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 0xc4618b67bb3dd9e44b6814c663c1f1eb7deac4105cf1af53c7cbd1a6df7e8f2c. 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/6d9ac162-a0eb-4de7-bcd3-7ba271c05bd9.json and https://artists.proofprofile.net/proofs/artist/6d9ac162-a0eb-4de7-bcd3-7ba271c05bd9.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 0xf0448e9210ac803fb76600a93f51b236e4fea1beee46091c8b2ee2369af88980. 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/QM4TX2541236.
Titanium - Auckland Spark Arena 2024 Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e97ba169ef8349219e4d3fd1c3e58d744ba21b0f4a0527c1b28c825a110b87. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QM4TX2541245.
Cafe Del Mar - Auckland Festival 2023 Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b499eb990134aecd6d8a407e1027cb966c11d9feaa068e9bbc37894364b962d. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QM4TX2541246.
Call On Me - Auckland Town Hall 2023 Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f58468c6a87088e92521e48b59efd6f6ff1e6f03499e82e11577dbb8f4889f. 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/QM4TX2541247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74145fd34c2468cda847e696fc6a5857ea0623211822b3dad6a68eb89da1126. 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/QM4TX2568725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70ef73bc2cdea5a87f2203b629dc40d8a6218e60aeb864a7261a82d13bbbec6. 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/QM4TX2541228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c0d676810a6c4663dae1b7ae35db0ec753cf5995dd848423764eba919eaac9. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM6P42504524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c0d676810a6c4663dae1b7ae35db0ec753cf5995dd848423764eba919eaac9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM6P42504524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1e7a2cac15e9fe489dcfd7ed6f0eb95bf79e1e65aa160a81780a1a582c5cb7. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QM6P42504736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27036ced5e0d604d82c2d87257365c15fdaf808d84d414c657f57d9e6ac7b55b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM6P42504750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c7181d30e7b4d4fd749b3568da33dc3af9712bb26c071922c7d9a2f78bd919. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:00:23Z), 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/QM6P42504751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255a200a03d5f73cf30f0210d68d945574571a6001bbab0fa908d2508a2c400e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T08:25:10Z), 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/QM6P42504755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b41649419a9a289eb53d4c6d51347cccdaa59d21f236f9a29bbff94abccf9a. 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/QM6P42504757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf748e59c93d21c3cf0d34759cc56e8136b1bb76af02779c7d70f84017cc26a9. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QMDA72521562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd660700ec29bc3d63797749da0763ef58e2b7d98784784cea0158842269ac04c. 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/QMDA72521848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd660700ec29bc3d63797749da0763ef58e2b7d98784784cea0158842269ac04c. 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/QMDA72521848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48365911c53d62ae40bfcd7eaa25f6b805a800b33c46025c5559c04ab4ddf98. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:51:57Z), 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/QMDA72521805.