Robert Penner
type: MusicGroup
genre: children's music
description: Robert Clark Penner is an American mathematician whose work in geometry and combinatorics has found applications in high-energy physics and more recently in theoretical biology. He is the son of Sol P
popularity: 8
followers: 4
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8aeb60ae65405519c71665668762ec64f7feba48c80356b766cab4c8a95a67c0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9469f319-b22a-4ff6-89db-698aa1e3f688.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9469f319-b22a-4ff6-89db-698aa1e3f688.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9469f319-b22a-4ff6-89db-698aa1e3f688
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8aeb60ae65405519c71665668762ec64f7feba48c80356b766cab4c8a95a67c0","name":"Robert Penner","registered_at":"2026-06-17T17:30:22Z","symbol":"NIM1467565","token_address":"0xeaa6e751a7069d996683605d64852170c30b2843","type":"artist","uuid":"9469f319-b22a-4ff6-89db-698aa1e3f688"}
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 0x8aeb60ae65405519c71665668762ec64f7feba48c80356b766cab4c8a95a67c0. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9469f319-b22a-4ff6-89db-698aa1e3f688.json and https://artists.proofprofile.net/proofs/artist/9469f319-b22a-4ff6-89db-698aa1e3f688.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x8aeb60ae65405519c71665668762ec64f7feba48c80356b766cab4c8a95a67c0","name":"Robert Penner","registered_at":"2026-06-17T17:30:22Z","symbol":"NIM1467565","token_address":"0xeaa6e751a7069d996683605d64852170c30b2843","type":"artist","uuid":"9469f319-b22a-4ff6-89db-698aa1e3f688"}