OpKa
type: MusicGroup
popularity: 3
followers: 22
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbd7b7d66fd4fa2e5a459f9ba79d535f9b24c20238f5b6df5aa15b51f115ac635
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/755d36dd-02ca-4e85-b0b8-cc8b1e709c86.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/755d36dd-02ca-4e85-b0b8-cc8b1e709c86.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/755d36dd-02ca-4e85-b0b8-cc8b1e709c86
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
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 0xbd7b7d66fd4fa2e5a459f9ba79d535f9b24c20238f5b6df5aa15b51f115ac635. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/755d36dd-02ca-4e85-b0b8-cc8b1e709c86.json and https://artists.proofprofile.net/proofs/artist/755d36dd-02ca-4e85-b0b8-cc8b1e709c86.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: Monster
  type: MusicAlbum
  date published: 2025-01-06
album: 눈물의 끝에서
  type: MusicAlbum
  date published: 2025-01-28
album: Make Happy
  type: MusicAlbum
  date published: 2025-02-18
album: SMILE
  type: MusicAlbum
  date published: 2025-02-21
album: Galaxy
  type: MusicAlbum
  date published: 2025-02-22
album: 2/21/25 | Journal Album
  type: MusicAlbum
  date published: 2025-02-25
album: REALITY
  type: MusicAlbum
  date published: 2025-02-27
album: Dopamine
  type: MusicAlbum
  date published: 2025-03-11
album: Need No Liars | Jornual Album
  type: MusicAlbum
  date published: 2025-03-15
album: ICU
  type: MusicAlbum
  date published: 2025-03-19
album: Everybody Hates You
  type: MusicAlbum
  date published: 2025-03-21
album: Flowers For The Casket
  type: MusicAlbum
  date published: 2025-05-05
album: Flowers For The Casket
  type: MusicAlbum
  date published: 2025-05-05
album: Holy Fiction
  type: MusicAlbum
  date published: 2025-05-15
album: freak
  type: MusicAlbum
  date published: 2025-06-10
album: Memory
  type: MusicAlbum
  date published: 2025-06-24
  track: Memory
    type: MusicRecording
    duration: PT3M6S
    duration ms: 186479
    explicit: false
    by artist: OpKa
    in album: Memory
      type: MusicAlbum
      date published: 2025-06-24
    isrc code: QZTAZ2562185
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T02:17:40+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe664bba851bf2de370b534f934ff6059cd6dc9c2d8fe98af8a058045af931c6b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAZ2562185
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 0xe664bba851bf2de370b534f934ff6059cd6dc9c2d8fe98af8a058045af931c6b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTAZ2562185.
      date published: 2026-07-05T10:01:46Z
    audio: Memory
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 148.063
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.559
      additional property: Energy
        type: PropertyValue
        value: 0.402
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.001
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.132
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.138
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.474
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Immolation
  type: MusicAlbum
  date published: 2025-07-01
album: Remember
  type: MusicAlbum
  date published: 2025-07-04
album: My Friends are Gone
  type: MusicAlbum
  date published: 2025-07-09
album: HAPPY
  type: MusicAlbum
  date published: 2025-08-02
album: Friends
  type: MusicAlbum
  date published: 2025-08-20
album: Cynical
  type: MusicAlbum
  date published: 2025-09-11
  track: Cynical
    type: MusicRecording
    duration: PT3M41S
    duration ms: 221466
    explicit: false
    by artist: OpKa
    in album: Cynical
      type: MusicAlbum
      date published: 2025-09-11
    isrc code: QZZ782585477
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T01:05:27+00:00
    additional property: CopyrightChainExplorerURL
    additional property: OTSHash
    additional property: OTSBitcoinBlock
    additional property: OTSBitcoinBlockVerifyURL
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Cynical
album: BREAK MY HEART
album: Jekyll and Hyde
album: MY FRIENDS MISS THE OLD ME : ANTIBIOTICS
album: My Name Is Shadow
album: I Miss Me Too

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0xcf588c986eeb435fdb0f3bf28de79481a3330e73e00b619b9ec5b5dbc1773946

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 958484

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/958484

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ782585477

OTSTimestamp
type: PropertyValue
value: 2026-07-18T03:34:53Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf588c986eeb435fdb0f3bf28de79481a3330e73e00b619b9ec5b5dbc1773946. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZZ782585477.
date published: 2026-07-18T03:34:53Z

Cynical
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 151.895
additional property: Musical Key
  type: PropertyValue
  value: 0
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.333
additional property: Energy
  type: PropertyValue
  value: 0.627
additional property: Speechiness
  type: PropertyValue
  value: 0.035
additional property: Acousticness
  type: PropertyValue
  value: 0.002
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.107
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.122
additional property: Loudness (dB)
  type: PropertyValue
  value: -7.331
additional property: Key Name
  type: PropertyValue
  value: C
additional property: Mode Name
  type: PropertyValue
  value: Major

BREAK MY HEART
type: MusicAlbum
date published: 2025-09-20

Jekyll and Hyde
type: MusicAlbum
date published: 2025-09-30

MY FRIENDS MISS THE OLD ME : ANTIBIOTICS
type: MusicAlbum
date published: 2025-10-15

My Name Is Shadow
type: MusicAlbum
date published: 2025-10-23

I Miss Me Too
type: MusicAlbum
date published: 2025-11-08