Sandra Kirsch
type: MusicGroup
popularity: 8
followers: 278
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2461518f4245b6b15fdb20ad73f54b9ce252523146edf5b331624e936712ba80
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/43f43613-4ceb-4a41-a773-aca66943e4af.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/43f43613-4ceb-4a41-a773-aca66943e4af.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/43f43613-4ceb-4a41-a773-aca66943e4af
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2461518f4245b6b15fdb20ad73f54b9ce252523146edf5b331624e936712ba80","name":"Sandra Kirsch","registered_at":"2026-06-16T13:18:05Z","symbol":"NIM1063907","token_address":"0xf05df7dfafc1d6a3e4ec2d20e92c0c47b4782d9d","type":"artist","uuid":"43f43613-4ceb-4a41-a773-aca66943e4af"}
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 0x2461518f4245b6b15fdb20ad73f54b9ce252523146edf5b331624e936712ba80. 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/43f43613-4ceb-4a41-a773-aca66943e4af.json and https://artists.proofprofile.net/proofs/artist/43f43613-4ceb-4a41-a773-aca66943e4af.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x2461518f4245b6b15fdb20ad73f54b9ce252523146edf5b331624e936712ba80","name":"Sandra Kirsch","registered_at":"2026-06-16T13:18:05Z","symbol":"NIM1063907","token_address":"0xf05df7dfafc1d6a3e4ec2d20e92c0c47b4782d9d","type":"artist","uuid":"43f43613-4ceb-4a41-a773-aca66943e4af"}
album: Lass mich nie mehr los
  type: MusicAlbum
  date published: 2021-10-01
  track: Lass mich nie mehr los
    type: MusicRecording
    duration: PT3M33S
    duration ms: 213712
    explicit: false
    by artist: Sandra Kirsch
    in album: Lass mich nie mehr los
      type: MusicAlbum
      date published: 2021-10-01
    isrc code: CH6542177876
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T02:46:11+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4136bee243cf67caa99bcbf3308001c8c7f85937a939bb39a9be1c33f90f3b88
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958480
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958480
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542177876
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T02:58:58Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4136bee243cf67caa99bcbf3308001c8c7f85937a939bb39a9be1c33f90f3b88. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/CH6542177876.
      date published: 2026-07-18T02:58:58Z
    audio: Lass mich nie mehr los
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 128.029
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.705
      additional property: Energy
        type: PropertyValue
        value: 0.844
      additional property: Speechiness
        type: PropertyValue
        value: 0.04
      additional property: Acousticness
        type: PropertyValue
        value: 0.377
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.212
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.263
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.292
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Ohne Musik
  type: MusicAlbum
  date published: 2022-02-04
album: Ohne dich
  type: MusicAlbum
  date published: 2022-07-22
  track: Ohne dich
    type: MusicRecording
    duration: PT3M38S
    duration ms: 218741
    explicit: false
    by artist: Sandra Kirsch
    in album: Ohne dich
      type: MusicAlbum
      date published: 2022-07-22
    isrc code: DEYW82204668
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T13:20:03+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc3ed4d0a969a137b72a119c218ac133837a3ca71e0c1b4b1ec6189f891969503
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958749
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958749
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEYW82204668
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T16:23:22Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ed4d0a969a137b72a119c218ac133837a3ca71e0c1b4b1ec6189f891969503. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:23:22Z), 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/DEYW82204668.
      date published: 2026-07-19T16:23:22Z
    audio: Ohne dich
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 136.274
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.553
      additional property: Energy
        type: PropertyValue
        value: 0.535
      additional property: Speechiness
        type: PropertyValue
        value: 0.044
      additional property: Acousticness
        type: PropertyValue
        value: 0.041
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.188
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Es ist nie zu spät
album: Ohne Worte
album: Ohne Dich (Mathias Herbert Remix)
album: Frühchensong - Unser kleiner Held
album: Piraten des Glücks
album: Zug des Lebens
album: Hey du

Valence (Positivity)
type: PropertyValue
value: 0.204

Loudness (dB)
type: PropertyValue
value: -10.014

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Minor

Es ist nie zu spät
type: MusicAlbum
date published: 2022-10-14

Ohne Worte
type: MusicAlbum
date published: 2022-12-31

Ohne Dich (Mathias Herbert Remix)
type: MusicAlbum
date published: 2023-06-15

Frühchensong - Unser kleiner Held
type: MusicAlbum
date published: 2023-07-14

Piraten des Glücks
type: MusicAlbum
date published: 2024-05-17

Zug des Lebens
type: MusicAlbum
date published: 2025-01-17

Hey du
type: MusicAlbum
date published: 2025-08-15