Hasse Hallstrom
type: MusicGroup
popularity: 12
followers: 101
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9f3e80a152456c2af568005b127784b835e127822c651421ebac5057a5645ea2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953773
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953773
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cb2c865c-40a7-4e17-bea2-e87e99cccf93.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cb2c865c-40a7-4e17-bea2-e87e99cccf93.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cb2c865c-40a7-4e17-bea2-e87e99cccf93
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T10:40:45Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9f3e80a152456c2af568005b127784b835e127822c651421ebac5057a5645ea2","name":"Hasse Hallstrom","registered_at":"2026-06-15T01:49:36Z","symbol":"NIM0644185","token_address":"0xc04fe59baa0670b1f50421c555a6e41f8c1b9162","type":"artist","uuid":"cb2c865c-40a7-4e17-bea2-e87e99cccf93"}
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 0x9f3e80a152456c2af568005b127784b835e127822c651421ebac5057a5645ea2. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb2c865c-40a7-4e17-bea2-e87e99cccf93.json and https://artists.proofprofile.net/proofs/artist/cb2c865c-40a7-4e17-bea2-e87e99cccf93.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T10:40:45Z
  text: {"copyright_id":"0x9f3e80a152456c2af568005b127784b835e127822c651421ebac5057a5645ea2","name":"Hasse Hallstrom","registered_at":"2026-06-15T01:49:36Z","symbol":"NIM0644185","token_address":"0xc04fe59baa0670b1f50421c555a6e41f8c1b9162","type":"artist","uuid":"cb2c865c-40a7-4e17-bea2-e87e99cccf93"}
album: Det doftar evighet
  type: MusicAlbum
  date published: 1994-01-01
track: Ett arv utan like (Hur underlig är du)

Ett arv utan like (Hur underlig är du)
type: MusicRecording
duration: PT3M30S
duration ms: 210600
explicit: false
by artist: Hasse Hallstrom
by artist: IBRA-kören
by artist: Lennart Jernestrand
in album: Sjung för Guds skull
  type: MusicAlbum
  date published: 1993-01-01
isrc code: QM7281519541
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-01-28T21:45:56+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xff04942b9f591e1dabf951581a870c35d823286c44c6db2051f3d4e893a1993e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7281519541
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
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: 953513
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T12:47:07+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 0xff04942b9f591e1dabf951581a870c35d823286c44c6db2051f3d4e893a1993e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM7281519541.
  date published: 2026-06-13T12:47:07Z
audio: Ett arv utan like (Hur underlig är du)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 170.958
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.323
  additional property: Energy
    type: PropertyValue
    value: 0.375
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.907
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.153
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.501
  additional property: Loudness (dB)
    type: PropertyValue
    value: -8.868
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major