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 0x14b1198ea0fe9f317c3129608ba9d535cfbc7c3dabdcb0570d2d4855473772b1. 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/6aaca61b-2150-4266-99f4-757353b48342.json and https://artists.proofprofile.net/proofs/artist/6aaca61b-2150-4266-99f4-757353b48342.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 0xb6209dad583506883a2ab5586c994647b151ae92feeb4b3b587c10a5646378bb. 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/QZNWS2426659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d34b9f5488770fb4661ffa4ac70e6b4051f01a04f52ec406ded7d7fa487d1d0. 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/QZDA52441722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d0cdeed01d03188b9660784c960149aaf799146cd032b1607c72dd22d61f3a. 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/QZES72413906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3d59ee2696c24aa27c72c15e410063f1fd56bbff701dc8c5079f91690c62e8. 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/QZES82492741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6850123153b34981cec7df4ccd95a50a69f748bac17e9dbc8aecfa852e5a5e8e. 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/QZES92472403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd811d29193ded97252b9eb2c1aeb67e9a2e3769e8e3bedde9190909d084fa42. 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/QZTBD2322073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d34b9f5488770fb4661ffa4ac70e6b4051f01a04f52ec406ded7d7fa487d1d0. 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/QZDA52441722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b22cb671a2414ec1c51da168d33c8e5c4b5c1f510b5b5313f4c93ab94ea6266. 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/QZFZ42457911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd811d29193ded97252b9eb2c1aeb67e9a2e3769e8e3bedde9190909d084fa42. 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/QZTBD2322073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c982cd316cf069af6597901705993eb35715d5539e9aa012bfa243c822b6c10. 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/QZTB82331522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ce82f8f5ec10c4d9c6effbba2f590ec6632f41cc6ae7a3023d128fc77e9cb8. 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/QZTB72223845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9fdbced6a2a92943f54ffe3ab45d5ae92f378274c899143090128b71f3f8f3. 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/QZHN52297308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4e95c5aadd274e5d52b34a48fed14774110afffe382901fa7c6f7c92413d00. 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/QZK6F2114370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737171956a7b5a86f0237c7b8a6c4876c02b294e98ec060bd0d702546b1deeaf. 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/QZHN52297309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7c2f4758c15705a96a2b2d95e3352b13e17c266fcee459536ef28e4d49d952. 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/QZHN52297312.