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 0x8b334265fd21d16809a98bce4163d86e400bf374f0b90d3ba270e4206948c8f5. 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/c10d295f-6fa8-4523-95f7-41653bdb8ad1.json and https://artists.proofprofile.net/proofs/artist/c10d295f-6fa8-4523-95f7-41653bdb8ad1.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 0xdb13d08bb72a97a09ffa77afdc53aaf4791fdb7ba01df50d9ff630d30be015cc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USY282006918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d38100365b1d8cbf70f5ea964468ecf5c4ae6ddbcbca096730d1955bdebca2c. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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/USY282006914.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13431f74f1e876b495d53c0b5e35deb7bd47fef132c31b63880cc7b69927608d. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USY282006916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b0d80278e2b52aa192308ce56e13753dfc917eef4d87f65be13619e0b43ca9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USY282006917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f5be1a5e9568dd8482050ee62a2731e88ea7c46856dc6719d1b0a21d762f12. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USY282006919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960d668a9e125d48c034d43415737cf5e02374e20cadaf0f878d5e344a247683. 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/QZPYN2387448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2c80b13c8bbb49d8f6c94564381398d0b9de44c701ddb90cb699a8c39c492e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZPYN2387452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c7f95279affa456d44468327eb668e284e7dea489ac9261dcf3f0065902a13. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZPYN2387445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78165ca534a0a047886d659dea50271ae56050ba18c20a0c8ac33a590a7ba98a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZPYN2387446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed5326eac980396a53b496b127fabd455aec17b2a76574e13e3d330e4dd80a4. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZPYN2387449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cb9e34bd4255f32112779c5f218dd0e365054871b4ad84b5530a7935b64b64. 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/QZPYN2202290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcb895b9bd5b6e289f9134f48caa91c407d18ae73bc61fbcf9c2833e67e65fb. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QZPYN2206890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86eebf848d93327a2d2b560a8e184b5f9881904a0ebc1f27161df7be19592918. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZPYN2206892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fd1662f49cefc69bdc6e4077a2d6716cd60eca22666c9daf939c77fa425e44. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:06:01Z), 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/QZPYN2104425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572c436a9eaf2031fed1ddf0746251b0c2f994be0859075afba4dd9a4000823b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZPYN2104427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea03891bda8753e8b3a7d378063f485ece428e1e9322934fd32e3171fe6b735. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZPYN2104420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab6b8c061cff91760f1590e09698c68b732f8f05759488f1503d577a8df7e19. 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/USDY41753745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cac1feeb1de7d0e40eff04541c953435d938550eec51f528453bc153b8aae8. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USDY41753749.
When I See Your Eyes (Rasta Nah Joke Riddim)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa406784a5c4e4dc663ad4975890ad7865c32484bce05b43d295d167757f41d3a. 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/QZPYN2362408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fef056945824e7fe4e1ae50138659864ba46e3cf55ce3fef1f752568c88cefc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMGD72101012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fa8a0a5a0778e1237942b30d4e4766c70078a5fdba86e44932bfd3caf7b043. 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/USCGH2232812.