Cardboard Boxer
type: MusicGroup
description: Cardboard Boxer is a 2016 American drama film written and directed by Knate Lee. The film stars Thomas Haden Church, Terrence Howard, Boyd Holbrook, Rhys Wakefield and David Henrie. The story is cent
popularity: 2
followers: 1023
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2a1ee943c79f36bfe8b2e96ff61a0009f9e51cf58a0f872a2ef706052aaeb93b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ed22cb86-9e47-44ec-9e6e-c938ed67fda1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ed22cb86-9e47-44ec-9e6e-c938ed67fda1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ed22cb86-9e47-44ec-9e6e-c938ed67fda1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2a1ee943c79f36bfe8b2e96ff61a0009f9e51cf58a0f872a2ef706052aaeb93b","name":"Cardboard Boxer","registered_at":"2026-06-21T11:37:16Z","symbol":"NIM1913103","token_address":"0x787a8f6b0b60aab03aa30cdfb55b0177aeeaf4f1","type":"artist","uuid":"ed22cb86-9e47-44ec-9e6e-c938ed67fda1"}
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 0x2a1ee943c79f36bfe8b2e96ff61a0009f9e51cf58a0f872a2ef706052aaeb93b. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed22cb86-9e47-44ec-9e6e-c938ed67fda1.json and https://artists.proofprofile.net/proofs/artist/ed22cb86-9e47-44ec-9e6e-c938ed67fda1.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x2a1ee943c79f36bfe8b2e96ff61a0009f9e51cf58a0f872a2ef706052aaeb93b","name":"Cardboard Boxer","registered_at":"2026-06-21T11:37:16Z","symbol":"NIM1913103","token_address":"0x787a8f6b0b60aab03aa30cdfb55b0177aeeaf4f1","type":"artist","uuid":"ed22cb86-9e47-44ec-9e6e-c938ed67fda1"}
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