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 0x1542ab5c32b97d81001c967cd8292879e0b23aef66a6b071c567cdf9a1700612. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ffb008c7-15ce-4c8d-abb4-37f3d7e76080.json and https://artists.proofprofile.net/proofs/artist/ffb008c7-15ce-4c8d-abb4-37f3d7e76080.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 0xf25e8e3fd909824792b33bceac2c0b8e71b0c928d09656149605b4d88747b122. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZMEM2236732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e722b1aca3b87e1219e66abed6e6e50b4ce834c654623cb0b0421543fc7092. 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/QZMEM2236739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ce557cc1b6c0f527436cbb618473694495b68e9832bb49d7b8769e4254383d. 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/QZMEM2236733.
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 0x0cbd6f3a874580d221bd8510608f61ef1a50e09f88c4293873f43f1f46095863. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZMEM2236734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac2763ff969fb58e1bd4383effa4f53fa0be614d25ece5c36a5d51034e106d9. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZMEM2236735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c635a9f9a508d215af363b1d3e5b551c409633605f7a631e4e261557eabf7bb. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZMEM2236736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb213d5bd745dd38b9ed24b2b9ab506de6ec9b63665629fb227c18ca95b064e. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZMEM2236737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0038040379e936e2292d316e8aa40b6058e722e4496093404ac34232670714. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZMEM2236738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fc83ade94a270433bf5072869d20046edae435a46bc905c64c824920d39cd4. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/QZMEM2236740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56364c29ecca6f5396e6da0000b29fa43e4974990a227b3c2fb455d1f199c0e. 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/QZMEM2236741.
Light On Light - Seraph Mix by Gordon Young
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4512af343ee4dd074ee78f28912472d40bf547d85c90534d3c56ca7f10fc6b. 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/QZNWV2374555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a4f57e0465a097c25824743db6e60c5d12961f61f10468c218b9a731b39cca. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZNWV2374554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a14ad14346a21bffe622ce7a9836ef075c51632dda6f7cc27d891ad5cd4a74. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:05:01Z), 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/QZHN81994311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce03fd04782b42966a3cd92e835c3d92ee2a437fa8f658cf13dd2b1d07f18bb. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZHN81994312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93501dbfa88e2cd63115ca80ac301015b52573fa21c0b652016289a0640e6dc1. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QZHN81994313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0eb8caf8b41217c8491ca404361f62531b6a19c5e318eff5b19f9c206dc327e. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZHN81994314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3893435b72b665497db57bae53849c7fdbfa76f981d7b51593fd3e456dfd4fa1. 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/QZDA71865657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1310977de94c5e0b2ad85472fac2b1b23e260c0d63ff0497a3e3024b5156279f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDA71865658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0179359995ffd09ed5d258c71c23959066d1b0212a0187ce8ec906e160379bad. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:10:06Z), 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/QZDA71865659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360f522834be92198b9fdc1fd02d5c07cc91fd00275b48aa1be42911f61c878a. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QZDA71865660.