The jacka
type: MusicGroup
description: Shaheed Akbar (born Dominick Newton; August 12, 1977 – February 2, 2015), better known by his stage name The Jacka, was an American rapper from Pittsburg, California. He began his career as part of th
popularity: 13
followers: 18
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbbe80eb7db211ed8e1cc2757b6a8b4a32b94e5c37008acc6d1797fcf4170f0b4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953625
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953625
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2981d019-a1d0-40f2-b345-8a9e2211c4d7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2981d019-a1d0-40f2-b345-8a9e2211c4d7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2981d019-a1d0-40f2-b345-8a9e2211c4d7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T11:37:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbbe80eb7db211ed8e1cc2757b6a8b4a32b94e5c37008acc6d1797fcf4170f0b4","name":"The jacka","registered_at":"2026-06-14T08:50:07Z","symbol":"NIM0400932","token_address":"0x04fa8f6f15b58dca7739dc5eabb56ae46b61ecdd","type":"artist","uuid":"2981d019-a1d0-40f2-b345-8a9e2211c4d7"}
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 0xbbe80eb7db211ed8e1cc2757b6a8b4a32b94e5c37008acc6d1797fcf4170f0b4. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2981d019-a1d0-40f2-b345-8a9e2211c4d7.json and https://artists.proofprofile.net/proofs/artist/2981d019-a1d0-40f2-b345-8a9e2211c4d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T11:37:06Z
  text: {"copyright_id":"0xbbe80eb7db211ed8e1cc2757b6a8b4a32b94e5c37008acc6d1797fcf4170f0b4","name":"The jacka","registered_at":"2026-06-14T08:50:07Z","symbol":"NIM0400932","token_address":"0x04fa8f6f15b58dca7739dc5eabb56ae46b61ecdd","type":"artist","uuid":"2981d019-a1d0-40f2-b345-8a9e2211c4d7"}