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 0xaddc16256eddac6a279ce450d82126e4818418c662b2b03d74c913b212d4b2b5. 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/b700491e-e41e-4d44-911a-c11cc755ba12.json and https://artists.proofprofile.net/proofs/artist/b700491e-e41e-4d44-911a-c11cc755ba12.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 0xf2c1b82a171786cec4d77b899d2a8890a983f007aad4b07bdde88ca94ae1358b. 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/DEZC62466755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c2628c0b4ea0d795ac422e03e94e9acb4e8db354ca0d709b746cde803e0ab7. 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/DEZC62453529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6586dbb8b05f2fcbaf36f3c97f19039c77e2c67a590880df4b726fd96bc0f997. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEZC62466758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62b8a78829be62aab46af5ba80ba6de00b3e349902e11fc7519b645ff04ede2. 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/DEZC62466759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd1008adb722060fdb68237a19ca0cdcfe672905a30b23d723e0556e1a332d6. 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/DEZC62455824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53dc8f8535b640ddd7e832c69535ecf0c6ea34b8acc735fcc75b76fba118d62a. 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/DEZC62466764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95d279851d02056cc81ecbd91a56ac0793af7f40ce8f5a0715cd9e1c9f58b35. 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/DEZC62458360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1a3093ebd1554c80d33f4f85a175c07ca807fb625b918f3a3cc82f771e3995. 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/DEZC62467546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa181f70f579a4ade8324f02e558a62215e6d0e14fcb564456ebce77c57589b6. 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/DGA082458460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b38a222a53e934abfc4c92f9cbacd86b8b55d3c505dbb2de9f5e82614c89d8. 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/DGA072457167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa181f70f579a4ade8324f02e558a62215e6d0e14fcb564456ebce77c57589b6. 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/DGA082458460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac3cb296319db1b96979418088491be9bac313fa57b9c157406d51765c0b8c1. 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/DEZC62200580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272da99001d489106431c5e554bc1fefaacb6bcfd49e1642c93783977bd282ec. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/DEZC62211923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fcd1720c022c7a6fe10789f2855c2baf6d5b0f19b53bee78d012a651ec97d6. 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/DEZC62211924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaea1cbae1c43fbb2bea20cc23970742f7621891151581c43397e675f9ce3437. 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/DEZC62211925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95515efd0c5e0ca3e5570cf10f236566cdd415a2e1d34aa3cea8f2cc9d5f26ae. 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/DEZC62211926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9682bde69afbabef5a90abf4c3eef6a055775f97139c02fa9ef22d580de84026. 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/DEZC62207703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2bca24b7d8e2b1c408c5a5eb8e6426fadd5ba7ec8b6f14e6f5e91341ebc480. 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/TCAGD2240421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd2cd6db5614da03993c0f71fc4e401dd89ac423518dbbf73504fac4b162300. 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/DEQ022275586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5900cc13dc61ce624fa063f0bcc45cbae43c197089490ccbb36a9ee1095a238. 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/DEQ022275592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d6bd9844dd6f2b228e4f3ca39818927330c084802902434a80226f8362b41b. 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/DEQ022200389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04d43610d14d4b52f5ab218b27e9d4b9d09ac92c4cca782a93881b9527a1cb8. 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/DEQ022151610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18176040dfbf08f7ca315a9e0bc1299baf706d72c9abcdf7582bf7780f5b07a1. 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/DEQ022119767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b61b916d8f4d00e1ab62451ba1af545796cb59f28d0e1e8281b554fa7d81f5f. 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/DE1AO2599026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b38a222a53e934abfc4c92f9cbacd86b8b55d3c505dbb2de9f5e82614c89d8. 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/DGA072457167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b784859ccb437c5bf8be019d6528633c968e3308429ddf6fd5f0aae3f110e5. 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/DEQ022390474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc12784cb369df7016fb8f661996e7ab1758b54ec9f876dbf053670f406e7086. 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/DEQ022100897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dde4dc5d7929888b9cbdde4f59cdeed8c787ebc2b0f6232ca949b88f7d4ae7. 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/DEQ022004844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1691deee3f97bad569145ffbd6a79271424aacaf8f95781a78d4f3a6b1e4b2c. 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/QZFZ42021910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aef57158555df9d8314b27bd14a2beb74974ac9e238132f2dfbdacea7377f78. 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/QZZ7W2435022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b9e342d31c74b4636637f0282b47c68e60abede43252d0b362ac61e4b25a29. 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/QZFZ42571032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafc51356b4fe3244c333087b4e490a55ead2988a5b4ca7bc6ed331b04c7aea8. 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/QZPLR2158208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b9e342d31c74b4636637f0282b47c68e60abede43252d0b362ac61e4b25a29. 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/QZFZ42571032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395307da1f9e2dcd142300d3f8bc1110ce5c9c5ded9b05fa538352f3a1bd8c54. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZFZ42571033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e4770cf175ecf8a2058fbc3b6725dfd2c8030768df5322618e76609c1a2c44. 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/DEZC62431594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2f4a0a0e51b60e119710c97bfd8140ae7ed98ab332f21d2a25451ba3085f8d. 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/DEZC62431596.