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 0x8c35ee68e0df1a52cef6c81b4f3eb1ccaae393e1a3656382794f7bbc2f1a7651. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/88ab9a33-0c73-4081-a485-47a5eea95854.json and https://artists.proofprofile.net/proofs/artist/88ab9a33-0c73-4081-a485-47a5eea95854.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 0xff33e3306ca3cac3808a5d27def87cddb3700763d7678cdf21d30046257ae2ce. 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/DGA062371338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45c38e943cd7deeca98dc96f7987492d0e100422d4178f383ec427b87e83260. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/DGA062371339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85095e62424124f5aea7f79d71bee338599d1f912bf9bd566f52e8c1fd4d9879. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DGA062371341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7fa6c09c5145de4458f91a24410947bfa71721961cb9c8d20aca7a2b0272a6. 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/DGA062371344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b503e819abd0f2e25eab0928d6774137432e0e94814010fadfc69bd84b6d4d. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/DGA062371345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd27fea2ea6f53bdacb566dfc2fb828d44abb399009c7f170106fc13fda9322. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZK6K2134046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb69b028b85b7335a508a4fb98a9bff82a1ed5764daaef0fa9f43b94ecaefcc6. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZK6K2134047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f347179d6169cfea92dd4caa0d2b6be35bbcc235a372e781233e0abf1f7485c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:31:52Z), 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/QZK6K2134048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8d2e40f0d9b9c84cbccd38c567dfa737741c311e657379e517a89534a01501. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:56:00Z), 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/QZFYZ2072748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4e72fafb5979824c88d7c1df3f5f0feef28f4a25a35a7f5d2b36d33227b9d6. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FRX282202469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a04df0ba46f9300500675fb401d865dc9c50bc3b209e9da8de1e4cb1534ca1. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZFYZ2072753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc23ca7b53e092cef60b2f21e8eb4006084e2f707b70059c4c7c35b3d1751199. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYZ2072755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9112cd5c003a272f24f4df3ef1b418774b2188bbff51462d3219793e6aa1dd5c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:31:47Z), 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/QZFYZ2072762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e547f8bc3d065ede77e3eebeb8dda61a90f5fd76ce03b0e4c439e2fec3905d9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRX282202470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c907b06c3e495c88eeb67465c09ede95d3732b5c548258efb96dd9f5f3153ee. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX282202471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbebbf96911ac1c21c9b24129c2735dc0d4e153c5ff4985259814a44e2b3441. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZFYZ2072766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ff62d632c4153da3f2a203d70ec72caa171c5e3db110b93275477d41539fe7. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZFYZ2072767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b94df424ad5a13a6c7c309eaa83b5aeb879b3fa6b0cb505cbc09366f7d391f. 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/FRX282202472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4ceffc824249a1d40321f0cbe794e16e541eb43ac700b945a3eda461aa3297. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFYZ2072770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf6ac46318559974c3256e8313dcc526c45366893db082fef12bc009e91e518. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FRX282202475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb8bcdb9d1690c78aa089ef91ee802815c407d27fb6b32dcccca7cd35636362. 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/DGA0P2320638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f0e93bc7dc28d9daced8b5e804f37b4471d762d42dbd31244ef3d19772cf43. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR96X2419289.