{"copyright_id":"0x1323cd2d7e573b258d76edfca4585b524b599dbea26230ea8bab00c11cc520ca","name":"Friederike Wagner","registered_at":"2026-06-14T09:00:49Z","symbol":"NIM0403486","token_address":"0x173d1c6f62ea79a0b816de08bdfecca6f2b7b02e","type":"artist","uuid":"2bfe0d40-edb8-4fa8-b813-ffba0edfe32a"}
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 0x1323cd2d7e573b258d76edfca4585b524b599dbea26230ea8bab00c11cc520ca. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2bfe0d40-edb8-4fa8-b813-ffba0edfe32a.json and https://artists.proofprofile.net/proofs/artist/2bfe0d40-edb8-4fa8-b813-ffba0edfe32a.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Weichet nur, betrubte Schatten, BWV 202, "Wedding Cantata": Aria: Weichet nur, betrubte Schatten
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 0xceba8d7bbcbe9c77cf5ec346de1320c62af42bfa9bef82c0a7649adce269625b. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199631201 — a six-check JSON result.