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 0xa6fc40f2acdd64b6c9da81508e41a7c957970da60b09de0d767254bef48006a3. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74dfe612-5b6d-4278-a349-be8c56283d7a.json and https://artists.proofprofile.net/proofs/artist/74dfe612-5b6d-4278-a349-be8c56283d7a.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 0xedd31d72af53b882a30f8d788b8a753e68d5797eb9fdafbeddd0056cf883c6ce. 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/JP92N2458051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda35c7e2656da7789f159126a561ed359a37873183b42161dec3a4d78a3c5831. 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/JP92N2510316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78368a86134f13b3913d8f62d09c90c2b152594ef02469d0f65d8f562aae921. 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/JP92N2510317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82a42786d0e4e7afac8370dfd6a0b766a5fdf6b7a419b2bf07a3c105445c1b5. 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/JP92N2510318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7f5370baa8432ddea85793dc04b1d52761362263ac600577f230542809380d. 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/JP92N2510319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b8ede0d60f0ca39e7ff95764a8ee8043c4cb47127753d23d2d1a97f4d723d7. 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/JP92N2510320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65aecaefe03c52289646b3929db5b4fe297072e92fa065958fe6a320aa25f928. 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/JP92N2510321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9629c02086e7d0d5ca4adadb0ba255664b94481b1b3caba98990585d233453ab. 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/JP92N2510322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd946754239530d40c4fdaeedf27e05d7111da0a60011ff74b3b1cc781a5d5061. 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/JP92N2510323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c58d85aaac5d6ef5ebb4fea4ae512bb7abe913f43aa7fc970c8171967dbf87e. 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/JP92N2510324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e9df843aa73fcc82ca939ae37cfa493b30cd67a9dd600a81a62f520e14cd33. 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/JP92N2510325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464bf5f9aaba8e61c4abb444ae9b4fe65a5d47e4e969e394e2731e1944e5795e. 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/JP92N2510326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6431948563f1594cc39b7b1b12efc99be07888dd8a92c6f3729cfcba8f586c54. 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/JP92N2510327.