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 0xc912dec2465a7c587e3dda7be8ef96b72aaeaecf9c27b47f1198b97f5a5d92be. 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/ac864dbd-38df-4ced-b4a5-319e32a368c5.json and https://artists.proofprofile.net/proofs/artist/ac864dbd-38df-4ced-b4a5-319e32a368c5.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 0x851269978cc49fd988de236e3895db2614f40f185e61cf45d7ed49ba1d089623. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/FR59R1884136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74446b1a69701f7305b95745342bc81ad78f320f805b21f6ece99581db9af8f0. 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/FR59R1884137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca123932ab98da7ab7387918dda4dff0599d6d689f1e18944f717e163346ab7. 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/FR59R1884141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6239fb60d55e1f86093f245e73c5c3354a02d04ecbbde5771eeda9f422e990bb. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T23:02:14Z), 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/FR59R1884142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4ebce5d34fb6f548e47a79007c551182b03b0f6e6a9c99ca16970123f85914. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:42:08Z), 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/FR59R1884143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503423cf340801a674c85be966a8506b40c82d41bc39f20cf0e93ef22f79d5ab. 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/TCADD1741196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9212707d8c6b118f6bb709198b54c16519a3a05767ea6f213e1902193352ca78. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:54:50Z), 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/FR10S1980426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3080b425527152a47e340ebccd0111fd58500f16920f5842dea5ab86b2f148d. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:43:25Z), 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/TCAEM1986377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fd1a8b59734b2d8b21aed8b6d078cf5a918c4c41eddb32500966bf59c5a296. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/TCAEM1986384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4ae682a322d1ea99aa057e9a9829dacc54049cbec96cb55c545db0895407d9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAEM1986394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21fb6e7caaa86f24d200b69b613280bf9b4e4c4192966a7d4909e3adf357dc5. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/FRX282283903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce99384cfeb9cc41393c0851e3879bcead6475b9536cc33b739329e24734954. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:03:53Z), 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/DGA052445585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70ba3bf98dc4d2f8ef0b9148557ef812228c41b275fa66b21fd06c048c22626. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:09:02Z), 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/DGA052445590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8b0e6081cfcb758a50297f59613b608687fcdd4862db8d6160a610fe4d2ba5. 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/DGA052445592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ef2404e2e080b00eb58f76758ca6f552affb6fd718233d029638eeee9cd2bd. 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/DGA052445593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3954584050bb767443d37fb666db1a70b0014001f58838d58fb5937762fd8983. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/RUAGT2502198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7f0aa6285e2fc8487ff71dc89a6ecf652b386c54ed0d0ec134ab4008e77821. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:28:43Z), 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/RUAGT2556708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd469997c34d89636d3235ea0b3912efdf56ed20fa6880eff94dd695325c64fd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX872200615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bc679e5c626b9dd67982de9571842f90d026e29918f19226dac4f0e0542e51. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:53:47Z), 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/TCACS1642622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973768dff9cf8909d9a485f83063cc65554341a82ffba0b5dec1a44906771847. 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/UMA864772600.