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 0x2a498698239ca79a2cfa26b3156fccba210540788166b24facad4ae04488b3e2. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee1eaa6e-229d-4af0-9494-2a714270616c.json and https://artists.proofprofile.net/proofs/artist/ee1eaa6e-229d-4af0-9494-2a714270616c.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 0x13bfff65738e01673c36f4bec9e4317fc13470ea67cba7619f4197c1a83470f2. 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/FR9W12335496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92070cbaddfb482f9d30702c8ec7e6af678201b95a262b4b32dc9e647b92458. 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/FR9W12335498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836827ba523d40c759275a2df78f24b2aa0b449627d7c502daec5841fb8dbfeb. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FR9W12335494.
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 0xdc49df414e791e4f36df2ed4a2aa06a6f9109b0205460b376fe87564dbd11a30. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FR9W12335495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0f73a7cc24186242b0c6dd2e832a1cca7acaa0e3bda3f91bde51bb6e0e7371. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/FR9W12335499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d8d6cbf584e8b76866577527ddd1bd075e96af12880dcb671e1b582ca1afff. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FR9W12335500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90bcce52c2c6bdad0423f7bf4ea1dfa25528dcb4e572841b627e319579c567e. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/FR9W12335501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa0a4062598212755f3e5474f04bbb6456c9f4e2435ec360a05d944d8167a21. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FR9W12335502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa6733993a1616e0dbdbd45b446d8847fbfd593cd4b3d12694d830db0b2c52c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:57:04Z), 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/CAAD20710803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5492a23f5f6fdf732fbe28e54043e247ce15d05ad85e188d051d95248d044d5d. 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/CAAD20710804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e689337f9af159ebf6e3c043d7eb1bed5fb98d050d399482a72ad64593237fe. 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/CAAD20710805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc764ff9a2e6385e053ffa1c82fc78a60e3ed0908cf271847e8eb84963217c162. 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/CAAD20710806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95dac60ef985f21c2ab8732c5d561848cc27b211350dff63d0d7b459a800e124. 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/CAAD20710807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fadb102b1987f776e8bfc929453565c1a4b55f7e23b9d8d720109eb9343b71. 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/CAAD20710808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56f2fc0fd3f7e0998a8868ad1e53577a9fd333d48ee558494d16dcf5b909a73. 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/CAAD20710809.
Cycles "Cyclic Law's 10th Year Anniversary Label Sampler"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332b168cdedecfed58b1f8bdf967653a5662240cad1b381cbcfb674815a4151b. 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/QMFMG1512602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb902bc925da11719001c61cc3a9f550722682ed9f7f10d24f48cbaad295b3eb. 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/QMFMG1512604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b4b64b9e1bfe82a9154c293cf5a70a64c081c36479925133b0cb3cc73c973e. 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/QMFMG1512605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d06afecbaa0427b127e06ee7ab6f17f053348a46c559462d988177ded97a4d9. 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/QMFMG1512607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e072feac2aacefa6fa3ea05bca17b680808fb6bf5f9dee9e234a81f9daf94a. 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/QMFMG1512608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9796383917c7b6fa4b9974d7b9997c81a5c073b4d8c917942305bd7bd0cc9622. 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/QMFMG1512611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b584b1facb6449516b2847919559462972ddac95ec082386c69abcd5b8a054. 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/QMFMG1512612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cf74a1d3e7f6d2bc7caafb501009cd0fd5d2a9399a614d7906f2bb887b8fff. 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/QMFMG1512613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc619beb24732dd37f3bf912a39d7d355ed516aab37392bba5049d1c49d968f53. 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/QMFMG1512615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c161f9919f2283a2f4c00d4ce73a698bf9c27869726f2d756c14ae2912f2fc8. 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/QMFMG1512620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad946b593eba2edbbc8bd904db3ab9acfab8632c219615a4c617d278e3f1a09. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QMFMG1512614.