송승헌
type: MusicGroup
genre: k-ballad
description: REDIRECT Song Seung-heon
popularity: 10
followers: 178
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x63d78aca9dade4d4ea76ed0d938d4b0bbc872e46644a3e4383eb81067f1aca86
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f208f12d-f582-41e8-91db-2db1d8911567.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f208f12d-f582-41e8-91db-2db1d8911567.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f208f12d-f582-41e8-91db-2db1d8911567
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x63d78aca9dade4d4ea76ed0d938d4b0bbc872e46644a3e4383eb81067f1aca86","name":"송승헌","registered_at":"2026-06-21T13:41:42Z","symbol":"NIM1937083","token_address":"0x42d48c0a6841755444014dc9a582da5b0581c147","type":"artist","uuid":"f208f12d-f582-41e8-91db-2db1d8911567"}
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 0x63d78aca9dade4d4ea76ed0d938d4b0bbc872e46644a3e4383eb81067f1aca86. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f208f12d-f582-41e8-91db-2db1d8911567.json and https://artists.proofprofile.net/proofs/artist/f208f12d-f582-41e8-91db-2db1d8911567.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x63d78aca9dade4d4ea76ed0d938d4b0bbc872e46644a3e4383eb81067f1aca86","name":"송승헌","registered_at":"2026-06-21T13:41:42Z","symbol":"NIM1937083","token_address":"0x42d48c0a6841755444014dc9a582da5b0581c147","type":"artist","uuid":"f208f12d-f582-41e8-91db-2db1d8911567"}
album: 에덴의 동쪽 2 (Original Television Soundtrack) - 세월이 가면
  type: MusicAlbum
  date published: 2008-11-11