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 0xce34e75b0648ef43009f932ed33a463f7f079febb164447a98ca49453866023f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/476502df-a393-4a58-bebe-bcfd0ca38abd.json and https://artists.proofprofile.net/proofs/artist/476502df-a393-4a58-bebe-bcfd0ca38abd.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 0x9125b8e11727698460ab4d9ec15dc1dc7a5c1078c9e579c4e920ae09b310a91f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/IDA742200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d796d1a97968f8178a964977d726add098a0198d000b4db2b7015d84ef716bd. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IDA192203792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a7d71438fbe0a57e9da0597f61cad9639d2a4e16b53325558666974b7ca03e. 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/IDA742200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68fe93412d8904215e787c718ab97d4a8ba9bd360182190db85b274e39a2b96. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:46:39Z), 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/IDA742200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a7760826c99846cc61663bdaf10b9b229ab62b307f91c61c39edcc59b87ad1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/IDA742200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b83e3a7be29fbf58d78541c89cfcccc9ceb71369be619a26939f4c83fca176. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNW72264835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7c028e781ff92c628dcbd0e981bd57ffe391455c056d3d8d498e1b49fd6801. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:02:04Z), 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/QZNW72264836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c556f3316b5a176ad77a505018c783db5067bc4155f5daef04441fa6432a7de. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:46:32Z), 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/IDA742300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84db839c4277c8019ca29915691c36a0414a818dd7050213f957e414f3be6112. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/IDA742300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bfd6e2811d63d784db1c2f3558d1e6327097bc33ac4a059edc574ecd961a93. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWBE2342740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e9ff6aa7a058c776a14089f4631a432aec0668a21289985bc53f65c56e90e6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/IDA742300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefef640091dc374c0b861da918d2009a5dff81667d3684c97aeb1c142e79de1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IDA742300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33a15db4a55113c50ed7f12acb1622548030a1da095003218c65e2b41bc44df. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:26:02Z), 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/IDA742300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a940ffdf8fae66090679b46524e93c39e8d78394a4ed36b40ae95efa433d3c2. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:03:52Z), 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/IDA742300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b24d5ae2a89402c48b9ee9f575f79869f9483943df5810ae138188f3bd8696. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IDA742300126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f50af509d90fc389105f26802d5a13d32747e80a842498fa6e2882a19178fa8. 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/IDA742300132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25771b1c2b6dc20889e6c612fb9ec9f3ee8bc7640c8f07804a83ac5a40fec96b. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/IDA422300448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bfe50ebc7e8825a594de5b32c4a9f062ba3c70ec9a791b3ffdcbc9bde939c9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IDA742300178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd834ff78ffa534b63c52fd098aedb924e79376c6143dcab2756940a7d27318b4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/IDA742300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654c36b30843410354bf72a66502dbef5428d9277b2d046c3bbb6075cf928c1c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/IDA742400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4159568b623e54ff57f2ffcb802fe9d09124ea8cbca287fa14ba8288e61c614d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IDA742400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b2a7a2e21ecc9dfac6c35807cb829acbe7774916d0c15c029cdef4f85ce613. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:23:39Z), 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/IDA742400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae928e2f5ab814e155b730c4dba46c0abb1198d1730161f382b0d0f6dd575c8d. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/FR10S2561704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa317e1d3ddbf9b94b940a31a08d80dcc3877405cda27da7ae144bf10ac832ba9. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FR2X42547818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783e87a67b3d2170cdb9fcbea6151e31587ab2fc0bc111cc787423e40353c4fa. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/IDA832501303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895fe6ba922e61bac85510ad5798a0414c9d080017c72b7506c14c13044568d7. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FRX202525716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7415ab5b1e9670dbe2f93cb707804deae85d5900a7911e745edcd1adcfad8c3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX282545083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8adbbe7ad12772a323d81017f54a67201a8cbafcbd13d30e5e077af52742dcd. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:35:31Z), 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/QT5M22569256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c4adc66d318b6ef84699725cb2e3ce6ca849c2577e74884367f7a03371039e. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/DGA052503355.