The High Crusade
type: MusicGroup
description: The High Crusade is a science fiction novel by American writer Poul Anderson, about the consequences of an extraterrestrial scoutship landing in medieval England. Poul Anderson described the novel as
popularity: 2
followers: 385
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfc7004cce9097a639b498b785f2113ef9319a07ad4f6676f34e01191db0a7881
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/52292892-15d3-4c94-9fb5-57133edcaa8d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/52292892-15d3-4c94-9fb5-57133edcaa8d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/52292892-15d3-4c94-9fb5-57133edcaa8d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfc7004cce9097a639b498b785f2113ef9319a07ad4f6676f34e01191db0a7881","name":"The High Crusade","registered_at":"2026-06-16T18:10:28Z","symbol":"NIM1133662","token_address":"0x07a8935e6bbacd2b21a2d680bc8b86f555625c7f","type":"artist","uuid":"52292892-15d3-4c94-9fb5-57133edcaa8d"}
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 0xfc7004cce9097a639b498b785f2113ef9319a07ad4f6676f34e01191db0a7881. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52292892-15d3-4c94-9fb5-57133edcaa8d.json and https://artists.proofprofile.net/proofs/artist/52292892-15d3-4c94-9fb5-57133edcaa8d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xfc7004cce9097a639b498b785f2113ef9319a07ad4f6676f34e01191db0a7881","name":"The High Crusade","registered_at":"2026-06-16T18:10:28Z","symbol":"NIM1133662","token_address":"0x07a8935e6bbacd2b21a2d680bc8b86f555625c7f","type":"artist","uuid":"52292892-15d3-4c94-9fb5-57133edcaa8d"}
album: It's Not What You Think
  type: MusicAlbum
  date published: 2010-09-07
album: Main Statement
  type: MusicAlbum
  date published: 2020-01-20