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 0xb4be34c989613ae61c2517e44da9374f85683c28b8b998c001eaa2bee02d30f0. 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/9e94f2d2-2164-4fdb-b790-a56fb0fcdece.json and https://artists.proofprofile.net/proofs/artist/9e94f2d2-2164-4fdb-b790-a56fb0fcdece.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 0x1ad78506f755e022436da513dc5df29f493aa91ea0997b83d8fc3746f44da63c. 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/BRAPI1900271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2250189a9d60cb20b0d3388a24ef73601fe7653ae2af9050d3207fc2857b0cb1. 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/BRAPI1900272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd594c0e1d7f68ec5e14902896bfc5a5e6fa89ac8ac3fa413f4dcab26fe527fd9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRAPI1900273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f08f7e68463e1b7b0e73d37d2b2fe9fe1eba1ad3636551e3507738657f09f7. 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/BRAPI1900274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa599b9944c027ab64b34b7ad75a24e313739f2551da5b53a8cda5775f8631889. 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/BRAPI1900275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe696ee288809ea80456f68f122510e90fcd1ab29650f0e752d09597424ecc8c9. 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/BRAPI1900276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c8af4916e6b2aa009043944bf44d92f9d424f5cb3d86cb46e97ba9c4e56e8f. 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/BRAPI1900277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9465a8327f71c202e28a1fae9a65c1d1b2ef8693757d1a2c2f9c9a050a04b3c4. 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/BRAPI1900278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee354ecfefe96d1d714f726bd6eef66a691e0c09b1fca15189e906115a4764fd. 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/BRAPI1900279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc44ceedfbbd46d4a4276102935adc25531007e4f6ec6bf60ac7c1f60de24166. 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/BRAPI1900280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce77864257a8e58d1d91b750681f9c4935f03fa30c17a8a55ab93f5162f9e2a5. 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/BRAPI1900281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd6b99873aed40e1566dcaf25de882c00d5128ec329a0fc61295987a6b1f3d0. 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/BRAPI1900282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad78506f755e022436da513dc5df29f493aa91ea0997b83d8fc3746f44da63c. 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/BRAPI1900271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f0da9dd4f3832a6ab754d19ed8326e42dca79ea6276810997cdaf9b30ab75f. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FRX281717288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0ec091b817d3718441508f79380b3d696aa38302e8c30ed157aa19d8f4b48a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BRAPI0600874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a02eefbdc38e4538ddef35f2cb85972b1242b9e5eab65d58a0f2e7c6724ed6. 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/BRAPI0600884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fd32f6a9b05572a92d445d75666cfeae97bf9940007685709ee51b5c623c36. 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/NL3M12405892.