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 0x9302dce66a36f09b1914e005f5e5cabcbe23a830c42a6d8fdd1bf015fceaee6d. 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/02cfa075-a8fb-4e83-9c26-05e0e12fa6f4.json and https://artists.proofprofile.net/proofs/artist/02cfa075-a8fb-4e83-9c26-05e0e12fa6f4.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 0x9c202678201311b42904051d50b8f4cf69542464d9696bf72be28777f09693e8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SE62M2287557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dcca06dc24013f8d73446939e6d3ae1a3fb43d2f947b85afafcd926aaad2f3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE66N2208868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3472d521918d9d99b037681ec090199fad50f3ae1254e28a8061fb892c41b725. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE6HN2406176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187af59e3e5db1e6db18ed3650cdf6f12d5cbc72f5af253262ff72c4dd551817. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE6HN2406177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe66c71ea5ddbe22b7e2d89a5abd3b3e690750a263c9667b498858c72267791. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/SE6HN2406178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3203e71a86491da65b6984c8459514ff8dd898f603285393c03ff4db36755997. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/SE6TI2356254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea2ddda2f336e9113bce4b93fddc0ed36f7aa7f31e7a43a5edab775a89a49df. 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/SE6XY2514446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468f2c58153d3e252a83c4ea2c75e589f05e4186188829f87374e2a53a74d782. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:09:53Z), 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/SE6XY2514257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffb874357d6b8672679ce70148043156638af0c2810c5c973a2bd1820a4b4ab. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SE6XY2514258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfd3beafa369f62941989d13e26bb49a72d23a1d87d265097ff78036e48b424. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:47:32Z), 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/SE6XY2514261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85399b5ac07f9fb6807d5b87f6280beaa865f307f818caf1aa2c80e5ce341756. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SE6XY2514264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994c6b558db776cca861c2365c0acc9c6f9e911cec13331f55e32e52c99b8b34. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SE6XY2514267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76197e4581ee518a08b9e6a56870241c89913b5958b9e0d21431c481d51e9d0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM6DC1688454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02580062b4c0bab8f4b9621349aac45d2114bf9c37f75eb3ad38adad67945b48. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZW9M2371916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d76d1fbe4e6702181a8e7f1ed8630e463525b8f08c3392da0df27081488ad0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZW9M2371919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840d5aaed9ce2a9d84ff93ec2587c9fef3638b3065d4a8520a549bfbfc01b84c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/US7VG2419766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5e0da90879438cdb2d27ccd602e9cb5e2c7fea35104df9909c1985be46c728. 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/US7VG2419768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29084573500db7fa2789a463d8ee08ffc4fe7dcfddc3ed965ded497100536b3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/US7VG2419771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44eecac8b950a72932103d98ddc39e1ee6ebfe80604b56ffe41db6b7d2c05f4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US7VG2419772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e99c640729547a0a0838757d0915b09dce1f2e911ce95e640af767ec1303dd0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US7VG2419775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547eff898f4bcf50c59b5267803549f0c182451413574fd42a7c8d905c99f8a4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US7VG2419773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4070936b02b6b8589657f2f9c0d8471caec4c04d14e902fde21687f9f1136983. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US7VG2419777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d7f6c20e1863895fe40940f2b2d09340d3d13f78911000939e5153f4cb860f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US7VG2424791.