EPEX
type: MusicGroup
genre: k-pop
description: Epex (; stylized in all caps) is a South Korean boy band formed and managed by C9 Entertainment. The group consists of seven members: Wish, Mu, A-Min, Baekseung, Ayden, Yewang, and Jeff. Originally a
popularity: 42
followers: 258600
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x590ed1f349fb198a338711029d4dc11769bc9f8f638acd113ec9c103b3a1c7e1
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/e05311a2-608f-442a-9dcd-0c4a6fc5831d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e05311a2-608f-442a-9dcd-0c4a6fc5831d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e05311a2-608f-442a-9dcd-0c4a6fc5831d
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 0x590ed1f349fb198a338711029d4dc11769bc9f8f638acd113ec9c103b3a1c7e1. 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/e05311a2-608f-442a-9dcd-0c4a6fc5831d.json and https://artists.proofprofile.net/proofs/artist/e05311a2-608f-442a-9dcd-0c4a6fc5831d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
album: EPEX - Special Message
  type: MusicAlbum
  date published: 2021-06-01
album: 1st EP Album 'Bipolar Pt.1 Prelude of Anxiety'
  type: MusicAlbum
  date published: 2021-06-08
album: 2nd EP Album ‘Bipolar Pt.2 Prelude of Love’
  type: MusicAlbum
  date published: 2021-10-26
album: 3rd EP Album Prelude of Anxiety Chapter 1. ‘21st Century Boys’
  type: MusicAlbum
  date published: 2022-04-11
album: EPEX 4th EP Album Prelude of Love Chapter 1. ‘Puppy Love’
  type: MusicAlbum
  date published: 2022-10-26
album: EPEX 5th EP Album Prelude of Love Chapter 2. 'Growing Pains'
  type: MusicAlbum
  date published: 2023-04-26
album: K-909 : Baby good night
  type: MusicAlbum
  date published: 2023-05-28
album: EPEX 6th EP Album Prelude of Anxiety Chapter 2. ‘Can We Surrender?’
  type: MusicAlbum
  date published: 2023-10-04
  track: No Roof
    type: MusicRecording
    duration: PT3M7S
    duration ms: 187991
    explicit: false
    by artist: EPEX
    in album: EPEX 6th EP Album Prelude of Anxiety Chapter 2. ‘Can We Surrender?’
      type: MusicAlbum
      date published: 2023-10-04
    genre: k-pop
    isrc code: KRA382320804
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T19:46:51+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe19be45e5714287488f84cbb4c43149255e9ce0b9bd34e671606d31bde9a3440
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957750
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957750
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA382320804
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T20:39:38Z
    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 0xe19be45e5714287488f84cbb4c43149255e9ce0b9bd34e671606d31bde9a3440. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRA382320804.
      date published: 2026-07-12T20:39:38Z
    audio: No Roof
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 157.977
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.704
      additional property: Energy
        type: PropertyValue
        value: 0.791
      additional property: Speechiness
        type: PropertyValue
        value: 0.094
      additional property: Acousticness
        type: PropertyValue
        value: 0.052
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.362
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.726
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.481
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Graduation Day
  type: MusicAlbum
  date published: 2024-02-05
album: EPEX 1st Album Youth Chapter 1 : YOUTH DAYS
  type: MusicAlbum
  date published: 2024-04-09
  track: Lay Up
    type: MusicRecording
    duration: PT2M52S
    duration ms: 172853
    explicit: false
    by artist: EPEX
    in album: EPEX 1st Album Youth Chapter 1 : YOUTH DAYS
      type: MusicAlbum
      date published: 2024-04-09
    genre: k-pop
    isrc code: KRA382402093
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-28T20:11:52+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x98a9a4cf1e3ef6aba5c2d5c804e28efe3412e9dab14fcf3bfb550fa7641d7b61
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956375
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956375
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA382402093
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T16:51:38Z
    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 0x98a9a4cf1e3ef6aba5c2d5c804e28efe3412e9dab14fcf3bfb550fa7641d7b61. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/KRA382402093.
      date published: 2026-07-02T16:51:38Z
    audio: Lay Up
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 96.031
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
      additional property: Time Signature
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: My Girl
album: EPEX 2nd Album Youth Chapter 2 : YOUTH DEFICIENCY
album: EPEX & joan 1st Digital Single ‘so nice’
album: Picasso
album: EPEX 3rd Album Youth Chapter 3 : ROMANTIC YOUTH
album: FOOL (눈물나게 고마워) [Eng Ver.]

Mode (Major/Minor)
type: PropertyValue
value: 1

Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.677

Energy
type: PropertyValue
value: 0.749

Speechiness
type: PropertyValue
value: 0.074

Acousticness
type: PropertyValue
value: 0.151

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.171

Valence (Positivity)
type: PropertyValue
value: 0.811

Loudness (dB)
type: PropertyValue
value: -3.048

Key Name
type: PropertyValue
value: F#

Mode Name
type: PropertyValue
value: Major

My Girl
type: MusicAlbum
date published: 2024-10-14

EPEX 2nd Album Youth Chapter 2 : YOUTH DEFICIENCY
type: MusicAlbum
date published: 2024-11-05

EPEX & joan 1st Digital Single ‘so nice’
type: MusicAlbum
date published: 2025-05-06

Picasso
type: MusicAlbum
date published: 2025-07-21

EPEX 3rd Album Youth Chapter 3 : ROMANTIC YOUTH
type: MusicAlbum
date published: 2025-07-28

FOOL (눈물나게 고마워) [Eng Ver.]
type: MusicAlbum
date published: 2025-09-12