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 0xdad98daa3de8896ed87517a30eab19d67bc592d7b0b48ecbce39bb91a7967934. 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/509c3975-a3ec-4102-ae6c-67a795252079.json and https://artists.proofprofile.net/proofs/artist/509c3975-a3ec-4102-ae6c-67a795252079.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 0x558b935f4ea89eddce61f37f7664f67c5cb5823cadbce3a2d8c7d2f3ff689501. 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/RSA141320456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9fc7cc6671250fa3eef873db59342354f9b05d60c4686279736a50cf78bfe4. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/RSA141320458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a43e2f00994d4a92b8f90735f137eb7126589aec7cb70359d07e6f50ddf44b3. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/RSA141320462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14227027b35967df1e6c669fa54a1683c431a0857427fb0fe9bd7383797d0dea. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/RSA141320565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333e34a7d30e028d41b7d467879cfe2e6f94eac3e2f5e4d1b097f0bd5feb3a87. 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/RSA141320569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f056b94fc609b2c59377dc186b467c3d05e77517e13f2861406e40aa322ab13. 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/RSA141320570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2e781a8072d12be88199fb068d2c70f64e6fc161dd2e644356579e0c52fc25. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RSA221817742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775eafd0fd990c35ee045a7ba8cc2d198e7f7bab7535958a895d48904295a672. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:08:37Z), 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/RSA221817748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712d3437d53b5a88cdb31b8003cd777d5c35a2202e7efb63444c0ee407d1fe45. 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/RSA221817752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d822baf69d09073f6fecb1c1cdc22cc2413665b2a7ac7e99125fadaaf8ef9e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:34Z), 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/RSA181344898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b31ef044012a703f902c819416a94e3af2e5c4776f00a41e107f1a512fa9e0. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/RSA181341446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f395101ad7b31d862b4015abacf5c83ee7ffada050786437d7ace800c94eab. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:33:29Z), 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/RSA181341866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c5cace55bb30069312c35a10286765e394695b5a56a697836f00b5c01e4e4b. 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/RSA181344053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16d45c416cd6e315e93f005a5f2248dd0799980fcd3a04261370fbc55d39949. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/RSA181344853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5863267819e864d4357765ff9a57288475e061e53339ff4fdaaef0752522a6c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RSA181344895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a806c4b700754af24d334ae8bee67a50bf7e4b4e74f8653b7b19a800e56ce0d. 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/RSA181344896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec333c9ded11d876a5e9d3c840241765e7a18728cc156bb9c6495658e8647e2. 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/RSA181344897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dcc2c29a56fc6207a51cd2c5be424bdee886142c33f20bb62f1cf5748b6324. 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/RSA182344204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8058e1b334b92a72a09b180ae0a68dd12c531e067bd0e0a754f66630a0f8e58a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/RSA182344213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bac30a3a35eda5a98808b37d3d1ca8101246c4ba18d876114e063b52a1a99df. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DEKB72503400.