Sebastian Sander
type: MusicGroup
popularity: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x41d4075cfcf2585bcb2fe21a08ed57a696f2c9471c72f6d89042eb9700bf83d2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e7ae5b54-2d7e-4a82-acfe-3e1596d187b8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e7ae5b54-2d7e-4a82-acfe-3e1596d187b8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e7ae5b54-2d7e-4a82-acfe-3e1596d187b8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x41d4075cfcf2585bcb2fe21a08ed57a696f2c9471c72f6d89042eb9700bf83d2","name":"Sebastian Sander","registered_at":"2026-06-21T09:18:12Z","symbol":"NIM1886325","token_address":"0x8adbeb7f603ed846230cbe8d131a9b1fe95bb85e","type":"artist","uuid":"e7ae5b54-2d7e-4a82-acfe-3e1596d187b8"}
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 0x41d4075cfcf2585bcb2fe21a08ed57a696f2c9471c72f6d89042eb9700bf83d2. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7ae5b54-2d7e-4a82-acfe-3e1596d187b8.json and https://artists.proofprofile.net/proofs/artist/e7ae5b54-2d7e-4a82-acfe-3e1596d187b8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T11:50:32Z
  text: {"copyright_id":"0x41d4075cfcf2585bcb2fe21a08ed57a696f2c9471c72f6d89042eb9700bf83d2","name":"Sebastian Sander","registered_at":"2026-06-21T09:18:12Z","symbol":"NIM1886325","token_address":"0x8adbeb7f603ed846230cbe8d131a9b1fe95bb85e","type":"artist","uuid":"e7ae5b54-2d7e-4a82-acfe-3e1596d187b8"}
album: Otaku Piano
  type: MusicAlbum
  date published: 2025-03-28
album: Caught The Breeze
  type: MusicAlbum
  date published: 2025-03-28
album: Akihabara Sunshine: Anime Piano Melodies
  type: MusicAlbum
  date published: 2025-04-04
album: Piano Echoes in the Dark
  type: MusicAlbum
  date published: 2025-04-04