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 0x436893e89d8e7a76b09fcb29aaf664b1b2bd3166b999d21a18f40639f0f34586. 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/aee65b55-75fd-4eec-8251-5857203dfd61.json and https://artists.proofprofile.net/proofs/artist/aee65b55-75fd-4eec-8251-5857203dfd61.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 0x6b439a2f823dc3c26be03767816dd8e009c06ddc2a8c50145a933ecb23c542f2. 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/USHM21391828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d2787d180004497f329b4f48c794ea4d562569e03bfa620225d2125a6dcffc. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USHM21391832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62472eadbe40f9a1920f91d2247425d56729e7b798cbb67b19a266a14c0a897. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:42:25Z), 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/USHM21391839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4574b1c50ad8dabfdb28ef5b4b86c42fb959ea46daf015ee728eedb52c18088a. 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/QMAAK1603817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe341d94c2f3222e28a4811b18f4e2ae6d1476e5260aa074c2762f61e488b6ff8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:33:10Z), 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/QMAAK1603818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428ee0e379275abc03d2a119e63724d15acd2d744468b3a72392d29a7bc6e953. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMAAK1603820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b121e36d7f46956aebfe6f6086068cf577bf9422450125717e2ba3198af6c73. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QMAAK1603821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75151efc8e6391d1ef72a3bef088b846c7735827490d8de9dcb395224c78cf34. 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/QMAAK1603824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa308915cfa2efb784f2221cf4fec9c6c7d17554fa94ae2b10a78a1ad69df174c. 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/USDY41715796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644a56c8f4cb56e786a3fcf8a407b27a3acac2096a8e4253850bce8984f1ae9c. 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/USHM21749982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c8555515234df84d69f1477c05edef4765c1905ce43409263a2ee9ef278df2. 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/USHM21749983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1ce82f81935d044765b41edccc5133f468dbc893ec4e34cb60d995b4cc2717. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:41:34Z), 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/USHM21749985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4363562d3af8bd6c728bfedb176f987c143d65b336c6ebb1cdb895bc47f04675. 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/USHM21749986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8bcd9c9e732fe0336d7bba3ed79b38b024c9d3599a58db68bcbc386e8976f6. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZJYC1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3e5b73781afc20159662f1ed90d40c583d332da5697d19733256aaa5cc60a0. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/US6YC2304921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bff1312bd3a04d7980780201a2c0f5b8c6bc1c544bddde4ae4d8f3a7ffccad6. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/US6YC2304847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6c6ad2e585320e33c56aae31c51ee9b2a920df0e7868cc3c01db2334ed9f6f. 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/US6YC2500088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc72e172c7da2541fc2e306a975e191517942b6f00ed0d75b736cfe6ead13a18. 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/QZK6K2418070.