Invisible Ink
type: MusicGroup
description: thumb|right|upright=1.3|A coded letter from Benedict Arnold, originally written in invisible ink. Handwriting by Peggy Shippen Arnold is interspersed with coded communication in Arnold's hand. Invisi
popularity: 3
followers: 9
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe94aa335a1ce81ff1ce534e1c52ad3109db9d5c0b532085b554e6b6f590a427f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e4b39729-4976-4555-a62e-e4a390bd7cac.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e4b39729-4976-4555-a62e-e4a390bd7cac.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e4b39729-4976-4555-a62e-e4a390bd7cac
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe94aa335a1ce81ff1ce534e1c52ad3109db9d5c0b532085b554e6b6f590a427f","name":"Invisible Ink","registered_at":"2026-06-21T08:00:11Z","symbol":"NIM1869121","token_address":"0xe02ad00b66d43e71f4d866374510ddb316b12f84","type":"artist","uuid":"e4b39729-4976-4555-a62e-e4a390bd7cac"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94aa335a1ce81ff1ce534e1c52ad3109db9d5c0b532085b554e6b6f590a427f. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4b39729-4976-4555-a62e-e4a390bd7cac.json and https://artists.proofprofile.net/proofs/artist/e4b39729-4976-4555-a62e-e4a390bd7cac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T11:50:32Z
  text: {"copyright_id":"0xe94aa335a1ce81ff1ce534e1c52ad3109db9d5c0b532085b554e6b6f590a427f","name":"Invisible Ink","registered_at":"2026-06-21T08:00:11Z","symbol":"NIM1869121","token_address":"0xe02ad00b66d43e71f4d866374510ddb316b12f84","type":"artist","uuid":"e4b39729-4976-4555-a62e-e4a390bd7cac"}
album: Kick Out the Old Stuff
  type: MusicAlbum
  date published: 2025-05-07
album: Staycation
  type: MusicAlbum
  date published: 2025-05-14