Francis Day
type: MusicGroup
description: thumb|Francis Day Francis Talbot Day (2 March 1829 – 10 July 1889) was an army surgeon and naturalist in the Madras Presidency who later became the Inspector-General of Fisheries in India and Burma.
popularity: 3
followers: 165
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xacbe887ec989d763b08683f9b1449c1b066cf481fb139660c6833c1c64e34827
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954647
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954647
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d7c113b2-67d7-4481-b1e5-9325acc98fce.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d7c113b2-67d7-4481-b1e5-9325acc98fce.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d7c113b2-67d7-4481-b1e5-9325acc98fce
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T04:36:58Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xacbe887ec989d763b08683f9b1449c1b066cf481fb139660c6833c1c64e34827","name":"Francis Day","registered_at":"2026-06-21T03:19:39Z","symbol":"NIM1803896","token_address":"0xdb3bcae0dacc00aeb035ee31b37a246e1603a6c6","type":"artist","uuid":"d7c113b2-67d7-4481-b1e5-9325acc98fce"}
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 0xacbe887ec989d763b08683f9b1449c1b066cf481fb139660c6833c1c64e34827. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7c113b2-67d7-4481-b1e5-9325acc98fce.json and https://artists.proofprofile.net/proofs/artist/d7c113b2-67d7-4481-b1e5-9325acc98fce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T04:36:58Z
  text: {"copyright_id":"0xacbe887ec989d763b08683f9b1449c1b066cf481fb139660c6833c1c64e34827","name":"Francis Day","registered_at":"2026-06-21T03:19:39Z","symbol":"NIM1803896","token_address":"0xdb3bcae0dacc00aeb035ee31b37a246e1603a6c6","type":"artist","uuid":"d7c113b2-67d7-4481-b1e5-9325acc98fce"}