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 0xae0d33197d8c8bceb0174384ce083a3e3f8c7ad3e7b257bb9f1eca7257951e3c. 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/adf77f79-1aac-4eda-a662-9d181bde9c7d.json and https://artists.proofprofile.net/proofs/artist/adf77f79-1aac-4eda-a662-9d181bde9c7d.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 0x6f6cf9c3d7cb19391250a5839e41899d6e85a64bab960a720c7fb97486b39d96. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/GXF9Q2448734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc5b426e08c8ce47854fb7ad3727556bb85346a39c2876503ddfb6e93c01246. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:21:53Z), 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/GXF9Q2448723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d6d5184bd682c1986ac0b46bdb31db06d263aac998e2ef7d1bbbc8f06b8caa. 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/GXF9Q2448725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09ce2539d330192ac62d00b03268a06a68d28ebf034c85bfd03d493d79c323e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:36:43Z), 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/GXF9Q2448726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c12ba229425b90d49680b677d3e9657a5a184d25b83200e4edbfaac49b726cf. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:28:48Z), 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/GXF9Q2448728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb24e6eede41e06d543699fbad3d51d8a3c840f47cc4820546d975459d0e7ad. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GXF9Q2448729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34aaa90fe5092cc90f4be4868aa6383f246bcf7c3347ae1dfb646a06b0a34428. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:30:42Z), 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/GXF9Q2448730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5120f1fc6d4336b7502b6c30dde0dc332b5483956089570d8ae73c60c53302b4. 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/GXF9Q2448731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24933d1520e2cb08829457602c1df1277f01ad480acb1b2696c8ae760c866886. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GXF9Q2448732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a70b548d068a2666eff0d1cbfc7f3eb64eac28357c33b831657f3ceb82bbdc. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:16:16Z), 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/UKXN22578874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd362137e55739f32db6db7774e11b1f2344f629d2a29a1a9313e383aa5d69bf5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UKXN22578875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eee02842e13ba0429e082744ab29a8f39963aa13dfaf1609270000b0c529c85. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/UKXN22578879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83749d29ade70c51b2d246b4e6f2b223ae44dd57ad7a887698f26c59554bdb4. 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/UKXN22578880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec994b47c423f8e5ac18ba9160dcb07b87789c5c9233ef98d08f85fe7b19f82. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/UKXN22578884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374a24d78000c6abfd96bd186ba496625de522051f4ed8b04b97fcc45dd9e86b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:03:35Z), 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/UKXN22578885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341543be9bf3b60c877f5c9b8b2c04e15dd202ebc15f63429473a1e21cf57b7e. 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/UKXN22578886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fe1da7b11a09e803ebcdbc4279b4b111dbdc807f41900983f60f7884fb5e2a. 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/UKXN22578887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1545db4b85b28d7f80c6e8afff08098589c3136c0584cc232b481de0d0ea9bc5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UKXN22578888.