David Castañeda
type: MusicGroup
description: David Castañeda Jr. (born October 24, 1989) is an American actor. In 2019, Castañeda began portraying Diego Hargreeves in the Netflix series The Umbrella Academy. Early life Castañeda was born Octobe
popularity: 3
followers: 139
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa8b7a30ffa7c06c87319e44b73e27e222f985c599d128a6bb9a9157b676c0d6e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954516
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954516
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a0f5dc45-07c9-4eb4-b2b2-0d73a4285fb3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a0f5dc45-07c9-4eb4-b2b2-0d73a4285fb3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a0f5dc45-07c9-4eb4-b2b2-0d73a4285fb3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T07:04:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa8b7a30ffa7c06c87319e44b73e27e222f985c599d128a6bb9a9157b676c0d6e","name":"David Castañeda","registered_at":"2026-06-20T05:41:03Z","symbol":"NIM1529439","token_address":"0x8896276374f13abbf356f07ae6ad57819c933fda","type":"artist","uuid":"a0f5dc45-07c9-4eb4-b2b2-0d73a4285fb3"}
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 0xa8b7a30ffa7c06c87319e44b73e27e222f985c599d128a6bb9a9157b676c0d6e. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a0f5dc45-07c9-4eb4-b2b2-0d73a4285fb3.json and https://artists.proofprofile.net/proofs/artist/a0f5dc45-07c9-4eb4-b2b2-0d73a4285fb3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T07:04:44Z
  text: {"copyright_id":"0xa8b7a30ffa7c06c87319e44b73e27e222f985c599d128a6bb9a9157b676c0d6e","name":"David Castañeda","registered_at":"2026-06-20T05:41:03Z","symbol":"NIM1529439","token_address":"0x8896276374f13abbf356f07ae6ad57819c933fda","type":"artist","uuid":"a0f5dc45-07c9-4eb4-b2b2-0d73a4285fb3"}
album: En Sann Verklighet
  type: MusicAlbum
  date published: 2010-07-24
album: En Sann Verklighet
  type: MusicAlbum
  date published: 2010-07-24
album: Se vår Gud
  type: MusicAlbum
  date published: 2024-08-23