Alan Ladd
type: MusicGroup
genre: spoken word
description: Alan Walbridge Ladd (September 3, 1913 – January 29, 1964) was an American actor and film producer. Ladd found success in film in the 1940s and early 1950s, particularly in films noir and Westerns. He
popularity: 4
followers: 237
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xda5f0831679fd343bf946639051c1af61a3d2ab676bbd1499ef3207e72ea024b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4d8a9725-9aca-43dd-a5b7-b8a3100d4148.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4d8a9725-9aca-43dd-a5b7-b8a3100d4148.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4d8a9725-9aca-43dd-a5b7-b8a3100d4148
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xda5f0831679fd343bf946639051c1af61a3d2ab676bbd1499ef3207e72ea024b","name":"Alan Ladd","registered_at":"2026-06-16T16:39:22Z","symbol":"NIM1111929","token_address":"0x9e90800c7b42d4d9f2b20a04a978267faf3c6917","type":"artist","uuid":"4d8a9725-9aca-43dd-a5b7-b8a3100d4148"}
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 0xda5f0831679fd343bf946639051c1af61a3d2ab676bbd1499ef3207e72ea024b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4d8a9725-9aca-43dd-a5b7-b8a3100d4148.json and https://artists.proofprofile.net/proofs/artist/4d8a9725-9aca-43dd-a5b7-b8a3100d4148.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
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