Jessica Campbell
type: MusicGroup
description: Jessica Campbell (October 30, 1982 – December 29, 2020) was an American actress. Biography Campbell was born in Tulsa, Oklahoma. Her acting appearances included the roles of Tammy Metzler in the 1999
popularity: 2
followers: 427
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x18d0411c42f6fe66685383f7c7f556d52f84444b5e85d0a6023439193d10da32
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953896
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953896
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0f1b682e-b3d3-4402-a673-67160fbc2837.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0f1b682e-b3d3-4402-a673-67160fbc2837.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0f1b682e-b3d3-4402-a673-67160fbc2837
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T06:05:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x18d0411c42f6fe66685383f7c7f556d52f84444b5e85d0a6023439193d10da32","name":"Jessica Campbell","registered_at":"2026-06-15T18:45:44Z","symbol":"NIM0798407","token_address":"0xc78e605dfab83b3977fd5d2362861702960d59a7","type":"artist","uuid":"0f1b682e-b3d3-4402-a673-67160fbc2837"}
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 0x18d0411c42f6fe66685383f7c7f556d52f84444b5e85d0a6023439193d10da32. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f1b682e-b3d3-4402-a673-67160fbc2837.json and https://artists.proofprofile.net/proofs/artist/0f1b682e-b3d3-4402-a673-67160fbc2837.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0x18d0411c42f6fe66685383f7c7f556d52f84444b5e85d0a6023439193d10da32","name":"Jessica Campbell","registered_at":"2026-06-15T18:45:44Z","symbol":"NIM0798407","token_address":"0xc78e605dfab83b3977fd5d2362861702960d59a7","type":"artist","uuid":"0f1b682e-b3d3-4402-a673-67160fbc2837"}
album: Put the Stars Back EP
  type: MusicAlbum
  date published: 2009-01-01
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  date published: 2022-07-10