ondol
type: MusicGroup
description: thumbnail|400px|An illustration of the system (; , ; ) or gudeul (; ) in Korean traditional architecture is underfloor heating that uses direct heat transfer from wood smoke to heat the underside o
popularity: 8
followers: 275
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb49351f64d8263389465db3b6df535dffbf0e40a0d89807fd223e0cf6cd4651b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953877
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953877
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/04e819a1-e616-4c06-b426-0b9f3fd6c259.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/04e819a1-e616-4c06-b426-0b9f3fd6c259.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/04e819a1-e616-4c06-b426-0b9f3fd6c259
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T02:39:16Z
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 0xb49351f64d8263389465db3b6df535dffbf0e40a0d89807fd223e0cf6cd4651b. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04e819a1-e616-4c06-b426-0b9f3fd6c259.json and https://artists.proofprofile.net/proofs/artist/04e819a1-e616-4c06-b426-0b9f3fd6c259.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T02:39:16Z
album: It's Over
  type: MusicAlbum
  date published: 2023-03-17
album: Bagels for Breakfast
  type: MusicAlbum
  date published: 2023-04-07
album: Evening at El Rubicon
  type: MusicAlbum
  date published: 2023-04-28
album: Liberty City '74
  type: MusicAlbum
  date published: 2023-05-19
album: Moore
  type: MusicAlbum
  date published: 2023-06-23
album: Magic Hour
  type: MusicAlbum
  date published: 2023-07-14
  track: Magic Hour
    type: MusicRecording
    duration: PT2M38S
    duration ms: 158377
    explicit: false
    by artist: ondol
    in album: Magic Hour
      type: MusicAlbum
      date published: 2023-07-14
    isrc code: DEQ022382478
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-11T01:06:15+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x90591747292c40f87332b0456a6ab33ae2b22896612587112be85a79c95220a3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 953528
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/953528
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ022382478
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T15:41:10Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x90591747292c40f87332b0456a6ab33ae2b22896612587112be85a79c95220a3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ022382478.
      date published: 2026-06-13T15:41:10Z
    audio: Magic Hour
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 145.218
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.814
      additional property: Energy
        type: PropertyValue
        value: 0.498
      additional property: Speechiness
        type: PropertyValue
        value: 0.043
      additional property: Acousticness
        type: PropertyValue
        value: 0.52
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.855
      additional property: Liveness
        type: PropertyValue
        value: 0.101
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.391
      additional property: Loudness (dB)
        type: PropertyValue
        value: -14.477
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: gradually
  type: MusicAlbum
  date published: 2023-08-11