{"copyright_id":"0x24f64a3cead641dbd461b7784fc90abfb1df4d03fe1cee10d70c3070b874ea14","name":"Acoustic Guitar by William King","registered_at":"2026-06-14T20:53:25Z","symbol":"NIM0573445","token_address":"0x046a8cb2fd02e8f09ec9d22172f46699a8c2ead6","type":"artist","uuid":"9c40d0fe-0e63-45ee-ac1b-85ef6cdebaa9"}
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 0x24f64a3cead641dbd461b7784fc90abfb1df4d03fe1cee10d70c3070b874ea14. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c40d0fe-0e63-45ee-ac1b-85ef6cdebaa9.json and https://artists.proofprofile.net/proofs/artist/9c40d0fe-0e63-45ee-ac1b-85ef6cdebaa9.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 0x5e959b9512527eec884fd69b3227f4477115d923dc376405bbcd52b0afb9191b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDA52368073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520046f0ec4cccdf88aa8523c4286e2f8f2dde3e47f09394d49145a49d2b1fb9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:23:33Z), 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/QZES52302362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56f689474111834500ad664a4dcbc7a27443df75d6c2bdc7be94d9872283260. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:18:35Z), 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/QZK6J2310491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c88044ce81889718e2eabeb1d705e6d7be450e7b331fa73d7912f138f3a318. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZMEM2330719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bf8667388aae294058316565ffe2669b4369b2d144108f2a4642a3acfa6cdd. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-21T17:25:12Z), 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/QZTAY2361474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4651298dae818745604bf48c92e97fa190484377097aee45a8aa40b43636699c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:49:16Z), 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/QZTB82432823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084a3c1be080a9847d70572cccf0bc919e0707ae1f9a74073153ca0a23abb366. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZWFF2483168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f88cade012a71e8e767d11ea1cdc09cf1f5919480d681cd82121c675e0e1147. 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/FR10S2535263.