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 0x714d95d9ae0f06b6e4181f77e20475382cd00e22df0c2eeb58479c7aac981e74. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b53567d0-a6a9-465a-8f13-86a6d9aebd73.json and https://artists.proofprofile.net/proofs/artist/b53567d0-a6a9-465a-8f13-86a6d9aebd73.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 0x17a52360ade6d91bcd421998c65974917d3fbec3fb16dec2ab3d0d7d1c354f94. 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/GBLFP1791892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c92fbdf84d0d98996ec91fd5a5dd4a27644bd5110f57db943f4ed7fc7916e99. 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/GBLFP1791893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b30b435deceb33695bd5f98a41707fe3c97ad4a0e5991878514233127848c89. 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/GBLFP1791894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba30ab1c4f8f17403fc0272a2f653655af7be273aa44c53fb3c1e0c44ca886a3. 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/GBLFP1791895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6931670352f310e0b3189b42991bbd67252db0a0136634fcbc5419b1eb40faf. 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/GBLFP1791896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc6f8cee6ace35e5430fc08974ac3962765a1990a358113f26249633a324783. 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/GBLFP1791897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1084d190d611875233b87ced89ca5b8b5801b3042cc782d906c947b78841fed2. 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/GBLFP1791898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1cb39bfdc55fc87e6ecfa854e94feb0d9dd5cf0a0801676717fbbfb48c2b40. 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/GBLFP1791899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b35940328ce06aee8b6829b10730fdbf65448c816c0d87ffa66e12ccc3feabb. 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/GBLFP2437774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe639cebb258baa3ed8798dabdd3013d28bcb8ae0a8e73128669594a35feac5c1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLFP2268759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aec81159860c2f70f94eeb676ecd19c0d5edd6dfcc4b241a25844cbbe9c16a8. 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/UKRY51900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34e2a15be81ad621ead071aa26bbf5169b2b2f15ada89955599724913cfe788. 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/GBMA21937219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eacdf5617461189d084fa05308c0de3fe5247fb6511ab8f881d93100a79a0c0. 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/GBLFP1881115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5922d39844be1e59fc8604666f94918b4b74cc63cf67e5d2e7645bade7f2aa. 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/GBLFP1785441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdabb054e389d0090ed1ddc02eb912dd52fbeaf99954a1340429206d5563f8c4. 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/GBLFP1779634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe46022b44b02bbb77fb105bd8f161904d20cc1707e5fbfd44ee9e1442d20051. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:20:31Z), 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/GBLFP1763460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd415d13883ca0959e617670452f8925418f3243dcd787b15f261e7f4daa24643. 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/GBLFP1721252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517a0ae70cb8c86783dec11ee3941f2a81d8ceb3e98faa9c056fa38197c44937. 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/GBLFP1779174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1afc04085ca747a03f8e0a4d7b2d95fbb10190d16180503b6e2785d9de8b5be. 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/TCAEO1954930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9e31d4725fe6cb66bb17ce6f28bada7a6c970b90449957aa24a33f723b4f23. 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/GBMA21853681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9ad66587ced39af6ac1f66b48ee2a23a5693e20bd36f490d70c85668b93712. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBMA21861852.