Matthew Robertson
type: MusicGroup
genre: visual kei
description: Matthew Robertson (born March 9, 2001) is a Canadian professional ice hockey player who is a defenceman for the New York Rangers of the National Hockey League (NHL). He was selected by the Rangers in
popularity: 4
followers: 50
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6a8fee73bb6d58c6df246053d3ac04e68e59871642c65da598cad5febdcc72e9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954134
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954134
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7fb459a1-7a76-42ec-97f0-122745ca36d8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7fb459a1-7a76-42ec-97f0-122745ca36d8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7fb459a1-7a76-42ec-97f0-122745ca36d8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:41:05Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6a8fee73bb6d58c6df246053d3ac04e68e59871642c65da598cad5febdcc72e9","name":"Matthew Robertson","registered_at":"2026-06-17T10:01:01Z","symbol":"NIM1360433","token_address":"0x8f102f2c1a281979938eee316b59b70a54eba1b4","type":"artist","uuid":"7fb459a1-7a76-42ec-97f0-122745ca36d8"}
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 0x6a8fee73bb6d58c6df246053d3ac04e68e59871642c65da598cad5febdcc72e9. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7fb459a1-7a76-42ec-97f0-122745ca36d8.json and https://artists.proofprofile.net/proofs/artist/7fb459a1-7a76-42ec-97f0-122745ca36d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-18T03:01:36Z
  text: {"copyright_id":"0x6a8fee73bb6d58c6df246053d3ac04e68e59871642c65da598cad5febdcc72e9","name":"Matthew Robertson","registered_at":"2026-06-17T10:01:01Z","symbol":"NIM1360433","token_address":"0x8f102f2c1a281979938eee316b59b70a54eba1b4","type":"artist","uuid":"7fb459a1-7a76-42ec-97f0-122745ca36d8"}
album: Atmospheric Indie
  type: MusicAlbum
  date published: 2010-10-01
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  type: MusicAlbum
  date published: 2011-09-01
album: Inspiring Indie
  type: MusicAlbum
  date published: 2013-02-11
album: Under Pressure
  type: MusicAlbum
  date published: 2016-05-09