Dan Rosen
type: MusicGroup
description: Dan Rosen (born November 11, 1963) is an American screenwriter and film director. Rosen is best known for the films The Last Supper, which he wrote, as well as Freeloaders and The Curve, both of whic
popularity: 2
followers: 73
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8261bff7d7c22ba833fd56003d244dd4d8e4485b919eae94814f86ff1450a728
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/80c7af11-7121-42f8-acb5-dc8e3fbb564a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/80c7af11-7121-42f8-acb5-dc8e3fbb564a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/80c7af11-7121-42f8-acb5-dc8e3fbb564a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8261bff7d7c22ba833fd56003d244dd4d8e4485b919eae94814f86ff1450a728","name":"Dan Rosen","registered_at":"2026-06-17T10:28:11Z","symbol":"NIM1366909","token_address":"0xf875d97b515ffd45150b87d8bdb8c24a494ca469","type":"artist","uuid":"80c7af11-7121-42f8-acb5-dc8e3fbb564a"}
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 0x8261bff7d7c22ba833fd56003d244dd4d8e4485b919eae94814f86ff1450a728. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80c7af11-7121-42f8-acb5-dc8e3fbb564a.json and https://artists.proofprofile.net/proofs/artist/80c7af11-7121-42f8-acb5-dc8e3fbb564a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x8261bff7d7c22ba833fd56003d244dd4d8e4485b919eae94814f86ff1450a728","name":"Dan Rosen","registered_at":"2026-06-17T10:28:11Z","symbol":"NIM1366909","token_address":"0xf875d97b515ffd45150b87d8bdb8c24a494ca469","type":"artist","uuid":"80c7af11-7121-42f8-acb5-dc8e3fbb564a"}
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