Last Witness
type: MusicGroup
genre: hardcore
genre: melodic hardcore
popularity: 4
followers: 2868
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x12b735c277bfe028fe071aa0122c52a593ae87810f9ec0e3f3a8dc51f9d4b811
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954028
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954028
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3929b311-5856-4b2a-8c65-cc72f72b55a5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3929b311-5856-4b2a-8c65-cc72f72b55a5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3929b311-5856-4b2a-8c65-cc72f72b55a5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T01:08:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x12b735c277bfe028fe071aa0122c52a593ae87810f9ec0e3f3a8dc51f9d4b811","name":"Last Witness","registered_at":"2026-06-16T09:49:05Z","symbol":"NIM1014049","token_address":"0x14fc8decc7700d4bd456aeae9c226ff08cdda33a","type":"artist","uuid":"3929b311-5856-4b2a-8c65-cc72f72b55a5"}
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 0x12b735c277bfe028fe071aa0122c52a593ae87810f9ec0e3f3a8dc51f9d4b811. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3929b311-5856-4b2a-8c65-cc72f72b55a5.json and https://artists.proofprofile.net/proofs/artist/3929b311-5856-4b2a-8c65-cc72f72b55a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x12b735c277bfe028fe071aa0122c52a593ae87810f9ec0e3f3a8dc51f9d4b811","name":"Last Witness","registered_at":"2026-06-16T09:49:05Z","symbol":"NIM1014049","token_address":"0x14fc8decc7700d4bd456aeae9c226ff08cdda33a","type":"artist","uuid":"3929b311-5856-4b2a-8c65-cc72f72b55a5"}
album: An Unfinished Life
  type: MusicAlbum
  date published: 2009-10-23
album: An Unfinished Life
  type: MusicAlbum
  date published: 2009-10-23
album: An Unfinished Life
  type: MusicAlbum
  date published: 2009-11-02
album: Give Up
  type: MusicAlbum
  date published: 2010-08-30
album: Give Up
  type: MusicAlbum
  date published: 2010-08-30
album: Give Up
  type: MusicAlbum
  date published: 2010-08-30
album: The Void
  type: MusicAlbum
  date published: 2011-12-26
album: Mourning After
  type: MusicAlbum
  date published: 2012-02-20
album: Mourning After
  type: MusicAlbum
  date published: 2012-02-20
album: Mourning After
  type: MusicAlbum
  date published: 2012-02-20
album: Mourning After
  type: MusicAlbum
  date published: 2012-02-20
album: Saccharine / Less Than Zero
  type: MusicAlbum
  date published: 2012-10-09
album: Saccharine / Less Than Zero
  type: MusicAlbum
  date published: 2012-10-09
album: Saccharine / Less Than Zero
  type: MusicAlbum
  date published: 2012-10-09
album: The Final Show (Live)
  type: MusicAlbum
  date published: 2013-10-19
album: The Final Show
  type: MusicAlbum
  date published: 2015-09-04