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 0xd88cbe5b4918a9533ce23230dccb9827457a5699c99a474379c7c75ff1aa89d2. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e6578cb-b5eb-4bb7-a1a7-ab06d307e494.json and https://artists.proofprofile.net/proofs/artist/9e6578cb-b5eb-4bb7-a1a7-ab06d307e494.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 0xa76f89d9b3e83bb3dfb05b9f4a8ba376d54f4d12e832f700803bdd9cd28bda89. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/AUV401100228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae40812fe4aeb66439fd9e7f3476e0eb70e98c76d456b02ae0b395555fc46a94. 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/AUV401100229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bdd41c3ae08266b3a10bbf29f616799ebe9f048698815fff6718ce92839688b. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/AUV401100230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3955c37be8aa0cd1660ebd5fc4c3ea464043ce808c2b4e87c5c95d37ccd16b28. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AUV401100231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5da0265567575c36e9681ebc6388e61965f4130d2b8825cf3fc89867a43d64. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/AUV401100233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545c73da8e6ce4a5acc5162606c8b2c3396e81341d4cc98d645d91da84854d5e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AUV401100234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed523e94b6aa83d0208189cd52714a9730790e15e94a59dde47eb147d645bd9. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:30:27Z), 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/AUV401100235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343dc6b990a83804ed41aae49afdbaf7c0c81eb2293767fd62a85946a11ece17. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AUV401100237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c15876eedf3f2bc229c80c5eee5b783c984de549a77a5c66fee8cd5673e708a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/AUV401100238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604b8ad0460049c00100bc69f44f5f0453b3c5afdce4377ffc492cc0bb41c4de. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:51:48Z), 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/AUV401100239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc545cdb2aacb78955887c36ff9e283ade289dee4a7e0961c6a38670aee94c32. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/AUV401100241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76f89d9b3e83bb3dfb05b9f4a8ba376d54f4d12e832f700803bdd9cd28bda89. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/AUV401100228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae40812fe4aeb66439fd9e7f3476e0eb70e98c76d456b02ae0b395555fc46a94. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:41:24Z), 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/AUV401100229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3955c37be8aa0cd1660ebd5fc4c3ea464043ce808c2b4e87c5c95d37ccd16b28. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AUV401100231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545c73da8e6ce4a5acc5162606c8b2c3396e81341d4cc98d645d91da84854d5e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AUV401100234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343dc6b990a83804ed41aae49afdbaf7c0c81eb2293767fd62a85946a11ece17. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AUV401100237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85be2b9e21fee2d59e4eba8180500336a0dd027a272b2785c0bc80c51a36260a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AUMEV2536647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1aaa22d27567b0bc9296e3ca8a7bbe20b25589d69e37f3d5f113e7def6cdc48. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/AUMEV2536649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74863b92bc8876985d7e1ef269d6c823dcc3499ec7b30f3a0ce5573c402881e. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/AUMEV2536718.