Rika
type: MusicGroup
genre: indie punk
genre: math rock
genre: midwest emo
genre: slowcore
popularity: 6
followers: 690
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x99026f605d8afb7ead1a84f19272b81bd4914fde4fcca3395521d0b53af4270f
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f1e17f2d-6d42-4db7-b087-39c047e03d73.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f1e17f2d-6d42-4db7-b087-39c047e03d73.json
additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99026f605d8afb7ead1a84f19272b81bd4914fde4fcca3395521d0b53af4270f. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1e17f2d-6d42-4db7-b087-39c047e03d73.json and https://artists.proofprofile.net/proofs/artist/f1e17f2d-6d42-4db7-b087-39c047e03d73.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
album: How to Draw a River, Step by Step
  type: MusicAlbum
  date published: 2013-02-15
album: Rika & Everton Split
  type: MusicAlbum
  date published: 2015-04-02
album: Tired Hands
  type: MusicAlbum
  date published: 2015-09-25
album: How to Draw a River, Step by Step
  type: MusicAlbum
  date published: 2016-01-15
album: 36
  type: MusicAlbum
  date published: 2019-05-05
album: 35
  type: MusicAlbum
  date published: 2019-12-07
album: Test of Time
  type: MusicAlbum
  date published: 2021-09-15
album: thirty seven
  type: MusicAlbum
  date published: 2021-11-26
album: 38 (LIVE at Kobe Live House BIG APPLE)
  type: MusicAlbum
  date published: 2022-11-27
album: I don't care（隨便說）
  type: MusicAlbum
  date published: 2022-11-30
album: 金牛座
  type: MusicAlbum
  date published: 2023-06-06
album: 美式先生与拿铁小姐
  type: MusicAlbum
  date published: 2023-09-22
album: 39
  type: MusicAlbum
  date published: 2024-05-18
album: story of heart and heart
  type: MusicAlbum
  date published: 2024-12-26
album: You are not alone / totsukitooka (2021 ohana)
  type: MusicAlbum
  date published: 2025-01-18
album: wan note
  type: MusicAlbum
  date published: 2025-01-22
album: wan note
  type: MusicAlbum
  date published: 2025-01-22
album: 40
  type: MusicAlbum
  date published: 2025-05-24
album: Start with One Step
  type: MusicAlbum
  date published: 2025-07-01
track: Mein Kleines Herz

Mein Kleines Herz
type: MusicRecording
duration: PT5M28S
duration ms: 328000
explicit: false
by artist: Der Ü
by artist: Rika
in album: Mein Kleines Herz
  type: MusicAlbum
  date published: 2023-10-20
popularity: 15
isrc code: QZWFJ2347631
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T22:12:17+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x656f9907865af06a81ce97e03f5229eeb091b2a15eacfd8691625b4e2287f2ab
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFJ2347631
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656f9907865af06a81ce97e03f5229eeb091b2a15eacfd8691625b4e2287f2ab. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZWFJ2347631.
  date published: 2026-07-02T05:09:12Z
audio: Mein Kleines Herz
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 131.503
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.595
  additional property: Energy
    type: PropertyValue
    value: 0.432
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.713
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.138
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.159
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.03
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major