{"copyright_id":"0x6a4d33ba445d2bf6ced61b46e3b6ecaa37c2ddb842ee21c78100fef88f29f08a","name":"Kammerchor der Salzburger Festspiele","registered_at":"2026-06-16T09:35:00Z","symbol":"NIM1010682","token_address":"0xf724548a298fdfaac5ead00314c5d3ed54ce4030","type":"artist","uuid":"39a07cc1-6eb0-43e4-8f06-50f1e83463d0"}
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 0x6a4d33ba445d2bf6ced61b46e3b6ecaa37c2ddb842ee21c78100fef88f29f08a. Chain 2 (Bitcoin): anchored in block 954028 (2026-06-17T01:08:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39a07cc1-6eb0-43e4-8f06-50f1e83463d0.json and https://artists.proofprofile.net/proofs/artist/39a07cc1-6eb0-43e4-8f06-50f1e83463d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Il trovatore, Act III: Di quella pira - Live at Großes Festspielhaus, Salzburg, 1962
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 0x650269549cdda71a90ca84e29fcccc5adf44c70759aa9b767b96804e5e1048d0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEF056231523.
Il trovatore, Act I: All'erta! all'erta! - Live at Großes Festspielhaus, Salzburg, 1962
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9b1607ae91c3ce4f36e640c7c6a23711fda58960cecb89a09f720cd810c47a. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEF056231501.