{"copyright_id":"0x6e0761135be0a1dc2058e387b8fa07a0f7dcdbdaf92a6c9da24c3671afc43081","name":"Marek Grechuta i Anawa","registered_at":"2026-06-14T10:31:07Z","symbol":"NIM0425031","token_address":"0x57ec8d98dc7a2ec4dcc6fae7e17eb47f84ded865","type":"artist","uuid":"38e9f2df-addb-4a2b-a27c-c5b50c477b13"}
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 0x6e0761135be0a1dc2058e387b8fa07a0f7dcdbdaf92a6c9da24c3671afc43081. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38e9f2df-addb-4a2b-a27c-c5b50c477b13.json and https://artists.proofprofile.net/proofs/artist/38e9f2df-addb-4a2b-a27c-c5b50c477b13.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 0xc6ebdd54c8ad72925340efc4f775a382dc7b28732771eeac3a494a0cc93ce814. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PLA391478216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f16bede8979d255a015d0113cf9fb183cb25d2ad8ddcee1fb6f4f72191966d. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/PLA391478306.