a81caf94a2d767d66b. 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/fb8897e0-955d-498d-a430-e27b24824ea2.json and https://artists.proofprofile.net/proofs/artist/fb8897e0-955d-498d-a430-e27b24824ea2.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 0x3f6a58d37464604b38b0c804fba57cd597d847fd19d28e0f0ac4aa62b4bdd5c9. 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/ES71G1707020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de1167e865fc4331ba9d92f44d80fd1253e929ff1e5e9cc720db504d9a134e7. 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/ES71G1707023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf3df67d22c80bba962127c79128a82e390bfebd8f4bf74e01cd68bd8d954d2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ES71G1707028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6a58d37464604b38b0c804fba57cd597d847fd19d28e0f0ac4aa62b4bdd5c9. 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/ES71G1707020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de1167e865fc4331ba9d92f44d80fd1253e929ff1e5e9cc720db504d9a134e7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ES71G1707023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d80fe3a3e0280928947d677efdd059f4b019345404bd8ed13776f1af9faafa. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/ES71G1707027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf3df67d22c80bba962127c79128a82e390bfebd8f4bf74e01cd68bd8d954d2. 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/ES71G1707028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da40c8514ce24fd17e6a005f4f0d9feae4f5c16a2ecad280be59d6aac3cb15d. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QM4TW1909858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0489d6f3fac4c83402b0759dfc2a989d593922df1d03490d05597f8a65f83588. 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/QM4TW1909860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e4a0ac4296cb77517024a2ef9989b206b53e2bbd872b6ea186844bb7b65667. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:47:42Z), 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/QM4TW1909878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10473081330d6f0e9eeb147b8606f8b41ee83c1b316b5b06b3c08d9bb626e0ff. 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/QM4TW1909887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da40c8514ce24fd17e6a005f4f0d9feae4f5c16a2ecad280be59d6aac3cb15d. 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/QM4TW1909858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0489d6f3fac4c83402b0759dfc2a989d593922df1d03490d05597f8a65f83588. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QM4TW1909860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e4a0ac4296cb77517024a2ef9989b206b53e2bbd872b6ea186844bb7b65667. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QM4TW1909878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d1099de1bf528901d0f6facdeaa78aad120170923384ca6b5d9a68572a565d. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:36:53Z), 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/QMFME2094078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b52168797f7431a0d7a0102a75af6fb7f847cd26699c2cfa793eed063455a9. 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/QM6N22115772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b52168797f7431a0d7a0102a75af6fb7f847cd26699c2cfa793eed063455a9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QM6N22115772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ec64eae6481874e0c6de49000a9250586b40b96d393ea4531c9775373dcc4e. 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/QM4TX2288619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45497ead5fe92a77cf2aac38d4b3d43f03b6c588267c3f5379b1f286eb82febf. 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/QM4TX2261734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ec64eae6481874e0c6de49000a9250586b40b96d393ea4531c9775373dcc4e. 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/QM4TX2288619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acd9e18df34cac132da34ad76c433e96554352957f7c21ad61030eb31699bfc. 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/QM6MZ2277274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d91c29666c24fac6819d54983e65bcc55231bac45de1b971c793e1ca5b48927. 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/QM6P42205601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6374cfba9c3a798c0a93d4e8cf2a689e19e12edd0ad6eee0be5dd9d0fa818a8a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMDA62210634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5605f303f59ae65ef4108be14e098622b706d88fd67616852f9a598f93f7de2f. 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/QM4TW2302956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45497ead5fe92a77cf2aac38d4b3d43f03b6c588267c3f5379b1f286eb82febf. 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/QM4TX2261734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ec64eae6481874e0c6de49000a9250586b40b96d393ea4531c9775373dcc4e. 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/QM4TX2288619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acd9e18df34cac132da34ad76c433e96554352957f7c21ad61030eb31699bfc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM6MZ2277274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d91c29666c24fac6819d54983e65bcc55231bac45de1b971c793e1ca5b48927. 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/QM6P42205601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6374cfba9c3a798c0a93d4e8cf2a689e19e12edd0ad6eee0be5dd9d0fa818a8a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMDA62210634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b38276c378778bad0f5b37398c85b03809d39ba8bb50bd9b04c8603738ebadd. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QMDA72255894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5605f303f59ae65ef4108be14e098622b706d88fd67616852f9a598f93f7de2f. 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/QM4TW2302956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c5fbdd791ac0ae87ab54b01054207587df55caa94cac7c1023a26721fbb64a. 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/ES31E2505102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c2cf1b04cd08747d95b454c06fd644c9500f9596d6e37e08f1315888a1c9a3. 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/ES31E2516719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063554ac8c5933a3b9ab56aeec9f839aefb283ca3a132d51a5a3f4a422565319. 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/QMFMF2105815.