Jan Hellriegel is a singer/songwriter based in Auckland, New Zealand. Her first recorded appearances were with Dunedin band Working With Walt in the mid-1980s when she studied at the University of Ot
{"copyright_id":"0x37c24eb9d74eefffa09067dcf8b9182dcafae3c33cb65cc89451f5f9e0bdd277","name":"Jan Hellriegel","registered_at":"2026-06-16T06:22:52Z","symbol":"NIM0964819","token_address":"0xe5ab54cc9ecd4be0deae2f0bd6cb6c9b143ad6cb","type":"artist","uuid":"3062ef7b-7a7b-4c44-a49c-5cc74ba43eb0"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c24eb9d74eefffa09067dcf8b9182dcafae3c33cb65cc89451f5f9e0bdd277. Chain 2 (Bitcoin): anchored in block 953996 (2026-06-16T20:04:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3062ef7b-7a7b-4c44-a49c-5cc74ba43eb0.json and https://artists.proofprofile.net/proofs/artist/3062ef7b-7a7b-4c44-a49c-5cc74ba43eb0.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1001b6dfe5f7b27a152e676aa278c77f1e78d84457274cf5f7255e24bcb790bc. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/NZBL11000014.