The Marenghi Fairground Organ
type: MusicGroup
popularity: 5
followers: 205
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3889376d25632d2249fd9a0b66549ca9fb84f3bbf50401cf6527f2a1ce01ae6b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a578eb45-29b7-4947-9d61-25890cf47d19.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a578eb45-29b7-4947-9d61-25890cf47d19.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a578eb45-29b7-4947-9d61-25890cf47d19
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3889376d25632d2249fd9a0b66549ca9fb84f3bbf50401cf6527f2a1ce01ae6b","name":"The Marenghi Fairground Organ","registered_at":"2026-06-20T07:25:22Z","symbol":"NIM1552557","token_address":"0x0a38ec73e81bc77d64d5580c74fdcf34a668139f","type":"artist","uuid":"a578eb45-29b7-4947-9d61-25890cf47d19"}
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 0x3889376d25632d2249fd9a0b66549ca9fb84f3bbf50401cf6527f2a1ce01ae6b. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a578eb45-29b7-4947-9d61-25890cf47d19.json and https://artists.proofprofile.net/proofs/artist/a578eb45-29b7-4947-9d61-25890cf47d19.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0x3889376d25632d2249fd9a0b66549ca9fb84f3bbf50401cf6527f2a1ce01ae6b","name":"The Marenghi Fairground Organ","registered_at":"2026-06-20T07:25:22Z","symbol":"NIM1552557","token_address":"0x0a38ec73e81bc77d64d5580c74fdcf34a668139f","type":"artist","uuid":"a578eb45-29b7-4947-9d61-25890cf47d19"}
album: Mechanical Marches (Vol. 1)
  type: MusicAlbum
  date published: 2001
album: Mechanical Marches Vol. 1
  type: MusicAlbum
  date published: 2001
album: Mechanical Marches (Vol. 2)
  type: MusicAlbum
  date published: 2003
album: Mechanical Marches Vol. II
  type: MusicAlbum
  date published: 2003
album: Mechanical Marches
  type: MusicAlbum
  date published: 2008-04-14
album: Mechanical Marches
  type: MusicAlbum
  date published: 2008-04-14
album: Mechanical Marches
  type: MusicAlbum
  date published: 2008-04-14
album: Mechanical Marches
  type: MusicAlbum
  date published: 2008-06-10
album: Mechanical Marches
  type: MusicAlbum
  date published: 2008-06-10
album: Life Is A Circus
  type: MusicAlbum
  date published: 2015-03-03
album: Life Is A Circus
  type: MusicAlbum
  date published: 2015-03-03