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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbe580090fc37aca2790ec9e7527cda4c1d2171122985209621640b0e420e06. 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/68294128-638c-4274-b663-afa572c76b97.json and https://artists.proofprofile.net/proofs/artist/68294128-638c-4274-b663-afa572c76b97.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5b8a02f3db8eb464ba3cb345ba2a3fc19319837fc8ca7ea24f68356f80eb35. 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/GBRKQ2449179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aae8444feac4d1d7b39265b4e2a9375b67d9422b2cb7d776e2ee5694957b6bb. 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/GBRKQ2449194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec0bc298c8dc9d6d0d119a4d1337553e20fafc9232600eb9428adef4a8a4be6. 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/GBRKQ2452040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee3264a4be25bd534f6210d32ddd1fa72c2e8a5d327eeff3cc4361f6e7e6d73. 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/QZ5FN2389345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a33e8b2961018541db86c108211a7549330ded3b2dffbfbeda06853f56ac97e. 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/QZ5FN2389357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a9c409ec3da9f9cd838928e6f55f92edf508df267ad96db8ada58e1efe20fa. 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/QZ5FN2389363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48401027110a6b62b7c9171d3e7770b36716a9045b4f1edad11eb64814379e13. 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/ZA56E2304164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f39ca6946cbf8bf7977415a53988af11b1d2c0dede5c865fbc1b4636f52c4d. 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/QZWDE2358187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19625dcb48c5a1cea453cf2c171f6ad512c22e664891979f2244ec64ad658d59. 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/QZZEB2315552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aab30f05657489d2e419772d1d32da003a0a081402223334ebed2e3ad5650e3. 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/QZWDE2490448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b3043ce1d10a739bfdf3d754dac7a804ec9cedc4700f1ee65d6fca92b47fe7. 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/QZWDE2358197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54543df8e24725b74b283e3653cadd31a83f70ab218a1fffbf4987f435fb2eb. 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/QZZEB2315556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098ebfb861eccbefc5b234a93b5c52bd2df8551b2f138511d2b70fa6838e0bdc. 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/QZWV32476315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ceaeeca1e99ca8fbea4c5cae7678b7c9b3edac4c373b820331f616bf34f00b. 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/QZWDE2358198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6a23152763c1dd1cda1e2b5ef53ab1eaae7cbb5b575527394f3acb5ef252ee. 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/QZWV32478037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0aaad9694191946edcb171558da5398f60e3d16ece03a61ab6b0664b87c4f5. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZWV32476310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc260132984d3a1249fcd4a5eeaf41cbc309a616c02c9d6de4f7783348c63b209. 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/QZWDE2358221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e10a982bfbe0e86d5f92ea70f0e2265f5559c5dfa8da362d7b4a56808dee7a3. 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/QZWV32435146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d32c6cfbb2aaed24a93dfd337e04566118e6f1528792155cbd91d70caccea8. 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/QZZEB2315558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9db5401c498d388cc378b9d51d6d9c9b09a2d6936df4dcce60cb1c4d85647b. 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/QZZEB2315572.
Groove On Class Of 2024 ( Selectors, Vol. 1 )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d8c024306137f83c59fc4e38dbe3ef4c9f3506059f5c9975c42b5d18fa1aa9. 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/ZAM142400471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd5c9dd1a1517583a386851df5f662fc4184f42fb892b8af96320c2fed9256c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ZAM142400473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02333208c952f44199d35970ffa3bddc49833a989baa22e2c28f306825e54267. 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/ZAM142400474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918e4eea7b6ed8944ec6938aadf0d81f493c9eb6f0a5ab6d1503a42a64505bc3. 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/ZAM142400477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae8d305b8f4e774f00c365169cb4fcada23441f5bc8e1676bcd04dcf6c5b8ae. 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/ZAM142400483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b6add97a8015d01910c9fc53217f1abd97fd755cc55c35796713ca4b995db3. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:10:59Z), 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/ZAM142400485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891604d36027cb9c376f1209c6b134312e5b441d1048ba9211948688bc38bfec. 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/USLZJ2306655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2453ac076eeb149cef1b777d47c51278568fde50d040f090a9122f24df353fc. 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/USLZJ2306725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928d5e024978c7acd30635a24dbf2a7750fd234a3c68d8f8de43c726ecf2fc7d. 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/USLZJ2306804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df7f30344d3c05d8cf38d086ecc8313e226fbe702894a81e18bfa78c64c3fd1. 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/GBKQU2353163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd07b0f48370a3fd1844c74350cfd4721478d99eab259d8bc0a02685f07349f. 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/GBKQU2353165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffe740ed41e9a984f4143502aa09dbdb3599e93e6b081b6d642180bba175587. 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/ZA56E2420100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9a3aada56df681cd8b0f71215660c439c826ecd2989f7643165b5dce3cdac4. 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/ZA56E2420102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2942bf60f88e8b0ed64ed9504ee6c207e5019a9a9509d5381ba0d8df5a46cdd7. 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/ZA56E2420105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d9a3e9d86603233477467d7a3c9fe8039247185154ecf0a1e1a3b081c5da4d. 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/TCAFQ2142650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e9bfbc77c4f0394087216a2fca3a1b59949ea4b23f85fc026ad93b7ca9ff54. 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/DEY472472151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb37408d3e70ba13a2a32587c156a8b1509221221435fdd51d276b92245073a. 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/DEY472472154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3febb73a7e9e6ef583171eda07f73d9d4a527cc2124e623e3481c11f1842af. 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/DEH742405311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa213a0635050be0135739cc3f32b085ac9106dc99cd1a5a99f32135987a432a8. 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/DEH742405315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8656f9057ba96dcfa8e63c72ea68b06f099add3a9da74030e948859130a077. 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/DEH742405318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc831ec7bde50b793084491ceab30133165d035a417f64d12dc0aad4bd3a7c093. 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/DEY472473732.