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 0x2f91a4990685ffa7eb826445ce35a84a3a68970e6f07e8c9d2ce0f3da8b591bb. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/641739c3-d4f8-4446-a562-e37aa5f5d6d2.json and https://artists.proofprofile.net/proofs/artist/641739c3-d4f8-4446-a562-e37aa5f5d6d2.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 0x8554aacd220162f38817ec0f3b42e7fb0a3ab94bfe84d3746996aefbbcdb89cd. 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/QMDA62480978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45e3d2f7c3fd868c27b92cbf22a2987beabd0c1512e9ff92b37d75621233d14. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QMFME2460350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f191d850934a2fdc44be6d74ed0907d5ca6e070badc414ba5361d8cfec6cee. 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/QMDA72407725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3d303cae17a1051791386628674b881daed180c1ef3174c881bfb018138651. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMDA62491459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233c795398e50ecb67e43f42e672da8eec65171ca0072afd9ed78496f8a86656. 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/QMDA72411200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9ea9ad89e48eabe49a75174d20075c03c3dc4b18585aa5ec4aaa5dabdd0a98. 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/QMDA72498182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbda18fe4eadc15c1d5de9217c728c31be25afeaeabdb79791cfd35d4bd4f18. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:37:26Z), 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/QMDA72498150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50eb4d8eed24bac882ddf67d5d9e36b2c63d5a73d8f89e8cec619fe241ab2e11. 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/QM4TW2507968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4441ca72ec209ca105da64292c7da99b271320c694a25d1f4d55e545979258. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QMDA62494631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a4a74f24e4027f8d6d5d16a746b76729644a079fd6b00e0cd507111582d466. 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/QMDA62485832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd2396d2e8173dc1ac6396371137b33867b9a3943bd2e5edd4b08db50216ef0. 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/QMFMF2418935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66eaf6a121a0b41193262e28ba14974cf0eea4dd6b5930f0968a11fbf15c8095. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMDA72428777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1377af33e833ad2af7e641197100eeb0307ba726884308309fcff118b9f30b1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMDA62496769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf677db2a26315d01651a3e00c53434eb01a333679bf18eba00b87be945e306de. 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/QMDA62489563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e4ab5d6e27d06810f4f553ee8626337af39e173f80bfdc220bccf6365fc938. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QMFMF2435899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f566c9eebdfe6ba50aad3fd226235977296d563d961a30eb8bbdde5226db974. 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/QM4TX2549398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235d15827d9463bc63a5289b6a7b3ef0992d78f1fc5833cb9fb00a5640f01481. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QM6N22510464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6419bef3439ad3da252a837792316aace4a029d7df5fe1b381c7ba9b7157a3. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QMBZ92572757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a400634a664f693cb3a9c6a01d9a6d1b0f4d951bd19c94d5c6fcbc034212c6. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:35:29Z), 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/QMDA62562122.