John Martin Bengtsson
type: MusicGroup
genre: folk pop
genre: swedish ballads
popularity: 4
followers: 337
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x332e3c121ba9564de73306a101778cb84ab401a506393abc424f3f28ed4bc4d6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9995f46f-bfd5-4c47-b96c-5c1aa40116e3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9995f46f-bfd5-4c47-b96c-5c1aa40116e3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9995f46f-bfd5-4c47-b96c-5c1aa40116e3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x332e3c121ba9564de73306a101778cb84ab401a506393abc424f3f28ed4bc4d6","name":"John Martin Bengtsson","registered_at":"2026-06-17T19:13:29Z","symbol":"NIM1492177","token_address":"0x9f56ee291e6ecacf0593a0847a6b8a841d9ffcba","type":"artist","uuid":"9995f46f-bfd5-4c47-b96c-5c1aa40116e3"}
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 0x332e3c121ba9564de73306a101778cb84ab401a506393abc424f3f28ed4bc4d6. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9995f46f-bfd5-4c47-b96c-5c1aa40116e3.json and https://artists.proofprofile.net/proofs/artist/9995f46f-bfd5-4c47-b96c-5c1aa40116e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x332e3c121ba9564de73306a101778cb84ab401a506393abc424f3f28ed4bc4d6","name":"John Martin Bengtsson","registered_at":"2026-06-17T19:13:29Z","symbol":"NIM1492177","token_address":"0x9f56ee291e6ecacf0593a0847a6b8a841d9ffcba","type":"artist","uuid":"9995f46f-bfd5-4c47-b96c-5c1aa40116e3"}
album: Tillfällen i livet
  type: MusicAlbum
  date published: 2016-02-20
album: Tillfällen i livet
  type: MusicAlbum
  date published: 2017-09-25
album: It´s All About Christmas
  type: MusicAlbum
  date published: 2017-11-29
album: The Impossible Dream (The Quest)
  type: MusicAlbum
  date published: 2019-11-21
album: O helga natt
  type: MusicAlbum
  date published: 2019-12-12
album: Parts
  type: MusicAlbum
  date published: 2021-03-11
album: Parts
  type: MusicAlbum
  date published: 2021-03-11
album: Parts
  type: MusicAlbum
  date published: 2022-07-18
album: The Oceans Part
  type: MusicAlbum
  date published: 2025-07-19
album: ´Til I Hear You Sing
  type: MusicAlbum
  date published: 2025-09-19