Oscar Fredriks Kammarkör
type: MusicGroup
popularity: 2
followers: 246
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x00c67584426cad2a8d9dabaf89ca4c2da7d8f48f04487f50e3993c739c9b63ba
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/6e8afc97-3f7f-4a98-8180-43b8a80289d4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6e8afc97-3f7f-4a98-8180-43b8a80289d4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6e8afc97-3f7f-4a98-8180-43b8a80289d4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x00c67584426cad2a8d9dabaf89ca4c2da7d8f48f04487f50e3993c739c9b63ba","name":"Oscar Fredriks Kammarkör","registered_at":"2026-06-17T04:10:06Z","symbol":"NIM1276746","token_address":"0xa43f0e7bec24d1ad3479db0db151e59d5b173afb","type":"artist","uuid":"6e8afc97-3f7f-4a98-8180-43b8a80289d4"}
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 0x00c67584426cad2a8d9dabaf89ca4c2da7d8f48f04487f50e3993c739c9b63ba. 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/6e8afc97-3f7f-4a98-8180-43b8a80289d4.json and https://artists.proofprofile.net/proofs/artist/6e8afc97-3f7f-4a98-8180-43b8a80289d4.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x00c67584426cad2a8d9dabaf89ca4c2da7d8f48f04487f50e3993c739c9b63ba","name":"Oscar Fredriks Kammarkör","registered_at":"2026-06-17T04:10:06Z","symbol":"NIM1276746","token_address":"0xa43f0e7bec24d1ad3479db0db151e59d5b173afb","type":"artist","uuid":"6e8afc97-3f7f-4a98-8180-43b8a80289d4"}
album: Klezmer För Instrument Och Kör
  type: MusicAlbum
  date published: 2003-10-15
album: Klezmer För Instrument Och Kör
  type: MusicAlbum
  date published: 2003-10-15
album: Echoes Of Qiyan
  type: MusicAlbum
  date published: 2010-02-15
album: Ingen stund är såsom denna
  type: MusicAlbum
  date published: 2020-12-29
track: Ave verum corpus, K. 618
  type: MusicRecording
  duration: PT2M48S
  duration ms: 168226
  explicit: false
  by artist: Oscar Fredriks Vocalis
  by artist: Oscar Fredriks Kammarkör
  in album: Molanders (Originalmusiken från TV serien)
    type: MusicAlbum
    date published: 2013-10-09
  isrc code: HKI191323309
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T11:47:40+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xb0dff43abe8908a6290e1a4f30572542b13a0eba0279c3ec7f131963db444b8c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960397
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960397
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191323309
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T12:24:41Z
  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 0xb0dff43abe8908a6290e1a4f30572542b13a0eba0279c3ec7f131963db444b8c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191323309 — a six-check JSON result.
    date published: 2026-07-31T12:24:41Z
  audio: Ave verum corpus, K. 618
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 94.132
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.164
    additional property: Energy
      type: PropertyValue
      value: 0.225
    additional property: Speechiness
      type: PropertyValue
      value: 0.044
    additional property: Acousticness
      type: PropertyValue
      value: 0.925
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.939
    additional property: Liveness
      type: PropertyValue
      value: 0.111
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.038
    additional property: Loudness (dB)
      type: PropertyValue
      value: -20.41
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major