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 0xadc06ea3bd596febdbc88b8f6fd2bc22a6246c3f521c45f1e8f32e5581df87ce. Chain 2 (Bitcoin): anchored in block 953780 (2026-06-15T12:02:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d45d84e1-fc33-454c-b074-d1bf73d9d3da.json and https://artists.proofprofile.net/proofs/artist/d45d84e1-fc33-454c-b074-d1bf73d9d3da.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 0xfdbc353a63aad345e730abb5c995f51d4810b24c7c2d99d040005ed5c44cd37f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHNB2398353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e623d8f717ff4f35564668e68ee0cb576e65b1ea55e3e62d6d5ae370e3c5a2. 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/QZRP52291015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fd6bf47e5edc55ca169c2ba52d9330a3cdf6d0442b4cd52357dc1b775c960e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHNB2398354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1223c97b17b6fa70543daa88ce5fac76cd15a4c980b37a905f9b74e5e0cc8110. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN72353992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2633e604164ce66d351072e5f3d0adf954819815d52693106faaa6a1d56b15. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHNB2398356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca4044a57967bbc1660a434a0bc268b66aca2a0e729c9feb911411cf1f8fdad. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFYY2359292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ca9a32a5563c574de9481621df074916478215d407b79a7ed1f9ae8a13afe7. 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/QZFZ72343224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa753bb32b45a101a3ad3d547be58992a8062217341a500f313d3cc26d3ba5d6e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHNB2398357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf07413bab5084733d64b41c10394e62fd38962f7d844e3df84f47b99c83074. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHNB2398358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1223c97b17b6fa70543daa88ce5fac76cd15a4c980b37a905f9b74e5e0cc8110. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHN72353992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9825d05a46488468379468ffbfae534d4516612e976b23f10a0d1b9b60e52676. 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/TWJK12200093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20c3f2ea77cde13cabc65599a3a303ba4478663bc0a98415e7050f2a9307865. 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/TWJK12200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3eac590747856f7d598522981b438acd0acade36dee77181ba17db7f395827. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TWJK12200095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d0c4d8adc6e66ba91809952cc680c1c691acef170663a7669c93af730ffa9d. 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/TWJK12200096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3d629022123019bd9d72844020ccb85535743fb45a55f0c50e5f5dfba89112. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TWJK12200097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd014169a4153a2133adbf100fb9b2a0a043c4793801a1bcdc5701090639db763. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TWJK12200098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80605609f752eddd2477bce3e8da9482a07d1cd16bfb9e461b50f29f3f77492f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWJK12200099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdc500f7ef0911fc722912b51278ddc1d47a3f1852d082f7a226a041f4f5580. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TWJK12200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97e14ce1a3e1f350b5e810f990c6c0f855059ce69633721c078b15a649f7610. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TWJK12200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f69b4381656274e996acbc13422660e5630893569a3ad280f98bdbd04979a5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TWJK12200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd459db49cff6de3b1c5f0f10c7f38e52abc3166ecd28b897a391312fde32d6a4. 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/TWJK12200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb966d3c576d15662c6df4a19376e67cccf4c6fb5cfcb77f975e69c6157d0c38. 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/QZTB32409630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3790add25dc8ba08a69c44a408d9fa34cd0ea347951fcc04027d2b9dc39f4a37. 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/QZPLS2435817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e623d8f717ff4f35564668e68ee0cb576e65b1ea55e3e62d6d5ae370e3c5a2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZRP52291015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee850f6589fa86309d3505c47c837500fe47a34a99b5273e5bff1e87ad5f9c2. 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/QZNWV2280333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151309e015ad323b2ffdb0308342c49b8ca65405336b8fe8a5bc4618e3bb48fc. 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/TWCT52434966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7440784fd85232b8159f86d24026df98b69b046f7addeeff34e418c3d2ef2f6d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWCT52434968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca11b111c0b6fad9a563b14eeaf180dfd689f1677ac233ea5373d4255e61d95. 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/TWCT52434970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815589da5f34e270a98b9e295a2a9846c669cbbf003dc8e2cc9c15bab2c67074. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TWCT52434972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb09a05811e1fa36efcf71361d50cf44d7199432824d83ef052ffd59049d01c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TWCC32413032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6322317108bad197fbf8e47bf0ca71188d1b088d65f8e649038dfcf65998b3. 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/FRX202049308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd531ad549b4ceede83a5ab70ff499de301c7906a9527208e6310a62929802c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX202049316.