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 0x7c83240d9d4ae5c0babfd0e2d65ef0a09ddf9f2ac7f12306cb8477ea8c4c1592. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ae65d29-9df2-492c-9e95-0e34e28e6f66.json and https://artists.proofprofile.net/proofs/artist/8ae65d29-9df2-492c-9e95-0e34e28e6f66.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 0x84af23eeeb99dd0c88a273e3b437c1da262b1e6821fa976e0ed2eb49fa5a0b59. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QMFMF2050587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18db1de78ca4d5bdd41fc897afa3ee3fd53600f914566c3ab3d96cbc73f702ee. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QM6MZ2118329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05a4b57f65d52c0f2096695e789aa4580300330cb7a645adf7ee45fb9c1e234. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USA2P2246804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda005dda5a26b47054ac522ca9f298c11d610c7a146700ac6123f4c28086c354. 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/QMBZ92034185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7c3df591e05ce65aff4ba64057958364342ce0856f82384dcbdacbef601de5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QMBZ92084267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b2a21f3314b9a37fc9e189032f137b58c5dd5836dcbb51b9fc205ac450dc74. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QMBZ92079666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84af23eeeb99dd0c88a273e3b437c1da262b1e6821fa976e0ed2eb49fa5a0b59. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QMFMF2050587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ef5a1b2f9382f0cc3b4495e81964326a531a164cd360d6772cc4545bb04b5e. 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/QMFMF2036884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63c744dd9f18bd40c2790e459d322d057d0359f8f5bd0ebee5fd9a6c84747e9. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:27:40Z), 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/QM6MZ2118324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff320505c36890f62e334d901bba5f346874407d0f6d599df5d0c9c58d5cbd1. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QM6MZ2127827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398d9d5a25b3d9ebca784687417adc3a14779ee2175ee1a66b2d5c6a850f22b1. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USUYG1579478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b74893ccae55faf8fc690c4e09ec988799118cf68b6f58ea26500d787cf705e. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/USUYG1566922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7658b32ec73e3181186f62c7ffdbce7e636ff5e60b2ba2742ef6d7d5ece45289. 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/USUYG1541190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb187e489b90a2101ac656754cddccf8a540f31517f9cff03dc65f08ecdcbd68. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USUYG1566923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4e1c12690ad37a77db2a26f5131caf89bb5cf32582f3ec161b9c32de252d5e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USUYG1566924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b7d0721358a2090546366ea55e6ed873e262656e8a362a4254d7d54b3c8215. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USUYG1566925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60416abb3a6d3a0a66944bcc4bfe700dbe8d45e1ecea83df35878f0543bcab88. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:51:13Z), 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/USUYG1566926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fb89956d2e253ca07db8364a5df727156ada2e4b4cd3973344cb55d84938dc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USUYG1566927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1ebd38ab45074400de99d842c557409e703290fed3d3165644001def3cd8d1. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/USUYG1594778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb473aa11cbe08639534e7ee6a176a02f159f634ce03f574b7a4b7540dc4b4593. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/USUYG1711731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0a08a802f7c37917c8ed497b9a2d50866c28081033f80d5c31b392ff8b2ffe. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USUYG1721621.