Greg Marks
type: MusicGroup
popularity: 7
followers: 4624
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x820978720c86a23d4d5ad84c725e7e54147354f121d328adc214aeb26550725c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f607daf1-cb65-44c8-971c-bd270e5bb34a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f607daf1-cb65-44c8-971c-bd270e5bb34a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f607daf1-cb65-44c8-971c-bd270e5bb34a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x820978720c86a23d4d5ad84c725e7e54147354f121d328adc214aeb26550725c","name":"Greg Marks","registered_at":"2026-06-21T15:35:42Z","symbol":"NIM1962149","token_address":"0xbd44a45e74b2fa634425931cea8ff9d2987f8f52","type":"artist","uuid":"f607daf1-cb65-44c8-971c-bd270e5bb34a"}
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 0x820978720c86a23d4d5ad84c725e7e54147354f121d328adc214aeb26550725c. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f607daf1-cb65-44c8-971c-bd270e5bb34a.json and https://artists.proofprofile.net/proofs/artist/f607daf1-cb65-44c8-971c-bd270e5bb34a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
  text: {"copyright_id":"0x820978720c86a23d4d5ad84c725e7e54147354f121d328adc214aeb26550725c","name":"Greg Marks","registered_at":"2026-06-21T15:35:42Z","symbol":"NIM1962149","token_address":"0xbd44a45e74b2fa634425931cea8ff9d2987f8f52","type":"artist","uuid":"f607daf1-cb65-44c8-971c-bd270e5bb34a"}
album: Too Late
  type: MusicAlbum
  date published: 2015-10-27
album: Too Late
  type: MusicAlbum
  date published: 2017-01-05
album: Ain't No Way
  type: MusicAlbum
  date published: 2017-01-10
album: Letting Go
  type: MusicAlbum
  date published: 2017-06-16
album: Don't Tell Me
  type: MusicAlbum
  date published: 2018-09-15
album: Imagine
  type: MusicAlbum
  date published: 2018-12-07
album: Real Life
  type: MusicAlbum
  date published: 2019-06-01
album: Too Wavy
  type: MusicAlbum
  date published: 2020-01-24
album: Daughter
  type: MusicAlbum
  date published: 2020-04-30