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 0xa7ea0ddf3ff4377813b95b872bc8d18c3180b39ed216e63db765dd3150cc0042. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba49df3f-4e9d-45e7-ba47-a8d9af30a16a.json and https://artists.proofprofile.net/proofs/artist/ba49df3f-4e9d-45e7-ba47-a8d9af30a16a.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 0xfad984c4dda9ddbe1081c8e0971cd0762cd31ebea83937db2363d846ffa6acf0. 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/QMFMG2370329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf536447bc348babb5fb3512004c6f3bf4181e10e4ab42c879abb45da84a3d61a. 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/INJ442100152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8d2b844fb99c1db3b7aba670628b9b8f1d1f1db0123f20269d58cbe4896748. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA052444427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5d24784e00c9fabe0de8426f15ba5398fc2cf975012ef84f8ccb88150c428b. 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/TCAII2468407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897fa36b1fe73bc9b2d2f935f82fc0cc81c43c371600e1e3c079488451972d5b. 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/TCAII2451161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5b17a61fda88f2983c1d10c1b6a0f7f764b82e64ec51b2d337a8e408fe4e9e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX762488168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7810c4aa381ee860fa169776dfb092cf05845265d3305e155c71cbe9d9306c. 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/TCAIF2415597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c4710bd1390660ef18260a43da555ffcd46caf866a5544a781b16fba1d57ea. 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/INU252413726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd143bbd5c5b0433708dbecc337e9454f6506e08a8d462c883ca2be174751ea7d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR2X42495768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282d7e1fc1aafa50de038cc7e20a7a32a55ea63c316b4bda160b2f0fa475bc73. 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/FR96X2431478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf15b7bcb3fe187b4408b33a317d464e1acb6c2daef851b7487f209e3be98c4. 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/FR10S2461791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28f59787b46d0cd7cb47049a2342434fbf6e0a1e307040c4ba955fd365adc9e. 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/ZA41S2405408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb816e97d611249fd153a6a140c17bc84058b50c64d905f6c0035603dafb203c6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA0P2332207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77e80e48244d9ec4a6971137d9d7ead5da38b2bc9e654412d9bd9f319d2f63a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA092396563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4384902353593c636e17841c9bd6241e7fc104190b1833fc7ed392cac7a745d3. 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/DGA0H2301715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84b43f9c6450c9e98a4dc24e71b3813be0308255eaf721e6caed648195ad7c5. 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/ZA41S2304036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527882b70086fd551c9fa322908b9aaffa5407b260820ea854b35d2acdec8421. 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/DGA0M2316189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d94829250789364faffd08347a9042b64c321587faec1d516acbef33d68b582. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKJ8H2307814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e873186472142dafa0f44215ea8d2d00508fc483bca5012d557eb1b1bbc49bc. 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/DGA092361994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbf7d46aaca37c52a643f23ee31c9390e71976b9b3d54a270d7d635ca2cbf5e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DGA092318197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103de2142523639dbc7f17fd3f2192b8354a6d8c1acce873baf0d174a0a0c88b. 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/DGA082354695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8d02b635855a352a875909cc7bf8235e18daeec2ab29635b89c3f0e3191e2b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKJ8H2306171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df5e6ca9559e3f9100242200d9e39c77d61b85c9ed8293349909f1550f69f0b. 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/INS182301739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5992dda76f1d9517ee68eb9b8c02869f139a5e5449ae7420c8d5e683b28eabc3. 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/DGA072362027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f991a55fea8ef1dfca77ce51a48fcaf5efec60da48dec29b8c4ef5cc8fbd49a. 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/FRX872393478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89b4b6c4c617564be4600ca334fa701f544e1313254cafdb4b419a9658c0baf. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/UKJ8H2303449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ce830675472e2ac116e22cf18142cc8fb0d6a595cd5dca126e7b65a4416718. 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/UKJ8H2302124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57804ef245d0f2b638115fb864a58dab5a5abb32ecb8bd4c27118fbcbebf802. 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/FR2X42351397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c49226ed699bfbb78ba4ef18ef8813564ee4c4128d0ad6431da591eca22983. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA082265072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc74936ffcfe3c036b382416186b03e4eb5a2e168201c18c40e7b558984b68e9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX452211964.