Event Horizon
type: MusicGroup
genre: celtic
description: thumb |Diagram of the event horizon of a Schwarzschild black hole In astrophysics, an event horizon is a boundary in spacetime beyond which no signal can ever reach a given observer. Wolfgang Rindler
popularity: 2
followers: 238
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xda5bb95a3d2430fa0d6e644fef4b1c245211b377fd0a37b5208096c9b28bc5c4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953909
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953909
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/173a3d40-b040-4367-ac13-02f2ae653ec7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/173a3d40-b040-4367-ac13-02f2ae653ec7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/173a3d40-b040-4367-ac13-02f2ae653ec7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:53:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xda5bb95a3d2430fa0d6e644fef4b1c245211b377fd0a37b5208096c9b28bc5c4","name":"Event Horizon","registered_at":"2026-06-15T21:33:28Z","symbol":"NIM0838402","token_address":"0xba6327652f69533311044915cfdab76ff63d3858","type":"artist","uuid":"173a3d40-b040-4367-ac13-02f2ae653ec7"}
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 0xda5bb95a3d2430fa0d6e644fef4b1c245211b377fd0a37b5208096c9b28bc5c4. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/173a3d40-b040-4367-ac13-02f2ae653ec7.json and https://artists.proofprofile.net/proofs/artist/173a3d40-b040-4367-ac13-02f2ae653ec7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0xda5bb95a3d2430fa0d6e644fef4b1c245211b377fd0a37b5208096c9b28bc5c4","name":"Event Horizon","registered_at":"2026-06-15T21:33:28Z","symbol":"NIM0838402","token_address":"0xba6327652f69533311044915cfdab76ff63d3858","type":"artist","uuid":"173a3d40-b040-4367-ac13-02f2ae653ec7"}
album: Event Horizon
  type: MusicAlbum
  date published: 2017-12-15