markcato
type: MusicGroup
popularity: 20
followers: 2003
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x92f5338e1104df1125e38b647fafcd5ab746f41809a5afd6caf162607541a632
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953803
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953803
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e58c0594-1a29-432c-a854-73bc40c20388.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e58c0594-1a29-432c-a854-73bc40c20388.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e58c0594-1a29-432c-a854-73bc40c20388
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T15:41:00Z
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 0x92f5338e1104df1125e38b647fafcd5ab746f41809a5afd6caf162607541a632. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e58c0594-1a29-432c-a854-73bc40c20388.json and https://artists.proofprofile.net/proofs/artist/e58c0594-1a29-432c-a854-73bc40c20388.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T15:41:00Z
album: late night
  type: MusicAlbum
  date published: 2021-04-29
album: Shades
  type: MusicAlbum
  date published: 2021-08-06
album: Rays
  type: MusicAlbum
  date published: 2022-03-24
album: Sunny
  type: MusicAlbum
  date published: 2022-06-16
album: Hey
  type: MusicAlbum
  date published: 2022-06-30
album: Kazuha Teaser Lofi Version - Drifter's Destiny
  type: MusicAlbum
  date published: 2022-07-20
  track: Kazuha Teaser Lofi Version - Drifter's Destiny
    type: MusicRecording
    duration: PT2M27S
    duration ms: 147750
    explicit: false
    by artist: markcato
    in album: Kazuha Teaser Lofi Version - Drifter's Destiny
      type: MusicAlbum
      date published: 2022-07-20
    isrc code: QZPJ32183494
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T04:44:46+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x472445af9586a97ce30161d7ac3dc349ada7b01a82ccd6d44513c1852365388a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32183494
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0x472445af9586a97ce30161d7ac3dc349ada7b01a82ccd6d44513c1852365388a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZPJ32183494.
      date published: 2026-07-04T10:04:33Z
    audio: Kazuha Teaser Lofi Version - Drifter's Destiny
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 60.073
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.51
      additional property: Energy
        type: PropertyValue
        value: 0.46
      additional property: Speechiness
        type: PropertyValue
        value: 0.348
      additional property: Acousticness
        type: PropertyValue
        value: 0.784
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.873
      additional property: Liveness
        type: PropertyValue
        value: 0.309
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.39
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.238
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Tangerine
  type: MusicAlbum
  date published: 2022-07-30
album: Fall of Maples Violin Version (From "Genshin Impact")
  type: MusicAlbum
  date published: 2022-08-05
album: Dragonspine Lofi - Glistening Shards
  type: MusicAlbum
  date published: 2022-08-11
album: Shadow in the Rain (Yelan Theme Music) (Lofi Version)
  type: MusicAlbum
  date published: 2022-08-19
  track: Shadow in the Rain (Yelan Theme Music) - Lofi Version
    type: MusicRecording
    duration: PT3M10S
    duration ms: 190616
    explicit: false
    by artist: markcato
    in album: Shadow in the Rain (Yelan Theme Music) (Lofi Version)
      type: MusicAlbum
      date published: 2022-08-19
    isrc code: UKXN22218361
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T12:16:29+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4930e7b768980425a6efa305435328dcc9670b7e0535aee3c6f878b2ccb3f182
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956545
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956545
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKXN22218361
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T19:59:51Z
    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 0x4930e7b768980425a6efa305435328dcc9670b7e0535aee3c6f878b2ccb3f182. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UKXN22218361.
      date published: 2026-07-03T19:59:51Z
    audio: Shadow in the Rain (Yelan Theme Music) - Lofi Version
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 80.016
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      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: Konda Village Theme Epic Version (From "Genshin Impact")
album: Sumeru Tavern Theme
album: Vimara Village Theme Lofi Version
album: Steamed Buns
album: Night Under Clouds
album: Bossa Sunrise
album: Nocturnal Illumination Lofi Version

Danceability
type: PropertyValue
value: 0.719

Energy
type: PropertyValue
value: 0.22

Speechiness
type: PropertyValue
value: 0.051

Acousticness
type: PropertyValue
value: 0.663

Instrumentalness
type: PropertyValue
value: 0.922

Liveness
type: PropertyValue
value: 0.13

Valence (Positivity)
type: PropertyValue
value: 0.229

Loudness (dB)
type: PropertyValue
value: -9.371

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Minor

Konda Village Theme Epic Version (From "Genshin Impact")
type: MusicAlbum
date published: 2022-08-31

Sumeru Tavern Theme
type: MusicAlbum
date published: 2022-10-04

Vimara Village Theme Lofi Version
type: MusicAlbum
date published: 2023-02-22

Steamed Buns
type: MusicAlbum
date published: 2023-04-04

Night Under Clouds
type: MusicAlbum
date published: 2023-05-24

Bossa Sunrise
type: MusicAlbum
date published: 2023-07-19

Nocturnal Illumination Lofi Version
type: MusicAlbum
date published: 2024-01-30