Marcus Sayzer
type: MusicGroup
popularity: 2
followers: 1042
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6663ea7b3ceb6ed9e77107a9fa33ec5a9c31ee266563744f16059dafa3c12fd7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b9c6e39e-8f93-41b2-a1cc-0feb10e66024.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b9c6e39e-8f93-41b2-a1cc-0feb10e66024.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b9c6e39e-8f93-41b2-a1cc-0feb10e66024
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6663ea7b3ceb6ed9e77107a9fa33ec5a9c31ee266563744f16059dafa3c12fd7","name":"Marcus Sayzer","registered_at":"2026-06-20T16:30:34Z","symbol":"NIM1655038","token_address":"0x06f36dce9cd508ca4fbef75a4dcae93ee2eb2431","type":"artist","uuid":"b9c6e39e-8f93-41b2-a1cc-0feb10e66024"}
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 0x6663ea7b3ceb6ed9e77107a9fa33ec5a9c31ee266563744f16059dafa3c12fd7. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9c6e39e-8f93-41b2-a1cc-0feb10e66024.json and https://artists.proofprofile.net/proofs/artist/b9c6e39e-8f93-41b2-a1cc-0feb10e66024.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x6663ea7b3ceb6ed9e77107a9fa33ec5a9c31ee266563744f16059dafa3c12fd7","name":"Marcus Sayzer","registered_at":"2026-06-20T16:30:34Z","symbol":"NIM1655038","token_address":"0x06f36dce9cd508ca4fbef75a4dcae93ee2eb2431","type":"artist","uuid":"b9c6e39e-8f93-41b2-a1cc-0feb10e66024"}
album: New York to Montreal
  type: MusicAlbum
  date published: 2019-08-28
album: Part of Me
  type: MusicAlbum
  date published: 2020-04-28
album: Turning Lane
  type: MusicAlbum
  date published: 2020-07-15
album: The Remedy
  type: MusicAlbum
  date published: 2020-09-10
album: Full Circle
  type: MusicAlbum
  date published: 2020-11-05
album: Do You Remember When?
  type: MusicAlbum
  date published: 2021-01-26
album: Are We Not Supposed To Talk Again?
  type: MusicAlbum
  date published: 2021-02-26
album: Inside of My Head
  type: MusicAlbum
  date published: 2021-04-30