Jonas Källstrand
type: MusicGroup
genre: indie folk
popularity: 2
followers: 124
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4213f18484d90d2ac902c00054fc3f060f3c448a18925375bd7d06883603242b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d52cfba2-194b-488c-86f3-ea17ba669bdc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d52cfba2-194b-488c-86f3-ea17ba669bdc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d52cfba2-194b-488c-86f3-ea17ba669bdc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4213f18484d90d2ac902c00054fc3f060f3c448a18925375bd7d06883603242b","name":"Jonas Källstrand","registered_at":"2026-06-21T02:32:28Z","symbol":"NIM1791830","token_address":"0x2e14f77515656d15fa5137bcd889041788d4356e","type":"artist","uuid":"d52cfba2-194b-488c-86f3-ea17ba669bdc"}
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 0x4213f18484d90d2ac902c00054fc3f060f3c448a18925375bd7d06883603242b. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d52cfba2-194b-488c-86f3-ea17ba669bdc.json and https://artists.proofprofile.net/proofs/artist/d52cfba2-194b-488c-86f3-ea17ba669bdc.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x4213f18484d90d2ac902c00054fc3f060f3c448a18925375bd7d06883603242b","name":"Jonas Källstrand","registered_at":"2026-06-21T02:32:28Z","symbol":"NIM1791830","token_address":"0x2e14f77515656d15fa5137bcd889041788d4356e","type":"artist","uuid":"d52cfba2-194b-488c-86f3-ea17ba669bdc"}
album: Evolution / Alley Road
  type: MusicAlbum
  date published: 2017-09-11
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  type: MusicAlbum
  date published: 2018-04-18
album: The House My Parents Later Sold
  type: MusicAlbum
  date published: 2018-08-04
album: The House My Parents Later Sold
  type: MusicAlbum
  date published: 2018-08-04
album: Dynamite
  type: MusicAlbum
  date published: 2019-03-01
album: Evolution / Alley Road
  type: MusicAlbum
  date published: 2019-06-14
album: Nothing That I Thought I Would Show
  type: MusicAlbum
  date published: 2019-11-05
album: What You Need & Where You Go
  type: MusicAlbum
  date published: 2020-11-13
album: Dad
  type: MusicAlbum
  date published: 2021-01-29
album: Let Them In
  type: MusicAlbum
  date published: 2025-06-23
album: Let Them In (Instrumental Version)
  type: MusicAlbum
  date published: 2025-06-25