Catapult City
type: MusicGroup
popularity: 2
followers: 199
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x83b4a42a7b8aa867a3be4c65bb8f73fcf082cdb361272b4e9cb93091e6240ab5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/995fd558-1d16-4a85-9613-9ab1bd0f12c0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/995fd558-1d16-4a85-9613-9ab1bd0f12c0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/995fd558-1d16-4a85-9613-9ab1bd0f12c0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x83b4a42a7b8aa867a3be4c65bb8f73fcf082cdb361272b4e9cb93091e6240ab5","name":"Catapult City","registered_at":"2026-06-17T19:14:50Z","symbol":"NIM1492507","token_address":"0x69ac2fe66edd0a57977c83b81911b001fc1a88c6","type":"artist","uuid":"995fd558-1d16-4a85-9613-9ab1bd0f12c0"}
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 0x83b4a42a7b8aa867a3be4c65bb8f73fcf082cdb361272b4e9cb93091e6240ab5. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/995fd558-1d16-4a85-9613-9ab1bd0f12c0.json and https://artists.proofprofile.net/proofs/artist/995fd558-1d16-4a85-9613-9ab1bd0f12c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x83b4a42a7b8aa867a3be4c65bb8f73fcf082cdb361272b4e9cb93091e6240ab5","name":"Catapult City","registered_at":"2026-06-17T19:14:50Z","symbol":"NIM1492507","token_address":"0x69ac2fe66edd0a57977c83b81911b001fc1a88c6","type":"artist","uuid":"995fd558-1d16-4a85-9613-9ab1bd0f12c0"}
album: Daydreaming
  type: MusicAlbum
  date published: 2024-02-02
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  type: MusicAlbum
  date published: 2024-03-08
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  type: MusicAlbum
  date published: 2024-04-05
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  type: MusicAlbum
  date published: 2024-05-20
album: Dead of the Night
  type: MusicAlbum
  date published: 2024-08-14
album: Leaving you
  type: MusicAlbum
  date published: 2024-09-25
album: The Bay (Live session)
  type: MusicAlbum
  date published: 2025-03-10
album: Mad World
  type: MusicAlbum
  date published: 2025-10-17