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 0x10b4a80dd8a735845f8ecc6b25991a90e4eb574b05fc264d18e540ad34fde45f. 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/302e150d-7caa-46ee-8023-e123423a2e12.json and https://artists.proofprofile.net/proofs/artist/302e150d-7caa-46ee-8023-e123423a2e12.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 0xbb586e809e4fa606ca5d5fb5bb5635dc935a14d6449aa3064aff2f0cc78d4de0. 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/GBMA22152494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76122d535f821f0e5c21b5e0ff2844f345eda81f9c5ab36bfbab459546e8c7a8. 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/GBMA22184263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435c8a7685aad8eadba706e4f8a3412c8e0091a76015c29cea2610e68ccfdde1. 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/GBMA22184273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c5c9837f9ffa389c499aa86c7dd47fe9599e619920a161babca4d18a73e3b2. 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/GBMA22184276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26096fd265ba1dd8750da1d54eb4e58e563b14c8fc245b59ba6efc3a0a0e6a0b. 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/GBMA22181255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb53d27ffeb2cbe2507d7fe308d0f8a285064d261cc522838069eed53853b468. 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/GBMA22184305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e9058ba50cd99981e96cf1bef0a98691964a49d52c666ef2e00a59c70717a4. 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/GBMA22184309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c030ffb55dcdcd25b77353b5995be2961c04be46668e022fddbbcd773ce7927. 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/ES71G1602528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32061d7c2dd6adbdb21953d5a2dd6d37eb3f700825e17739cc35ece8ac9b07a6. 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/ES71G1602529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b76615f959fac96c477a5d668b96d97dc389518d3fa855ed4528d5f28ace0d5. 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/ES71G1602530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a81fd86307eecea5d96a20d6b20a321d6884d8bb63b575ce2a8731e634ffe2. 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/ES71G1602531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9857364b50dc4306447e34e3edd224d68ddf4d874966f63dba350567db70ef6. 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/ES71G1602532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95131f9b431086af5d276ccbc198741d2c811741789cc33e66723026ae5f637. 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/ES71G1602533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb211c8304e9369f9845c99f2a2139aea71866936fa5216212ac92a5b099ef449. 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/ES71G1602534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8132b1aabb7631d29736283fe09d4a4f955a08a30e55c1911363581a575bd8. 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/ES71G1602535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee890a9ae379904601391927c96608c58ae668dff0af8fb3acae4ecc70910fb2. 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/ES71G1602536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea4ffc26e7dfac251b5d3e83b63be6b42d3e9f29fa99b2f362eb3e8d114ff84. 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/ES71G1602537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c8cb7afcbf677046305b209f2437ffbf6450cd0fc5a760b297db61ce93298d. 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/ES71G1602538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fd2283923dd650aad88fcdd41d9d7222aa0640286847a1494c43c9feae57e0. 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/QMFMF2111236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea6d76aeab524e23041a4d4c00d3a3fc40bb1088ed0af6b45d4f1068d1c5dae. 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/ES71G1912281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca318b653fe5b71d93e2083c2192607ebbb6c512103017c5de7347a43216b6a1. 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/ES71G1606442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5335d90bf4477ab0b8a09e92782cd563066c98ed488d6661ab57263dcd4dcfbe. 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/ES5152200712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fd2283923dd650aad88fcdd41d9d7222aa0640286847a1494c43c9feae57e0. 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/QMFMF2111236.