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 0xf44bfce092823c8d281d6ba9c470748b5b3277ec447534ea7cff3ade72d97c0b. 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/7c11ab60-7fbb-4ab3-b588-9560441da609.json and https://artists.proofprofile.net/proofs/artist/7c11ab60-7fbb-4ab3-b588-9560441da609.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 0xca50e97c20d02cf1116671d4471b06747be29fdcdf6e5c25bcf54a60d5417d8d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USSD12000466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada2b2d207288bdd2b33a73c6108316c431bf988f6811ede412d5ac939be8e14. 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/USSD12000601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10acbe7644074102df7ae3a38f3f9a18fdb0e82afda934f016738c6589987113. 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/USSD12100350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98da5eb804748e2d7db4ae31d1881de08f8699058dbd0e756155280252d2e050. 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/USSD12200884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57ee8ecf16de64ad8ba27b3a8d1ac24248d3ecde9c22fa5b5f1acc53363d82a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USSD12100787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86752782e4d25b8cbcd3dab1d1bce816f4c771c8d8f795ae198b9708a7d43d31. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USSD12200457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f52500b05ac43b3adab521e8cfada25b82feaa73221ffb1ab64f0919bd8fbe. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USSD12200860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98721ab3eb69ba141012e6c892b70d1056df2af78948146358cfd11364e0cdc0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USSD12200881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2466dc32b99bf6e545147331be02f3b0604bc10620d16a8c50f69d1f826a49c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USSD12200861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9bf19662a2fab8d6642fea4f30cd6d6b546f7e4a2b735624edad6a1a693627. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USSD12200883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a8205932434ea3ffd2c31c39878202974e280175d77675419cd2ba7707dec4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USSD12200882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada2b2d207288bdd2b33a73c6108316c431bf988f6811ede412d5ac939be8e14. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USSD12000601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca50e97c20d02cf1116671d4471b06747be29fdcdf6e5c25bcf54a60d5417d8d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USSD12000466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b43574a80f8735fc900595bc34410ac6404f041f6f8ba8306ebf39481988e96. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USSD12000076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3884b99a8f00231f009145074a685f4dbb940cac92df79ad9ef3ce162a73e9de. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZZ662340770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a010759160714c4a16e073910b7556070abd1a3aca9d017d74f056c5ea6fa5. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USUYG1572721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a55638585dcaacc0a71d457cbe105bb99b65cbb32b86a71b0ff975573d98568. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QMFMF2521802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17af47627cd118f65989dcd9a9679dea9a4bc8877456351f9a5305c5122361cb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MXF152100507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0b52692204320c80198f9d363434ebed384f84ca12822c81fb69cd720224ee. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ESA011661859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc806111748a26bc04958d592e6d3dd65746d942a20836058192b2bbb607be001. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZK6Q2379149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71be3c8fbd1c323696467898c300d652691cfe7d86ee11b42d0f6a7c1de4f004. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/COAF42391013.