William Powell
type: MusicGroup
description: William Horatio Powell (July 29, 1892 – March 5, 1984) was an American actor, known primarily for his film career. Under contract with Metro-Goldwyn-Mayer, he was paired with Myrna Loy in 14 films, in
popularity: 8
followers: 71
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6ee168381c689eabf17d8e71e9ef7f35769e4c2f6916a3c6985ffcc660ace663
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954650
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954650
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d9273536-ad34-4577-aaab-2ace369fac3e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d9273536-ad34-4577-aaab-2ace369fac3e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d9273536-ad34-4577-aaab-2ace369fac3e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T04:51:12Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6ee168381c689eabf17d8e71e9ef7f35769e4c2f6916a3c6985ffcc660ace663","name":"William Powell","registered_at":"2026-06-21T03:43:47Z","symbol":"NIM1809325","token_address":"0xde932482a0c28747b3b09bd2201a1013f925fcbb","type":"artist","uuid":"d9273536-ad34-4577-aaab-2ace369fac3e"}
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 0x6ee168381c689eabf17d8e71e9ef7f35769e4c2f6916a3c6985ffcc660ace663. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9273536-ad34-4577-aaab-2ace369fac3e.json and https://artists.proofprofile.net/proofs/artist/d9273536-ad34-4577-aaab-2ace369fac3e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T04:51:12Z
  text: {"copyright_id":"0x6ee168381c689eabf17d8e71e9ef7f35769e4c2f6916a3c6985ffcc660ace663","name":"William Powell","registered_at":"2026-06-21T03:43:47Z","symbol":"NIM1809325","token_address":"0xde932482a0c28747b3b09bd2201a1013f925fcbb","type":"artist","uuid":"d9273536-ad34-4577-aaab-2ace369fac3e"}