{"copyright_id":"0xe1d981e886fa51bc9db786aa6170fef92d56ea5619ade080dcfa8fcb79be457c","name":"DV With The Hanafuda","registered_at":"2026-06-14T12:43:42Z","symbol":"NIM0456649","token_address":"0xf1cb04eef9a22357d86f6e93da77017e18fbf5e5","type":"artist","uuid":"4ebcdcb7-4fda-4e37-b8cf-afc10c02124d"}
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 0xe1d981e886fa51bc9db786aa6170fef92d56ea5619ade080dcfa8fcb79be457c. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ebcdcb7-4fda-4e37-b8cf-afc10c02124d.json and https://artists.proofprofile.net/proofs/artist/4ebcdcb7-4fda-4e37-b8cf-afc10c02124d.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 0xa29ddd2a8cf622e9fc68238fea362e78b152b0099d53965add43023cf7b53ee3. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZK6Q2124242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae78f6a44622de83782a255cde47694d242a9248738472660357cadfad4ef7cf. 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/QZTBD2365900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc894d37584a4c6655d390a91481c0972f825abba895084893e65cf07e1dfb22. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZWFQ2372309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d4abbf990830cedc5d7e9251532d5be79209c0e5d23347dd12fb0d0f33e70d. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZHNA2428168.