Front Line
type: MusicGroup
description: thumb|Australian soldiers in a front-line trench during World War I. Photograph taken by Capt. F. Hurley, sometime between August 1917 and August 1918. A front line (alternatively front-line or frontl
popularity: 2
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xff39e1b4080e7dc7fb434ba55bb63d9fe1bfcd9b6ab7e9dd0c2c79be56062a03
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953968
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953968
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2922c135-143a-40da-adaf-ce6bd75dd50b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2922c135-143a-40da-adaf-ce6bd75dd50b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2922c135-143a-40da-adaf-ce6bd75dd50b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:01:49Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xff39e1b4080e7dc7fb434ba55bb63d9fe1bfcd9b6ab7e9dd0c2c79be56062a03","name":"Front Line","registered_at":"2026-06-16T03:55:54Z","symbol":"NIM0929715","token_address":"0xa8b8ac8582a833d383fc200748416a6ff0424d2b","type":"artist","uuid":"2922c135-143a-40da-adaf-ce6bd75dd50b"}
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 0xff39e1b4080e7dc7fb434ba55bb63d9fe1bfcd9b6ab7e9dd0c2c79be56062a03. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2922c135-143a-40da-adaf-ce6bd75dd50b.json and https://artists.proofprofile.net/proofs/artist/2922c135-143a-40da-adaf-ce6bd75dd50b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T16:01:49Z
  text: {"copyright_id":"0xff39e1b4080e7dc7fb434ba55bb63d9fe1bfcd9b6ab7e9dd0c2c79be56062a03","name":"Front Line","registered_at":"2026-06-16T03:55:54Z","symbol":"NIM0929715","token_address":"0xa8b8ac8582a833d383fc200748416a6ff0424d2b","type":"artist","uuid":"2922c135-143a-40da-adaf-ce6bd75dd50b"}