AAK
type: MusicGroup
description: Aak (; ) is a genre of Korean court music. It is an imported form of the Chinese court music yayue, and means "elegant music". Aak was performed almost exclusively in state sacrificial rites, and in t
popularity: 2
followers: 34
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9b27a3dff261996b162be874242dc33a2c5213fb13ea9e323cde3248f24b9a77
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954008
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954008
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/332eeb7b-b2db-420a-9fba-d8501414ab6c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/332eeb7b-b2db-420a-9fba-d8501414ab6c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/332eeb7b-b2db-420a-9fba-d8501414ab6c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T21:31:27Z
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 0x9b27a3dff261996b162be874242dc33a2c5213fb13ea9e323cde3248f24b9a77. Chain 2 (Bitcoin): anchored in block 954008 (2026-06-16T21:31:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/332eeb7b-b2db-420a-9fba-d8501414ab6c.json and https://artists.proofprofile.net/proofs/artist/332eeb7b-b2db-420a-9fba-d8501414ab6c.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T21:31:27Z
album: Dj Technologic (Live)
  type: MusicAlbum
  date published: 2022-12-03
album: Baiana Bass (Remastered 2023)
  type: MusicAlbum
  date published: 2023-03-31