Masta Ace
type: MusicGroup
description: Duval Clear (born December 4, 1966), better known by his stage name Masta Ace, is an American rapper and record producer from New York City. A lead member of Mr. Magic's hip hop collective Juice Crew,
popularity: 2
followers: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa4a9575ff295c8526a8fed11480fdd976501e1a6d4a1c284b3b2c4023dedbe18
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953997
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953997
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b9f2283-d8e3-476b-9ddc-5d6edabbf5f1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b9f2283-d8e3-476b-9ddc-5d6edabbf5f1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2b9f2283-d8e3-476b-9ddc-5d6edabbf5f1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:07:57Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa4a9575ff295c8526a8fed11480fdd976501e1a6d4a1c284b3b2c4023dedbe18","name":"Masta Ace","registered_at":"2026-06-16T04:41:48Z","symbol":"NIM0940672","token_address":"0xf0ffc9920f107940afe2abcc216d6196267dee03","type":"artist","uuid":"2b9f2283-d8e3-476b-9ddc-5d6edabbf5f1"}
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 0xa4a9575ff295c8526a8fed11480fdd976501e1a6d4a1c284b3b2c4023dedbe18. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b9f2283-d8e3-476b-9ddc-5d6edabbf5f1.json and https://artists.proofprofile.net/proofs/artist/2b9f2283-d8e3-476b-9ddc-5d6edabbf5f1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0xa4a9575ff295c8526a8fed11480fdd976501e1a6d4a1c284b3b2c4023dedbe18","name":"Masta Ace","registered_at":"2026-06-16T04:41:48Z","symbol":"NIM0940672","token_address":"0xf0ffc9920f107940afe2abcc216d6196267dee03","type":"artist","uuid":"2b9f2283-d8e3-476b-9ddc-5d6edabbf5f1"}