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 0xc0705f866cea9d475384efd687a0b2b134d3d5380d6697d64be347311d43382f. 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/86958d12-7be9-4a77-a773-ef6d5a6b3289.json and https://artists.proofprofile.net/proofs/artist/86958d12-7be9-4a77-a773-ef6d5a6b3289.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 0x63b5a9f1ea86f12ba5dbc6a26a99ba69b82c6a93dd40b94a49558e898dd382b1. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:19:11Z), 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/QZWFF2324735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f476caead0a35543c5313311271b80011a1aa31c2d641bee9cb48c09c1cfdf. 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/QZFZ62479582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a815a688aa40ac53544ba51255e5a46c34968b7572e8275f5b32fe5d07ab2c. 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/QZDA52447125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4abfd60421f8268bd87a85f196ef4e9db96cad7b22139e3f0a05597a274e74e. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:39:11Z), 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/QZDA82417515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e45d52a566b5c44129a5730d21cb9115865d7212be10649d1f98c67bc7edc8f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZES82451035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4ac7da58ebfbffc52af910ca0446dfde25a1186b05d38d79a6a26f525b1fdd. 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/QZHN82426518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2f851fe3a127c6c3e81d6eada545f2b74afd7696a04fbea2b5d75490f2841f. 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/QZHNB2443310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa061552c8f8a2fb2349a04900151024ab2743d6ea50c680b7791e20a669a8017. 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/QZHNB2443312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480090ee8cf797e1ff8aa8265208a6f9ac54971f6b69e24f1b178876afbfe743. 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/QZHNB2443313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36967c485016868a5f68d27162ecdb2cd2956d82460420e0c1fdaa809acfc66. 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/QZK6F2438295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128fbeadbd0fd33d40d26d8abed3a2e967245023fc1aac322f3050623e3f9a28. 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/QZNWU2433086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ee7856ed069cf554b446005b87fef4a1a6c3ea55b545c11e553c9fdf7f5e97. 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/QZNWY2499615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990c3b20d59fc27e5a792108ea8313e3d058fd54519a2746ae96f512935f4f23. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZTAZ2443000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f1d6c5e61a19ac6ad1d99032217bd3d13a02c3478a5f90b432fdff4c5110ea. 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/QZTB82438801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68929a3d00da5d63b8f28922b7884242bea9fec4d7c85aadf4b3724cffd3b6d7. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:09:45Z), 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/QZTBF2473054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d06ab18b6c9686c7b44e55cf8ab3ea0ddf911fe7836ff245b73babd3fd70880. 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/QZFZ22514831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe415dac5c1fc8fbef48639dff879ec8201fa6e7522181002f852d52e08d206af. 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/QZWFH2568850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec307880354b49ad1db048a12e089f71366d2aec1abad2685842056006008e6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZWFH2363731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb066881ef0fb0ddf7fbed8528771607d33f3225fccc1c213de629253195ed325. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMEQ2304943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a306f5b569715a61fdcaa2327ddc78bbb00810f07c7ea8080214eb1151a4f99. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZES62407661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050a144f476dec2ec7433850cfe5c6d83f74da77234493c7aac4b0606b02cb5f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFYY2432150.