Var Umn
type: MusicGroup
popularity: 5
followers: 649
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x30377600d4ecb10945846b6bfeeb9589deb8e39aa131ced8b4ce26ee1c586a5d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953909
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953909
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0fb2fb34-c904-47f2-bb22-8ca4b855e2d6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0fb2fb34-c904-47f2-bb22-8ca4b855e2d6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0fb2fb34-c904-47f2-bb22-8ca4b855e2d6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:53:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x30377600d4ecb10945846b6bfeeb9589deb8e39aa131ced8b4ce26ee1c586a5d","name":"Var Umn","registered_at":"2026-06-15T19:05:27Z","symbol":"NIM0803103","token_address":"0x3c81c1949e3fc5706a51b42f2734dc5062977c7a","type":"artist","uuid":"0fb2fb34-c904-47f2-bb22-8ca4b855e2d6"}
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 0x30377600d4ecb10945846b6bfeeb9589deb8e39aa131ced8b4ce26ee1c586a5d. 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/0fb2fb34-c904-47f2-bb22-8ca4b855e2d6.json and https://artists.proofprofile.net/proofs/artist/0fb2fb34-c904-47f2-bb22-8ca4b855e2d6.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0x30377600d4ecb10945846b6bfeeb9589deb8e39aa131ced8b4ce26ee1c586a5d","name":"Var Umn","registered_at":"2026-06-15T19:05:27Z","symbol":"NIM0803103","token_address":"0x3c81c1949e3fc5706a51b42f2734dc5062977c7a","type":"artist","uuid":"0fb2fb34-c904-47f2-bb22-8ca4b855e2d6"}
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