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 0xae33dda08e49fcc007a1fee1ec3bd06ca71654df76bf7810bd52fd295bf3752d. 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/f4277927-c2fa-4d64-bd6f-e69cb8c0a0d8.json and https://artists.proofprofile.net/proofs/artist/f4277927-c2fa-4d64-bd6f-e69cb8c0a0d8.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 0xa9f926536ccf49c9dff3b1226f3e04428798b63c069d4552088d6ffcdb0669f9. 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/QZES52083727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb03516f25adda954c0d2d8354cbd0e04f86c26f9e74934bbc0ae960d0f57d14. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA82034654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740e31c93483aebea7d2bb484dc41a2223a8f17fd9bf66d3de58cf4f80d6d881. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZDA82043478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2975de05a5e396715adb698fe7ccb679d9bda9eb3fe9cbcaabb9ca0a66a809c3. 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/GBLFP2046101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd50f517f926ac73da04c7d72f563a938a7aed242329eeedc0357ad78edcecd4. 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/QZNWR2156912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd079b2965a8b534b0ce6060084915f447ebe091b553ac56efdb9aaa3766801ae. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMDA62188634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7534aab901ac0518e9ed86534b70a7dcdce7cd509e71370d6a1c7d188cbdcc0. 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/QMDA72151788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd22dcadb929dded6fdc30ed1bb2426105245a593da7c2f867bbc53e37b482c1. 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/QZHZ52259573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda06c7a4786a10ba00faf82a18a163d1f95280324affa39676c06c0883917be8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM6MZ2225613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825a6fba1a3f345f061be30eeb4c5ed66c4c50db0a270a359ade9eaee2d374c8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMDA62210640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d24a6cf1e1a453be15023fceb2d6bd9dc03a0945b0a764614e134e042b14574. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:44:02Z), 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/DGA062317964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036b53750265c7ee352138bf60b369b2cf952631d6c3ed1121e22323d5f49972. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QM6P42495067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f88f315d97ae88fa1c0cbece65fc890f36a8edd6f638a6a921b8a079098564. 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/QM7282435891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5808adeac7d6c3506238b5d8690c90367d94f80cb2aeb815d911be05568b8351. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM7282467559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036b53750265c7ee352138bf60b369b2cf952631d6c3ed1121e22323d5f49972. 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/QM6P42495067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f88f315d97ae88fa1c0cbece65fc890f36a8edd6f638a6a921b8a079098564. 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/QM7282435891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5808adeac7d6c3506238b5d8690c90367d94f80cb2aeb815d911be05568b8351. 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/QM7282467559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f71005c3d58c8f035efa17a060dea9dc3aeacd6a87eb66ad8cac5f54c748e9. 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/QMBZ92470025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5aafb5ad09090de07368c02345a3325dafa435d640c8b5b846ffd44ce2b9b2. 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/QMBZ92470029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907cf826e6f1df87262f28529113e67e5dfd594b8598ff7274c57279e809afb1. 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/QMBZ92470030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cae9df2391fdfaa6200beb5fb9c77e17194fa99a2f5e0f5584cf13aed25f8d. 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/QMBZ92470034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519dd4ec49db9ff90eb5d77d281cb2c2b9e7137863f8b9bbcb5aa83e8c8c6b96. 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/QMBZ92470035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16418517573262cf7328b049844a4dcd1e25ace40683d33b1f86f83a3f180d8. 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/QMBZ92470036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507316e17f06580c2ac4dad5f4ea3bf19b980b859da813b6e6bf623a02d453d2. 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/QMBZ92470037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0221ee0dc95c5bb15fc2679b8b13ad4d021f1830ea74acc1686bdff512c2851. 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/QZES92066270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcc6388e425fdf9c6559e5831dbcaadf0d20d223a3dd89d2f878f50f5244a76. 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/QZK6L2069391.
CUICA (feat. Marko Italia, Best, AnthonySly)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a10ba4b8ac0750743e19d839f71e3ba706dc15ec0be6063b5cfd18eb62cbc5d. 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/CLEM42100876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8701ea1cf443093b618917ce40f328af5994a7466bcb1131484d8e9eba2daf. 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/USUYG1175846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9379a84faa42c282a40d1b8ee47098ee53d5bdb54a36f5f718ff202807b258. 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/QM6N22484461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe347f127c19b3e4437d930bc30f35691d05ad6b460c234a953b1fdf440cdda9. 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/QM6N22484454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c408997966a4597ee4e9675c1bd910bce60e4a8c57252798ad69fbeec2fa037. 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/QM6N22484440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7b4427fd456bc25ff4ab838495fcc3673d2f9ddb511bfe17b6d85967c878ff. 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/QM6N22484450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ef9ef0c9e8105c374dd84d7291bda3a9bd2ff495b6775aa35cd8c9da5723f2. 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/QM6N22484458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6050a3ff3552959a5c2ab14d2b7bfa8b9daaaa16a50673f89afe35179d9d6111. 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/QM6N22484453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147eee8ef935389bb8a96b7a5c6f4b6426e60a3c94b11432e6fb6cd0671f2956. 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/QM6N22484448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6b0b6788c61b938cc8aa644bb10e8d6265515a38b28f2e9409b8a01856ea91. 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/QM6N22484435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0ec03e3f78f7aa689bc66f6e19736af91d4f2837634190ed81545a78cf4ee3. 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/QM6N22484459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1483731adb5fa83edb2e1b91cabd04e9d0dd1e6276718df474d51ac5d19314f8. 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/QM6N22484480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7eda71046d159e76667861089819b5fb09adcb298bae033eee8c18f9c2ca94b. 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/QM6N22484460.