Katie Marsh
type: MusicGroup
popularity: 12
followers: 27
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7e44d3d0c5a9c7af1575a94e734a3a3a0a0b25086ab3fe150f5ebcc09034f661
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953750
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953750
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a7fc1099-bf45-47e6-99e0-da1cd41e3b2d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a7fc1099-bf45-47e6-99e0-da1cd41e3b2d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a7fc1099-bf45-47e6-99e0-da1cd41e3b2d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T06:12:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7e44d3d0c5a9c7af1575a94e734a3a3a0a0b25086ab3fe150f5ebcc09034f661","name":"Katie Marsh","registered_at":"2026-06-14T22:05:23Z","symbol":"NIM0590613","token_address":"0x7d4b67250668edbc655acaab52f0425cf9060228","type":"artist","uuid":"a7fc1099-bf45-47e6-99e0-da1cd41e3b2d"}
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 0x7e44d3d0c5a9c7af1575a94e734a3a3a0a0b25086ab3fe150f5ebcc09034f661. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7fc1099-bf45-47e6-99e0-da1cd41e3b2d.json and https://artists.proofprofile.net/proofs/artist/a7fc1099-bf45-47e6-99e0-da1cd41e3b2d.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-15T06:12:23Z
  text: {"copyright_id":"0x7e44d3d0c5a9c7af1575a94e734a3a3a0a0b25086ab3fe150f5ebcc09034f661","name":"Katie Marsh","registered_at":"2026-06-14T22:05:23Z","symbol":"NIM0590613","token_address":"0x7d4b67250668edbc655acaab52f0425cf9060228","type":"artist","uuid":"a7fc1099-bf45-47e6-99e0-da1cd41e3b2d"}
album: How Not To Murder Your Ex [The Bad Girls Detective Agency, Book 1, A BRAND NEW clever, laugh-out-loud, cosy mystery from Katie Marsh (Unabridged)]
  type: MusicAlbum
  date published: 2023-12-01
album: Murder on the Dancefloor (Unabridged)
  type: MusicAlbum
  date published: 2024-03-29
album: Murder on the Menu [Join the Bad Girls Detective Agency! A BRAND NEW instalment in Katie Marsh's hilarious cosy mystery series for 2025 (Unabridged)]
  type: MusicAlbum
  date published: 2025-01-18