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 0xc473781ccbe17a3469c86ce20baaeb5e800d90f1c516e525ea4ec12587e9fcbb. 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/815ff1ff-5896-45b9-8f4b-374bb2a209a5.json and https://artists.proofprofile.net/proofs/artist/815ff1ff-5896-45b9-8f4b-374bb2a209a5.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 0xb2148c649fdb3abe3623f7b06bd015caad5bf797c6b47d7d379c19b8e3df370a. 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/GBPQM1301401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7f4815a67790ef1a4081ce0ee7b04a991c28fe34722a0e811a293078171f6c. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBPQM1301403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e75eb68c57e7693c2c34bf9ffe3f5167331cfb86c77dce260bb5efbcb3da2d. 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/GBPQM1301405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02430cc9528c7214d4f254e782f749c7d746c356f4c3f8120dabc9ef64e7271. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:55:50Z), 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/GBPQM1301406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bc895ff7fd2a5ba3f42d21bc2778b3a444ccc7fbb9fe84f89c138aaf41d940. 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/GBPQM1301409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bce4fffcc14f593f3aa924c176eb06269a80a5a0ec3b4d257d946a10585edc2. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:53:22Z), 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/GBPQM1301410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80fa56da2ed6b98d4b75ad7494da37e79093a1e179a249782d98ad300c3be96. 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/GBPQM1301412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0081c4600595007ab6951b70d0746a0026db3842afb2cfa49de47a9b8e08faef. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GBPQM1301413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4975da81e6c745a4cadeed55cd500d50b4e78285221dc6f7d600a339a9c47932. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBPQM1301414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0a17a313d8fce0a2f65d3e533b41f2564080de79e5e4e40522a6168830b4ab. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/IEDXX1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e70f4840c68cb5d9319fea784cf98671057f9956cc76f3b84c01bb9fe97de8. 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/USHM21141133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4995e2da75135fb5c892d43a0ee2ab9829de21fab4791d321f2e4819db642593. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/USHM21141138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68eb4f4bddb8d0cf16684dc093bc438e691e10bb08c5a4eb82f53dcb321fd814. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:43:45Z), 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/USHM21141139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d408c39074a0c891a64a5567621e895df2ebfaf2e1fd36cb2e46493f859fe60. 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/USHM21141142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06901f0edce0c20d3a83c1de8fe1770af476d6f6a057be3fc98c6d3de87e0889. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:04:07Z), 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/USHM21141143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cc17ca6f04dab9e4c347ec83222669d3f2f1d3b5821802b425b6bda5f09537. 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/USHM21141144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c93b4440ae060d0a85affabf1dfc6d8651ec4323c72588973b1019b909661db. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:09:36Z), 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/USCGH1203742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15316ec211f083893fa60acad7b3c068d652022693f713a42bb42574b96b9019. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USCGH1203747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2766121f70c48d5726f61e469633c1b4f8f729a23a4b196ad22165ea8a9445a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USCGH1203748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcffad08e7a7504070176da8bc45a1f48c6eedf50490d9f1f5a03342a45194a2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USX9P1142076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01341726e5f9b724587fc8c69d5b627a1937d14798734ba47e14a7d843eca41a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:58:07Z), 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/USX9P1142084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e46900bd8a593e8f729026b5597ccefd6068e7cf5153d456845f1aa292cb61. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USX9P1142091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094abb3870baf4305f380c53c404eebde7b70b37f949788fbff2469d9d0dc871. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/IEDXX1300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87962fb1dcb209cee9783dfb46f21fee03fa36edcafd05cb9926bd8a0a5fc3d. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GMBA21480019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af5620df5b8b3ad96e77c47aa47c8ef27d6860a4a028ab99a9f878caaa27698. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GBFU71502049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48bb73d555f06539a47dac727865dffddbc3be936185c4ce6b7efd32e7013a5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:03:34Z), 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/GBFU71502059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d969f89b26626b49d616ca46913279a04c978198344d60ea2083395575c603d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:48:22Z), 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/GBFU71502061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6317086129c4897edb13b495c2d9f71fcd620833562f1b2f3638625154ce2b2b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBFU71502075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d64ba16ba4f8355fd30928aeda5fa4d4b5bb529cb644a72493fe48244d8385. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBFU71502098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed23376cde420269e7c321f9aec4104c5e2f5d9894685aed217be06f3c777d0e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBFU71502102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf555e477ca7f8cd2afff8868eeb18455cf6668f1bd4306fdd84be8375e8354. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBFU71502087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4117d372d854bb4399fd37ad2f42838dcd5213fe87df9d1caa1362e30cdf71e3. 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/GBFU71502089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17e55fb7a1b554b8ec652e6f84734dec982bf7505818d6641fb7fdfd54dda1d. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/USCGJ2176580.