Enríquez de Valderrábano
type: MusicGroup
description: Enríquez de Valderrábano (c. 1500 – after 1557) was a Spanish vihuelist and composer. There is little biographical data on this composer of early music, but his Libro de música de vihuela intitulado S
popularity: 13
followers: 257
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x416c5218ef461b029ef94b04642e71e0f16b0771c2b7d4df5e4283214a243cf5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953807
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953807
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f2cfbe3e-3e0f-4935-bde9-3d3d339fad50.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f2cfbe3e-3e0f-4935-bde9-3d3d339fad50.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f2cfbe3e-3e0f-4935-bde9-3d3d339fad50
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T16:39:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x416c5218ef461b029ef94b04642e71e0f16b0771c2b7d4df5e4283214a243cf5","name":"Enríquez de Valderrábano","registered_at":"2026-06-15T05:55:44Z","symbol":"NIM0702947","token_address":"0x7cc32f4a69f1e0696c6754071c7bbe6efb3bfe8f","type":"artist","uuid":"f2cfbe3e-3e0f-4935-bde9-3d3d339fad50"}
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 0x416c5218ef461b029ef94b04642e71e0f16b0771c2b7d4df5e4283214a243cf5. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2cfbe3e-3e0f-4935-bde9-3d3d339fad50.json and https://artists.proofprofile.net/proofs/artist/f2cfbe3e-3e0f-4935-bde9-3d3d339fad50.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T16:39:18Z
  text: {"copyright_id":"0x416c5218ef461b029ef94b04642e71e0f16b0771c2b7d4df5e4283214a243cf5","name":"Enríquez de Valderrábano","registered_at":"2026-06-15T05:55:44Z","symbol":"NIM0702947","token_address":"0x7cc32f4a69f1e0696c6754071c7bbe6efb3bfe8f","type":"artist","uuid":"f2cfbe3e-3e0f-4935-bde9-3d3d339fad50"}
album: Silva de Sirenas
  type: MusicAlbum
  date published: 2023-03-03