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 0x3f11f87ac4f826929e1edc1838149fb17602b3a649810b4f9ec20ce88839f121. 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/51cee8bb-b1cb-4121-96de-26e0fe9c15f2.json and https://artists.proofprofile.net/proofs/artist/51cee8bb-b1cb-4121-96de-26e0fe9c15f2.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 0x2d293ccc22273c3f5147e8274e89580427acfc364751ee78d604c96952a849f8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAN21700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1f3fd0ba20e917438bf977a13fa163f91475c215bfa0c17217482e2a747583. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USAN21500056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f8190bb19494045abc1357387a8af08e108e6c03d0526608633aca5800139f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAN21700041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18b62b4384c32a47f9cb4f621f3599045d04dcb070eed03d434ba0c568fa114. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USAN21500068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe587cb320532e496f0ee43b6c7df6eb2a46c5dfca34cc533dbc792194e2752ca. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAN21600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbed3ba4f6918b316058af54f6c3d79b1a71102866c2264362c85ae59a940708. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USAN21500064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5cb4f730ae8ef75e5ee7be68c8af5180461032c4b5e747b7c6f5321dee5625. 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/USAN21600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4efa5de5acc9532c8b82e3d3bedc34c554a24564cefe3e0591d0c6a8f373393. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAN21600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4673ed8eff06ff50327a646bc33da1dbff0325e57693b35b8098e539e6caec46. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAN21600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f06a66f2befbf73bb06c9f4e68c6b623ef3e8f1e5b23e3c7a5d1acaad89cd3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAN21700043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dfda308628cb4b5b6a1400fb00c898ec22b0fe9ce91c937c506c7d6322d0f5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAN21500069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846847c8a8547403a49241dd32a9c7234a42c52233517caf2598e765ffe2b926. 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/QZA7T1700230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e90b6455f7b0dd5c08a892a2e45414c81f3e32eea9541bc69fc3880f6e3d40. 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/QZA7T1700179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6282bb57e5886f711991b422389848292f3714d292ad5a0dc9e035d79974186. 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/QZA7T1700194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759f0c07c99b1f9e722e13a2d3953ae344fb4644de49bf0b8e6ef344abc50c76. 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/QZA7T1700188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0def29785515a95a17591c0f846b2a213a7c973da45aeee8ba660ee04c951d23. 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/QZA7T1700192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8720b6102b6e39e5048f587ffe23abfbc04df2601ec7b293d09544728b179210. 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/QZA7T1700193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd85260ef202ca37cbc4cbe57fc5840c96975b8295b088222d2c346c1683512b. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZA7T1700191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e90b6455f7b0dd5c08a892a2e45414c81f3e32eea9541bc69fc3880f6e3d40. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZA7T1700179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7483933567f9a76f3b401dc4a2e23cff9627325e03d0775893a019282100cab. 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/TCAGE2204717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000f4b0a88b371b1edbfb493b5a48950cd62f7782efaec5f07f86140a7b6e602. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAN21900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85346c81ae8f814fbbc654d061936423d1ff8fbb26c57a8ff5db1d6a4651a491. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAN21900052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36614d12355be0dba54e30cd733c1ec9be45181cc5ab063728cdeb1c896ef2cd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAN21900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2502051f2c507c76fe737dc7bf25e4767402d9de7a48190e27739e7f496b5c3b. 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/USAN21900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d775d7919619e09ab733b7ce42532fedb2b994b3ebb1dc7a4b28913f031604d. 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/USAN22000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544d9fb001e628af94757e75d8c53d0edeb3c49c53ba2f56a62021fdb6ee456d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USAN21900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79dc57726fc8faae06c31a68de99b6ea666a57dc3bf3e49361aca6b4aa3a8f4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USAN21800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd350f140a81298d3a8f0631dae1a3185c919f7d6c3c765a69291f6fc555a133. 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/USAN21700060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1b36eb2df86588df50d24e118c0e9d84cbb6ab1c7c1f4ff0f1415a6101bcaf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMRSZ2101146.