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 0xf1dec7411201036ea547d2c8ce7533f6de856e98511c970a3f1cb7a3c604fe10. 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/ac00e417-e14d-480d-95b6-345b0a7e3c53.json and https://artists.proofprofile.net/proofs/artist/ac00e417-e14d-480d-95b6-345b0a7e3c53.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 0x9e2ea50f5769516ad1f4b70e7043f036441a31c97131fe7527796d4ce4fd0acf. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/USHM21729234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90462883b005633eb5acd70a6c95246c09bc1725fa79e6d6400ac1ed70982d8. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/USHM21729236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d3ca85bbe697a00d23ad9beed2bb8964a567ba065c6656f61b3eceb5c75586. 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/USHM21729237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ef3e33ffb4140f8f8d827f71ff7431cc90f09c3c1a27b8890d2ce509adf576. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM21729239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b848b3cc1b2569cd410f190bc288dda85a15ce3d4f668ed20a65be3d0b11b3. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USCGH2023365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590245999e2b7b49dc82ea95a76e0bed19976142a415d3bbabb0813e476c5b18. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USCGJ2015442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85031a50de11ddff1ccf6307e9be6d55e5e396357ef2ca0f94792b31602cf0f. 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/USHM82095247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ce85395ff7e7c7585ee48a762228f9685960e9f08c664125ff6b83e805f51c. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/USHM82095248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edec9ff98c182d178cf8caf865c025f73850eb643ffea4b6d083c1514d8d474. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/USHM82095249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb972a0c5ebdb723a03658dc23887ca17cd54a9b46eda3c9bd0ea2f5d972a81a0. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QM6N22345356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866807b58c4d5e2f8369d40dd40b74cd4f5d74870c46a7bc932ad549089adcc2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM6N22345479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10371b0fbda3ae983e1c8fb115092bd9f90ee41a63643c3a545491f6998608c9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ8A2419142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775318bafd598b157dd3f56ac2c47bc5977ea3f8a0651e7cea5a9b960cf6554f. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/USHM22190487.
It's Not a Fashion Statement, It's a Deathwish (feat. Outwaves)
Three Cheers for Sweet Revenge: An Encore
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda725257909fc05217e119f9e159a6b2f62f235223d408b041b8759d0ac1e98e. 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/QMMUK1800129.