Chaeum
type: MusicGroup
popularity: 47
followers: 190
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x81b28d76aa0daff2494c4d82b1eeea6604293422479c0ff05f6551f94b12e5e4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/693f0e1d-a023-460b-b219-116fb29cb3e7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/693f0e1d-a023-460b-b219-116fb29cb3e7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/693f0e1d-a023-460b-b219-116fb29cb3e7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
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 0x81b28d76aa0daff2494c4d82b1eeea6604293422479c0ff05f6551f94b12e5e4. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/693f0e1d-a023-460b-b219-116fb29cb3e7.json and https://artists.proofprofile.net/proofs/artist/693f0e1d-a023-460b-b219-116fb29cb3e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
album: Vacancy
  type: MusicAlbum
  date published: 2022-10-18
album: Vacancy pt.2
  type: MusicAlbum
  date published: 2022-10-27
album: Vacancy pt.3
  type: MusicAlbum
  date published: 2022-11-08
album: Vacancy pt.4
  type: MusicAlbum
  date published: 2022-11-14
album: Chaeum
  type: MusicAlbum
  date published: 2022-11-21
album: Battery
  type: MusicAlbum
  date published: 2023-02-23
album: Battery Pt.2
  type: MusicAlbum
  date published: 2023-02-28
album: Battery Pt.3
  type: MusicAlbum
  date published: 2023-03-21
album: Battery Pt.4
  type: MusicAlbum
  date published: 2023-06-01
album: Chaeum
  type: MusicAlbum
  date published: 2023-06-14
album: Melodies of the Cosmos
  type: MusicAlbum
  date published: 2023-08-14