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 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 0x8577e54d3a429284ff0a0f4b5643c8c6a434149a39fba0aad6d64cdba6cdef48. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba9a643a-d597-4d58-ad63-dd57c04c8dc2.json and https://artists.proofprofile.net/proofs/artist/ba9a643a-d597-4d58-ad63-dd57c04c8dc2.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 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 0xa6eff7cd3c0e9721fb483fabc4923a45b081f1b1c1feb83b91145bfcea85ec86. 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/BXN6V2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddac4263e93eb5bc929079f8217fc6dbc4f810e41b48d172cfac19057a85697e. 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/BXN6V1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd34491ba4f064be8ea682d8bd9497c2ee78d1485e514b0964b781f311d8e3f. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BXN6V1900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9031ec16c86832cab463359520916c5f5f13e71fa625a846e04f4ce6afa1b3ac. 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/BXN6V1900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fd4a38f5e05f418a4a404f4b1c0746e31d1e89d935736a2f0ebebf357378b7. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BXN6V1900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b49f69748113e47bc08b8d98cd70488e0f52320a21453364c4cf0f40284db37. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBLFP2366470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e3016cd08bee282d9efd53bf4dc88043e01ef985e20d40efb2afbda671313a. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBLFP2366471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a0ff1b5f83e2860bfdeb86d09629970547ec8f4f41354f5488a12487b9f94e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZW9L2265671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc156961367f9dce980c36567bf16f2253f3f7ba0809f499a49cbd87390d83e74. 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/QZW9L2266752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26121b5d244902fd67d0e398e66dde26d3d4ff105de09641694aab98c83869bf. 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/GBLFP2366475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc4ad2100036c431fa3d1cbe03e2eae6545202f366bc7778406965b09911e50. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBLFP2366478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918dd8aa6188966522fb9b290ad39153b2e42a9c882ff9b6dc7b7cbe41417e0a. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBLFP2366479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaca4cf8bb72a25405e8df7ad4994116da09e60273f66957b13ff46ab4934ef6. 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/QZW9L2266753.
Swear I Saw Ghosts (Feat. Laura Padaratz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473a1a70cc8080683e3be48979474f17217010623c343fe719ccaece3cccdc9d. 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/BX6IQ2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab860afcdcd0957bf1369828e6eddf2cd2238599d681e0836f744ef9220e431b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZFYZ2044738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b59803e35cf593a420a8fb0992f8c3fd2c1ee74f343865f2b1754cb5bb7f0d. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZFYZ2044739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9807aa3b563e77a10dc34c892da4c85772ca243d2b0d33e7f8f6ab109575fffd. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZFYZ2044740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7bd3e57e2480d9da1be7c31827db2344c9ffe0e0ebb48e09915838abd40803. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZFYZ2044741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2627787967ad63bc674b1a2f6ec26278c8f987740cbb53771759649d76dd2264. 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/QZFYZ2044742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c704cae6a4a0722dc97b66458138d0a12fafaad6024a7b70280ccceec4825d. 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/BX6IQ2400078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764e878be1cf77d3e4708e0fd5ea1118378214b28b21ac00183107513812c14d. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BX6IQ2400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1d7ca0896ed9be197cd7de6fffa09203207c3782374a1631d043caef501c54. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BX6IQ2400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6ac557dda9838e31fb9569f811eef83a88f7dd2d5604d1f19c04f2bf6fc721. 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/BX6IQ2400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef8f12baee8b199ba90b41e01a6eeea29748a677a3b8a7784611fbe360d14b7. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/BX6IQ2400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c704cae6a4a0722dc97b66458138d0a12fafaad6024a7b70280ccceec4825d. 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/BX6IQ2400078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764e878be1cf77d3e4708e0fd5ea1118378214b28b21ac00183107513812c14d. 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/BX6IQ2400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304e5e409b6f24b674d7a027596331ab63e4f08b104df87d086833b24b527c0e. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/BX6IQ2400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046aca9337f44ea62e6cd2641d9ffa33ce74d8ce3a990c08b230b82e02ae7d33. 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/BX6IQ2400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4964dadb876844aa65152c313f3e98b12a9878ed0482c05104f01f927c025fa7. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BX6IQ2400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f79dd16969bd8e16e4f8de01fc94067ab2ee1c9cc10bb74abc944e91130d34e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BX6IQ2400089.
Driveways to the Sun: At The Green Flash
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa579b9b86110371a252f9b5801aab9b2d062afe6ab49adf8100cb21f4d9377a2. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/BX6IQ2400229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c25bcb4940f97882b97ee70813b05e99f5244deabd09bee9eb76d772c454c19. 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/BX6IQ2400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa579b9b86110371a252f9b5801aab9b2d062afe6ab49adf8100cb21f4d9377a2. 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/BX6IQ2400229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9017808f892c350584b101409e486ab0fccaedc5a8c145e939b211776f6b878e. 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/USLZJ1991800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56601683da3b574155db3fcd655759f6e07b9b3e87bc3ee8f8f9799c5fa1b454. 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/USLZJ1991804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac3878e134a010244f154139e0c66fa0a94917dafac31e430fe6e07b56b34f8. 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/QZDA61969020.