Mattias Spee
type: MusicGroup
genre: chamber music
popularity: 3
followers: 118
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xad2768f71d1292356b8c513517e4f32373c91ee4dcb32d5db156c83c6c9d8584
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953907
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953907
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/15c82044-ee08-4662-ba38-53367a1c8b35.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/15c82044-ee08-4662-ba38-53367a1c8b35.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/15c82044-ee08-4662-ba38-53367a1c8b35
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:39:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xad2768f71d1292356b8c513517e4f32373c91ee4dcb32d5db156c83c6c9d8584","name":"Mattias Spee","registered_at":"2026-06-15T21:12:06Z","symbol":"NIM0833300","token_address":"0x793af5d8d0e96611abe6f1a102f90df94e6ccff2","type":"artist","uuid":"15c82044-ee08-4662-ba38-53367a1c8b35"}
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 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2768f71d1292356b8c513517e4f32373c91ee4dcb32d5db156c83c6c9d8584. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15c82044-ee08-4662-ba38-53367a1c8b35.json and https://artists.proofprofile.net/proofs/artist/15c82044-ee08-4662-ba38-53367a1c8b35.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:39:24Z
  text: {"copyright_id":"0xad2768f71d1292356b8c513517e4f32373c91ee4dcb32d5db156c83c6c9d8584","name":"Mattias Spee","registered_at":"2026-06-15T21:12:06Z","symbol":"NIM0833300","token_address":"0x793af5d8d0e96611abe6f1a102f90df94e6ccff2","type":"artist","uuid":"15c82044-ee08-4662-ba38-53367a1c8b35"}
album: Eclipse, Vol. 1: Joseph Wölfl
  type: MusicAlbum
  date published: 2021-06-11
album: Eclipse, Vol. 2: Hans Henkemans
  type: MusicAlbum
  date published: 2023-05-12
album: Eclipse, Vol. 3: Sergei Protopopov
  type: MusicAlbum
  date published: 2025-01-24