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 0xf656218f1ba72ec7e547142d2a34c0045db318494559d02d9a74d22e45719cf2. 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/f7dce057-5485-4288-873e-6e2f5d12a94e.json and https://artists.proofprofile.net/proofs/artist/f7dce057-5485-4288-873e-6e2f5d12a94e.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 0xd6eda0cf19c41635b0c442c4488303ff144096242bae8ae7f787bff207d18b0c. 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/QZ5AB2362847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddfa249c3b14d6c0583d37421bfc1a7c7b46cb6c2aa665abccee4c09a238acb. 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/TCAEA1839365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121bbbf235918289eb1d430c638e767b4b66669c3547786cdb27dfc1ab3ea8c9. 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/TCAEA1839377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57ed238308c1e68a79b2bf6bb0866cb98ba2f43c4d9a401e4f9c421f1a0f057. 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/TCAEA1839400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0fbcc9fdd8361b2a5c09210d4e889dcbb1abf3e58c66dcbb8cbb32bb946922. 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/TCAEA1839402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38439c03bb7ed0f3129d59d0b162185337e964086efe4e794296da0a23920b09. 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/TCAEA1839447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e84ae2a2b7f2dfa41b6b8b8213f3c402dff03ee0ffcc19b29391691088493d4. 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/TCAEA1839452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd12f28eff8fbac1eed9bc601c9fad842a356d6bc1dd8ccd7de7bdd807037e4c. 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/TCAEA1839571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bb1cd5f0d92b98ebee74aac60886ed4df5e16a832d56c5bac619bb2ca8f1cf. 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/TCAEA1839658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112a5693c91520d55d58428875a0b908b71c99f182fb126308ee71feee6cd261. 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/TCAEA1839660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b2fde4797aeb1663c388e318da5aeff862514bb87e9e2b9693490faba93ef4. 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/TCAEA1842053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd206acd10305951444631f1536ddcbcdcd9e58810a789d6f5e526ddb94c99e21. 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/TCAEA1842059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cb3c4a90bb7da99aecc3728ec83a38a8448a036fcbaaf220eb230f28f5e48e. 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/TCAEA1842062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197c82318f1a559c9d514577e16685396c9a93fb499547fce6f1a4e59f762f66. 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/QZFYW2082831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e536bee756b3e4a828f7056e0717635ec094b2ee7f320513ef67e3e939ca5b6. 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/QZFYW2082832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7723a6f5ee7b0821274f5b131d9acd31d36699d3bea5c18c3cf038beefe468. 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/QZFYW2082833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48162725a36b13bcaf64d3f5dc7ffc11507f42a19c8e46a414a04cb23741a66f. 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/QZFYW2082834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa126b55298a72a99a0b2e0de9f942820936680824b1e8a9778e92d1043c05d36. 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/QZFYW2082835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8159105bae25f2f8366502fa01313e6c721685576ba8271c24dcd717d6bb486b. 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/QZFYW2082839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6e6aca9287399fbffbc1eaa15c26c80742d9f3a80368f751a500b81b9622e8. 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/QZFYW2082840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9783e34badadb0599c09d9aad6c7eaadcb8018731af12309b2ca8f11abeca9c7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZFYW2082841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87ecbd34219f482b4e1eb2a4c3f66f1170cacf133065df51dd76e0a3a7199ab. 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/QZFYW2082845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0378e7043e48e78d476c8c906b31f234c93fc728dec288e74542fe48621f998b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:48:09Z), 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/QZFYW2082846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae7dcacba77c8b753fada87f64e606f6585c88bf3266a71f22328ce098bdba7. 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/QZFYW2082847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6667ee7ae0fc8dce71de0a90f73b9c52784921f686bddf484f376145732fb5. 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/QZFYW2082848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61f71e93fa58a91914105942bf924271bdd2f873caecba0345cd298919a1836. 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/QZFYW2082849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5bb90a08ab6e59fe051deee8de361efdf699688e55d1889fa0b82061be0dff. 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/QZFYW2082850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c91646c42c672e7f313047a3f1271ee6cb05f87cf599540931a61e1e0f5881d. 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/QZFYW2082851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bddff116e770c8014be7fdc70e81b38068a64b380e394bdcedf6c423cbfa0f8. 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/QZFYW2082852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277b2eee557aac6f3f09d057f2add3394393d0d5415b78e73607f68714ceb9b6. 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/QZ5AB1623704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31ba7782d77d9499f8894e14d5b49d41cee2d2ad603a9221d742571bce27803. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ5AB1623705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae03a5c8f0d4f7c07b3b6d8b13eaba850e29afd30d8a4196fcc74c3dfbe5fed6. 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/QZ5AB1623706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa2c85daacfc0a51abd0c55194a0d6bd8471f2f876ea4c4b565cc1b5d874dde. 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/QZ5AB1623707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e442b7639c8c9f68330515382e7d6fb33409c30bd32b033ebd045fa0813b1ab. 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/QZ5AB1623708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315f22bfcb21d50f636027436d362d9b2cb902277a8153043df918d8494a3167. 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/QZ5AB1623709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659725ffbf34aa0249b9eed2b1632dbc4f6565852715604f75c726be61bc7e59. 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/QZ5AB1623710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca6db3b3eca65a68923610026fd512313ea95b7333553d04ec8c12fb23c697e. 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/QZ5AB1623711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad10469c6e37160e062b7300e6ca8c9fe2bc47fb43391249f5356e60a6145665. 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/QZ5AB1623712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79da47b0ed94705701c1b0575c4cadaf398454941d4629d5ff6f7fdc376ebe2a. 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/QZ5AB1623713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb4dd8294df9185d9ae49ac6e8b6707670c09b00edff43509fbbeb08b2ddce4. 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/QZ5AB1623714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99efa75fce41ffe1e06c8d364e686c01979d693e7d463fcb9123625e983601fc. 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/QZ5AB1623715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff466d7a6d267a680737df3f58cb590aedcec310d00e2d6adbcc2bb1941dfba. 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/QZ5AB1623716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6b4128ed3ff8cbf754407fbed93c08f0a7e16d28a5a7076432e4e68e48ea3d. 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/QZ5AB1623717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09851b4ee0d732903854ccc2e1f850ec86537e31d66dd0543011e3bf100b295d. 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/QZ5AB1623718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040b323bc74878bf1f7d0d03cac4beca1c525087b3bf85159a98b295181e0bab. 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/QZ5AB1623719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448c942d404123083454a28b80e052122ad4fb686123279ac384866e6402a527. 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/QZ5AB1623720.
Maquetanderground (Mixtape Maquetas 2009 - 2012)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cfa00a23431bedff484710be8ca8f0e6933017608150b56d3dab9ce0717fff. 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/TCAGE2255477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b12dff2c132b8e4286f6b7e80bc3812a82b7a06d35a37eb5fe2331671cd1bb. 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/TCAGE2255548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40dbd275ca03f2e02b71a9b7a4ca5a67157eb892d8041b0c043d5d473fb5675. 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/TCAGE2255552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691e5d88e1a377cbdf6caa2710d29a37e731526e49b1448bed65c3fa123f14d0. 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/TCAGE2270383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150739d2500efbd45d948f7359ca9946bdf72b2d00c6ba67cb1455549d1c277c. 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/TCAGE2271045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bef1f8663ea286dd3c0563bf02f77bb961e921d91fdd0f3cae4caff499b9a7. 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/TCAGE2271076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b82fc64beeb56c32130a3dfdc3d7ca19552cfacaa25e333a2efe57e91c965c. 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/TCAGE2271189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba3cf9ebab44e489b81362bb9b855de13a2a3ea79f30ef65149c44bc0b9005a. 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/TCAGE2271241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcc8358edeaf9353ab3aae761c7ab27a1a78926480611910e9d285a10720931. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/TCAGE2271247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f6670d6ea29f5de78d74f5057ac786b4ac15ffdaa7f415f4c6e1deccff1330. 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/TCAGE2271263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ccbdbcf3489b9c17017d776a2f5438d15303e935834cd0ffd3636d2c03b488. 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/TCAGE2271270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c50e332545da8a76c319c7cb21db0a7786efc14975516ab817b325ae01919e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCAGE2271286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126a28976b552ebb9aa10056a3c6b0ca6d4d9fab0f118b53a39e631cf48f5449. 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/TCAGE2271292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6790ac032b5ad51780f75dca0b61a4c1d8e24d7be7692ee6ffc8ec4470366df. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:49:05Z), 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/TCAGE2271305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca66f02b7f085ca3cb5fc18eb2213baf7ec16619e411ac9e0e7523261f31379. 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/TCADB1730284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc37ce2c9c7c9f8f4a41e4f75d28ac554d90a6645ac1283eb226c9fc60cfdd6. 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/TCADB1730287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993352204701fe37306595c3b2295df0a46c56ed0105b436d05b31137c383510. 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/TCADB1730291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b528fc860d822e9abdada7baf6a30d5d2f9c81f9b11a60369e597fb888bf1be. 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/TCADB1732356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbf9d98681da96b2ad025d3ab53adc9101e04b28ab73dc3172296f194038174. 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/TCADB1731600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03dc879431a39270e0ab986658985326f9d3cf1fee93e942b274ba04970dc5f7. 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/TCAFI2175683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd15b2a79fbaefb4f34b6ab82f3c140fe56250dd09eaef971284c56a16f6c78. 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/QM6P41750798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe514442581e7a3eecf4ddc52d727eff781753a4e5ff660088b95901c450abd1c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QM6P41750805.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch