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 0x7c65226d750fc851d6dcda5318b3ac40e8f9a0228e59a7893df75990b244b7ff. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b87af3b4-41d5-4bb9-a57f-8ea04fb28b74.json and https://artists.proofprofile.net/proofs/artist/b87af3b4-41d5-4bb9-a57f-8ea04fb28b74.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 0x85e5bfd536de091a48c6bdc8bb875d1896ddafa2dc1010ade8598722509360e8. 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/BXIV82492913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a2d0d9538ed85acdbfa38a957bead3719862790f459c6d1de5f4f777d04584. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:05:28Z), 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/BXIV82457351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41449c7afce46126d93cbd891c6625ebec70c12a506a9e0eac5988bc14c0f6e6. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:51:38Z), 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/BXIV82443736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ab905134a4b939c9ccd262001ead0d4298aa982c55be5fa129e4f68c8873bd. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:00:24Z), 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/BXIV82460200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f12cccb0aa9743b6b0c8af646d35fbbe5195c87b98c14a1053ca3ed5df2626. 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/BXIV82492794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67651918276c449769ec899fd49f1b35c2ec74fe0a51d419723be106842392de. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:25:19Z), 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/BXIV82414693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc275fdd6987601bdce481f9a5600c2f3ee487460a65bf73e90d3883008c409. 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/BXIV82460676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb977cb5ad5075bf14397a4b1c4fd71900ef1daebb56020f11758ff15600760. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BXIV82456285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03f90a187d43948ef27d5809cd572f7043ad69641742fb354b4116b16da813a. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/BXIV82463187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda62b85df87e45bdb38817f93c0ac11e54b8815ccc976afc591cf2201cd6f203. 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/BXIV82427296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558ab9aa850f173213ae00903015549910d6ce511656b5045d1e3c779be152af. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/BXIV82472204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64ef6de4d46cf103450070d2455f331d2c600a7cb46981b96428b4743fe0bde. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:28:27Z), 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/BXIV82491000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69c5af6333315e0624c05ebaa0ee00ad13771d023a4e594991e9d54fd74a0a7. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:08:56Z), 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/BXIV82499500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bb5895e122d2e75ad15bbd851b5b1bfb6c134609b3d2e1a32d1ffcba1eaa88. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/BXIV82439041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fd8c9fb6823b1f434b46aa3cc6e62cc07df52c3225b247bf8a622cda63733a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BXIV82492124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f66550f896072e7fbd32d2741435a7f627514e7c892f54489bc735ffcee658. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:42:33Z), 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/BXIV82434003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1667f68c1d41a98fc9fe714284cf1bf2821236fb5fa03ced0decc94c7aaa5d7d. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/BXIV82434577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8c1501274fee6ef3f36a33229a1ba60447c023b184d401d20d112ce363ad99. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/BC6M22507609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12971fc1897fa2bd72b7277865852633ff4eefc48fa49ebc3ad467448cc7187a. 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/BC6M22507604.