Mark UC
type: MusicGroup
popularity: 9
followers: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd2b9b2dd5a46370acaa2747ce1b7c88ec78166f9d3a76cfc2eaf34672d278ecc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954555
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954555
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aef3b701-a499-4485-97d2-5e777263508c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aef3b701-a499-4485-97d2-5e777263508c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/aef3b701-a499-4485-97d2-5e777263508c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T12:10:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd2b9b2dd5a46370acaa2747ce1b7c88ec78166f9d3a76cfc2eaf34672d278ecc","name":"Mark UC","registered_at":"2026-06-20T11:22:36Z","symbol":"NIM1600183","token_address":"0xd02ad1b7605527b26a2ee69741aefde302ef3dd6","type":"artist","uuid":"aef3b701-a499-4485-97d2-5e777263508c"}
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 0xd2b9b2dd5a46370acaa2747ce1b7c88ec78166f9d3a76cfc2eaf34672d278ecc. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aef3b701-a499-4485-97d2-5e777263508c.json and https://artists.proofprofile.net/proofs/artist/aef3b701-a499-4485-97d2-5e777263508c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:10:20Z
  text: {"copyright_id":"0xd2b9b2dd5a46370acaa2747ce1b7c88ec78166f9d3a76cfc2eaf34672d278ecc","name":"Mark UC","registered_at":"2026-06-20T11:22:36Z","symbol":"NIM1600183","token_address":"0xd02ad1b7605527b26a2ee69741aefde302ef3dd6","type":"artist","uuid":"aef3b701-a499-4485-97d2-5e777263508c"}