Mat Playford
type: MusicGroup
popularity: 8
followers: 522
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa82444eb650e463658674b2bb6b510fccd3a63f04306697a219306671b66ac17
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4bd810c3-b937-4755-8027-f04015e21cdc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4bd810c3-b937-4755-8027-f04015e21cdc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4bd810c3-b937-4755-8027-f04015e21cdc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa82444eb650e463658674b2bb6b510fccd3a63f04306697a219306671b66ac17","name":"Mat Playford","registered_at":"2026-06-16T16:04:25Z","symbol":"NIM1103596","token_address":"0x7c563b46dbfb05e99eda59f10f26571cb62da454","type":"artist","uuid":"4bd810c3-b937-4755-8027-f04015e21cdc"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82444eb650e463658674b2bb6b510fccd3a63f04306697a219306671b66ac17. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4bd810c3-b937-4755-8027-f04015e21cdc.json and https://artists.proofprofile.net/proofs/artist/4bd810c3-b937-4755-8027-f04015e21cdc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xa82444eb650e463658674b2bb6b510fccd3a63f04306697a219306671b66ac17","name":"Mat Playford","registered_at":"2026-06-16T16:04:25Z","symbol":"NIM1103596","token_address":"0x7c563b46dbfb05e99eda59f10f26571cb62da454","type":"artist","uuid":"4bd810c3-b937-4755-8027-f04015e21cdc"}
album: The Spell / Mornin
  type: MusicAlbum
  date published: 2008-03-10
album: The Spell / Mornin
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  date published: 2008-03-10
album: The Spell / Mornin
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  date published: 2008-03-10
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  date published: 2010-06-07
album: Portraits 01
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album: Portraits 01
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  date published: 2011-07-20
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  date published: 2014-07-06
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  date published: 2014-07-06
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  type: MusicAlbum
  date published: 2019-04-26
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  type: MusicAlbum
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album: Morning Call
  type: MusicAlbum
  date published: 2020-04-17
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  type: MusicAlbum
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