Nina Hologram
type: MusicGroup
genre: darkwave
popularity: 2
followers: 65
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x249f6d6629edec6d1b449436ea3730d773ea8b7ac406328f835be3359ef17799
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/77861e16-4284-4967-bb1f-a3f92a36d1b6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/77861e16-4284-4967-bb1f-a3f92a36d1b6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/77861e16-4284-4967-bb1f-a3f92a36d1b6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x249f6d6629edec6d1b449436ea3730d773ea8b7ac406328f835be3359ef17799","name":"Nina Hologram","registered_at":"2026-06-17T07:40:20Z","symbol":"NIM1326877","token_address":"0x6c83f35daf7fc19e4d7832feba97dc8598dcb592","type":"artist","uuid":"77861e16-4284-4967-bb1f-a3f92a36d1b6"}
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 0x249f6d6629edec6d1b449436ea3730d773ea8b7ac406328f835be3359ef17799. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77861e16-4284-4967-bb1f-a3f92a36d1b6.json and https://artists.proofprofile.net/proofs/artist/77861e16-4284-4967-bb1f-a3f92a36d1b6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T15:44:10Z
  text: {"copyright_id":"0x249f6d6629edec6d1b449436ea3730d773ea8b7ac406328f835be3359ef17799","name":"Nina Hologram","registered_at":"2026-06-17T07:40:20Z","symbol":"NIM1326877","token_address":"0x6c83f35daf7fc19e4d7832feba97dc8598dcb592","type":"artist","uuid":"77861e16-4284-4967-bb1f-a3f92a36d1b6"}
album: Nina Hologram
  type: MusicAlbum
  date published: 2021-12-02