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 0xc799da2a88c7f58eeb5d3f392d23f4bf04b15da45a4ab1227405cba2b2c4d8f0. 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/8ad3c56f-a52a-4f42-a789-29ad8b57e23f.json and https://artists.proofprofile.net/proofs/artist/8ad3c56f-a52a-4f42-a789-29ad8b57e23f.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 0x3e08c066255e82e9d08b4ed1c216a76b74eed62c4d8396227436e05f04877d74. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/DEGC62202680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ed2ee7c333d52ccdb6ada0490f116c09dc7012790f00a72805f4af6354eaa5. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/DEGC62202681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab040beab4b73e8e197a1dc3e14fb30893ddb4d9219a2a510c832851dbcb0b1. 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/DEGC62202684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81f01a19ef05dabdc68431c85f105a9b4d07929eb9816c3cbb0592f8f4e4d71. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:08:55Z), 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/DEGC62202685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7068625593eaafc86d1e1660f1168f58539b69e606dd325437dba94731c2315f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEGC62202741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbac6393f88498bbda31c6e77326a2a74ce0688ac87f4e5d29e2ac3aca055af. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DEGC62202743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6feb5e1821d4998ef81b7d18c0db57d4133b3fc5aaeda9dcc820eca42e8706e5. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:20Z), 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/DEGC62202744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa573a3db4e616fbc6af5fa205ed47613a17a7cfd3bad50338d31ac024817e78. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEGC62202745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6385256091c373453eb77d3dd23c31dbd3ef3155ffcae81ab913b78f0d3711d8. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEGC62202746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b2648e19c92459697e65f20490a2e2ddf11e37ef8ae11bf845a986a5f23848. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/DEGC62202747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943784e5b88cb0014ff7de5a9919fc23d2f9cb156d09e5ab7453cb9710eeedfb. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEGC62302901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2d5686ea41f276006d88cd51d95d1cfb52790bf484482d670d75cd33cbeac5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEGC62302893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943784e5b88cb0014ff7de5a9919fc23d2f9cb156d09e5ab7453cb9710eeedfb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEGC62302901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf6c226ccec2e832933e6234e5638af5e8c65c8ba3df0855600046885873aba. 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/DEGC62302894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3cd99925d0c2ebe6637960cb0d39f8ee265f84ac5646e880253a67d9cb921b. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/DEGC62302899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e7725e77a199af033d69c450a31f23af0fde1ac684dfa9f95a66dfd1a09610. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEGC62302892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf6c226ccec2e832933e6234e5638af5e8c65c8ba3df0855600046885873aba. 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/DEGC62302894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2d5686ea41f276006d88cd51d95d1cfb52790bf484482d670d75cd33cbeac5. 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/DEGC62302893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943784e5b88cb0014ff7de5a9919fc23d2f9cb156d09e5ab7453cb9710eeedfb. 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/DEGC62302901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40e22786feb41d4e7207028f780c7d7d9b9fd84d25046b921d59f5fd9cb304d. 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/DEGC62302891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3cd99925d0c2ebe6637960cb0d39f8ee265f84ac5646e880253a67d9cb921b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEGC62302899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e7725e77a199af033d69c450a31f23af0fde1ac684dfa9f95a66dfd1a09610. 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/DEGC62302892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e632987412f15b543de016d05e2a3e3d2a2ae817b857b33e4f47f70c5cc2ecb. 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/DEGC62302890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40e22786feb41d4e7207028f780c7d7d9b9fd84d25046b921d59f5fd9cb304d. 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/DEGC62302891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e7725e77a199af033d69c450a31f23af0fde1ac684dfa9f95a66dfd1a09610. 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/DEGC62302892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2d5686ea41f276006d88cd51d95d1cfb52790bf484482d670d75cd33cbeac5. 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/DEGC62302893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf6c226ccec2e832933e6234e5638af5e8c65c8ba3df0855600046885873aba. 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/DEGC62302894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3054bae64d4dc1ad60d0fe49bd0d115f96aaff34aee137d2856a03d2e65cf1e3. 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/DEGC62302895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc948477b80b5e45d4defc4a24ce2aafdc591b431cc875c00278ce2d40da07321. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEGC62302896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d324057b21dd6c6d183ebfbd5da08c11bc82e9e12a4b33348b101e67bb967c3. 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/DEGC62302897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae8f01df65060ef73254fe471126ca9bad866d3dee39fb6e1b71fff353e177c. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/DEGC62302898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3cd99925d0c2ebe6637960cb0d39f8ee265f84ac5646e880253a67d9cb921b. 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/DEGC62302899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc31d30ba15b09763380cbb26aedf1c52c90c00fb4ec44bed3a1670998d0fe53. 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/DEGC62302900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943784e5b88cb0014ff7de5a9919fc23d2f9cb156d09e5ab7453cb9710eeedfb. 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/DEGC62302901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2a1d6cd5922cc3e6bcf0db7b2062c849a5e89a4c061edfb193a977f97211a1. 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/DEGC62302903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa357a38b46aac9e01d30746806caad2345a35b69d2fca4d580a3ed8ee756b7. 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/DEGC62302904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccaddc70470371385334b97e834179b7b517dd5c157f6134e9e7cf60f738a60. 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/DEGC62302905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07f88a6f2cdc625eb176afcf3aad586458e7e0fca31c047bcccc7629de44548. 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/DEGC62302906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682e1ed5ed6295388cec6a2d36c532d92d6af92d6a5fac6870219aefe74fed0a. 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/DEGC62302907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c07a206b78b374bcf559a38d1ecc6874c63033c52be57ded79e63c63bd26e8. 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/DEGC62302908.