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 0x8d949a2f532355618cc91cfd70ff69dfc0b5d19f60e80201da42e736f220cbe4. 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/c4d18217-ea55-4fe6-8027-26a000f110a3.json and https://artists.proofprofile.net/proofs/artist/c4d18217-ea55-4fe6-8027-26a000f110a3.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 0x5f1d1df47cb19d3feb47a8157078bf962e38a8c7b65f04fa3370438b71a1a83e. 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/GBLFP2227944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d0c681655088f75e280e2289a08cbf40bb2d85a726c5471e8605a669357f2d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBLFP2227945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe137499db1088274737398045ef7fd8d7010a7ced5ddd53e2ab1078b3bd4d960. 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/GBLFP2232602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e1b766a21f202eec62624634d12d5817e7ef4e25f8d476d7c02bc4c7c27d6e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:38Z), 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/GBLFP2242505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17af0742b9820f31b604ec3c535c560643e0fdc274c5d588c25ce3c0a13b7c2d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBLFP2242508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719caf1c05aac7deacee8bb82287c1bac24ccd5f5ad9fc796d9bfa184ac16aa5. 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/GBLFP2227946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38e95467c687092dfcbe256137457f300cd510e7a0bc97911c1eb3f26c36017. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBLFP2232603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcea3a5df8443f57e5be80a953568955bdcc657815e0bbb87a9eb46ac7d2630. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBLFP2232019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514c6530ce6e614d5551cba69ee84bbf05954b28e37365cc26d2455ec6c36e15. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:19:25Z), 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/GBLFP2227947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc347361f5e15ac4dff5172c41f84b8f4e6b500f4ddbf61fbcd8f1cf67d47951b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBLFP2242509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe8ffc96808aa44b6838f400241d349be1ef3d16b72778fba66871b062e453f. 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/GBLFP2242513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd341740d4f1a444f66b4278178552a10b2a58d4f95c34bc3196a779e447c34fa. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GBLFP2232037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bc5ca84a24ab22f2561a4d860f6cf6a6f36b6ea58314bf7789656bca382cbe. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBLFP2232604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa3f8cd7616cabd1b0cfa26cf6c59810aad7120bd6bdc58c455267e52632284. 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/GBLFP2232036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cc42ab012e77dfc5f82ba0202f5f8bb535b4995210aa52953c545132a80deb. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBLFP2232035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae89a77685ee192146cc8da9e7ef9e7ced5113b201e6fa2224744e21ccf34579. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBLFP2232034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8d86dbaf148e704ac700c29322ab65539f1a8198397d8bfa2e44e5cfd1e7a5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBLFP2232606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936b475a7fc616c41577f072e8cea09551ea068e68257eedb6a635da43cbbcd4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBLFP2250942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51162a0b09d39632d6014ad1ac7e80e0098eaa62800bc7eda0cd89a676ac395. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GBLFP2250943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0338a8b99d9dde2f981fbb8c2a30e53b476f6e89db99e58bc58fa56051634ff7. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/GBLFP2250941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce575e0b99211eeda4af0f14f3a0a3582d24f247061a7709604141ecb6fa490. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/GBLFP2250944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ddc72d7c83f1e98b22f4ea60bb78dd1b1a2bc90e505b1df9a7e4678397cdb4. 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/GBLFP2250945.