Chat Noir
type: MusicGroup
genre: italian-jazz-fusion
description: (French for 'black cat') is a cabaret and revue theatre in Oslo, Norway. It was established in 1912 by Bokken Lasson. The current director is Tom Sterri. Establishment Chat Noir was established as a
popularity: 3
followers: 1068
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x97780dbaf4e8da788ec63f92cca19b40858482e17bd7c048edb9add305413600
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954027
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954027
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/395b0597-9d0c-43b4-9f95-aaa9307f16c9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/395b0597-9d0c-43b4-9f95-aaa9307f16c9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/395b0597-9d0c-43b4-9f95-aaa9307f16c9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T00:55:08Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x97780dbaf4e8da788ec63f92cca19b40858482e17bd7c048edb9add305413600","name":"Chat Noir","registered_at":"2026-06-16T09:32:36Z","symbol":"NIM1010112","token_address":"0x63b3990249943e6ad63fda146b1812c8f4ccd74b","type":"artist","uuid":"395b0597-9d0c-43b4-9f95-aaa9307f16c9"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97780dbaf4e8da788ec63f92cca19b40858482e17bd7c048edb9add305413600. Chain 2 (Bitcoin): anchored in block 954027 (2026-06-17T00:55:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/395b0597-9d0c-43b4-9f95-aaa9307f16c9.json and https://artists.proofprofile.net/proofs/artist/395b0597-9d0c-43b4-9f95-aaa9307f16c9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T00:55:08Z
  text: {"copyright_id":"0x97780dbaf4e8da788ec63f92cca19b40858482e17bd7c048edb9add305413600","name":"Chat Noir","registered_at":"2026-06-16T09:32:36Z","symbol":"NIM1010112","token_address":"0x63b3990249943e6ad63fda146b1812c8f4ccd74b","type":"artist","uuid":"395b0597-9d0c-43b4-9f95-aaa9307f16c9"}
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