Fernando de Rojas
type: MusicGroup
description: Fernando de Rojas (c. 1465/73, in La Puebla de Montalbán, Toledo, Spain – April 1541, in Talavera de la Reina, Toledo, Spain) was a Spanish author and dramatist, known for his only surviving work, La
popularity: 3
followers: 25
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x953c7e7be7ba1e6c1547276b962f1601601c5486a8edc594f2e375bc23300c97
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/55045132-c5b5-4efa-8e21-82aa2f74966b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/55045132-c5b5-4efa-8e21-82aa2f74966b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/55045132-c5b5-4efa-8e21-82aa2f74966b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x953c7e7be7ba1e6c1547276b962f1601601c5486a8edc594f2e375bc23300c97","name":"Fernando de Rojas","registered_at":"2026-06-16T19:18:24Z","symbol":"NIM1149870","token_address":"0x1b159ba706861c1a2ad054f6ff2d7c91eee8f133","type":"artist","uuid":"55045132-c5b5-4efa-8e21-82aa2f74966b"}
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 0x953c7e7be7ba1e6c1547276b962f1601601c5486a8edc594f2e375bc23300c97. 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/55045132-c5b5-4efa-8e21-82aa2f74966b.json and https://artists.proofprofile.net/proofs/artist/55045132-c5b5-4efa-8e21-82aa2f74966b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x953c7e7be7ba1e6c1547276b962f1601601c5486a8edc594f2e375bc23300c97","name":"Fernando de Rojas","registered_at":"2026-06-16T19:18:24Z","symbol":"NIM1149870","token_address":"0x1b159ba706861c1a2ad054f6ff2d7c91eee8f133","type":"artist","uuid":"55045132-c5b5-4efa-8e21-82aa2f74966b"}
album: La Celestina
  type: MusicAlbum
  date published: 2020-03-16