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 0x89848bc3599b8a36b22114becd05296688722a9a739b2482d4cb9a1ee11e2ade. 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/ca9717e3-0f9b-47c4-ad05-9e21dc944710.json and https://artists.proofprofile.net/proofs/artist/ca9717e3-0f9b-47c4-ad05-9e21dc944710.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 0xea68c6cfb3b9ba843e79eb48d0299ec75bd5166a84e6519db44503a90a434a59. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/DEAR42249108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd026c96bda4cb29f07bab4ea66e838ad70918ee3eaf96b7946f2d7d29b195cb. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:09:48Z), 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/DEAR42391673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a60eb864e2975d5f23ded258bdc9fa6bffa4a9cd57f1f0307f777224a9494cf. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:47:40Z), 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/DEAR42355192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc43f16521e3f6eb6dbc8bdcdeb8a486085bc8ef5e7251359a86a6f88635c61. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEAR42398686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8669c5ec67fb43a036a03e5f38588de7552c258e16069c6f1d04814a8900e19d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEAR42380918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353912407ca9d0761afe74d732b4cae36b1aca29fd4b56d95618b60e0dc5b699. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:32:42Z), 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/DEAR42390169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a183987b1aa945e77f9352ac588b8570e56e8a21f198ab8879ef546f1361c0. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DEAR42360324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69c4ddd739baa9b4bd56bfec62f1308645ba524ec4272742a51b56d664c7afb. 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/DEAR42303464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013daa6aafdcf0020d247ec3e0feee5b0c446fc4a66884f537715fe0e4d21299. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:48:22Z), 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/DEAR42340458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66c7c58224b13846b338556ef24fb12679231d21a3d44ea0cda6be4ee31ef3a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEAR42353057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cbdb5bb61d44661ded486e409f1369a9af43916ced8a195652d02d99262d35. 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/DEAR42396952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cb5d4d50799deb95ddbb3332e0f2eda14959b24f6e16334a8049c3873ccdf4. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/DEAR42321082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47e9da4202baaa3fd06cbc025442cd70f78433001f9abdc9473dae5952c9f57. 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/DE1JN2368163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b83745ed2acd8bb4e066e2d539580985fdb6218dc31d3eafcc65742eb090b42. 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/DE1JN2354436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7933cbd1b3d29ca38c350fbc651b43e7fe5198b410426270a718336b7e8d66b1. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:30:04Z), 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/DE1JN2354718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b983bd5ee2c461dd08827b7df6b78d3f0f6ddd424440e239fbe3c12220a920. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEAR42431832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df7a23f85ba4bd196115a9f10fb37a336da6ac7288afe9e9846062d0bab1a6a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:36:40Z), 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/DEAR42431942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34d0409c9f3b26bc1069a4bd883ee331116e5282431ff8c1e88bfad17f9f290. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEAR42431775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeafaf3e31d6ed947e31eab9a80c6d79cc4f95be2b1f9fade9c9f5663ac6e37b. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:46:35Z), 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/DEAR42427710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06a2f3501ff13c52bcdc5974172d01d196662284f0da5ae20651b0b5c05d700. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:21:31Z), 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/DEAR42427246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ef9620988836926db73ec9cfd846abf954d4a52c6d536c233989c4ab253d45. 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/UKZJ72201224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41fe62b87554228e9592d8663d322f17843c506c888e73db0701ff7fe6f261b. 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/UKZJ72201223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1525c0bf080d4abb642820996dc33f47131f07d19866efa7f038eb4d53d79ce7. 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/UKZJ72201219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7aae8f610d5bb3006eaa100bd0036740781486f9f3e4b729a4bce8a658bc807. 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/UKZJ72201220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9875d6f904e8d15704fd7f66a0bf8d1b76a2bfaf6bc20145de84f6ac2a2fb7e. 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/UKZJ72201216.