Johan Axel Sandström
type: MusicGroup
genre: swedish ballads
popularity: 5
followers: 282
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x53df75d5ba750429c5033d96baccf8c5b9d9d1a18c97607ef75287e6e8846fca
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953907
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953907
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/16fce088-3e55-4a83-98ad-b1f4f14b9207.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/16fce088-3e55-4a83-98ad-b1f4f14b9207.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/16fce088-3e55-4a83-98ad-b1f4f14b9207
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:39:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x53df75d5ba750429c5033d96baccf8c5b9d9d1a18c97607ef75287e6e8846fca","name":"Johan Axel Sandström","registered_at":"2026-06-15T21:37:33Z","symbol":"NIM0839381","token_address":"0xda148312c09ba73961d8a24d4e8f11c8f3bb663a","type":"artist","uuid":"16fce088-3e55-4a83-98ad-b1f4f14b9207"}
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 0x53df75d5ba750429c5033d96baccf8c5b9d9d1a18c97607ef75287e6e8846fca. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16fce088-3e55-4a83-98ad-b1f4f14b9207.json and https://artists.proofprofile.net/proofs/artist/16fce088-3e55-4a83-98ad-b1f4f14b9207.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:39:24Z
  text: {"copyright_id":"0x53df75d5ba750429c5033d96baccf8c5b9d9d1a18c97607ef75287e6e8846fca","name":"Johan Axel Sandström","registered_at":"2026-06-15T21:37:33Z","symbol":"NIM0839381","token_address":"0xda148312c09ba73961d8a24d4e8f11c8f3bb663a","type":"artist","uuid":"16fce088-3e55-4a83-98ad-b1f4f14b9207"}
album: SED - Musik till vardag och blot
  type: MusicAlbum
  date published: 2013-01-01
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  type: MusicAlbum
  date published: 2014-01-01
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  type: MusicAlbum
  date published: 2020-02-29
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  type: MusicAlbum
  date published: 2021-02-01
album: Friaren
  type: MusicAlbum
  date published: 2021-03-20
album: SED II
  type: MusicAlbum
  date published: 2022-03-22
album: ALU
  type: MusicAlbum
  date published: 2023-04-08
album: SED, Vol. III - ALU
  type: MusicAlbum
  date published: 2023-12-22
album: Ellis Polska
  type: MusicAlbum
  date published: 2024-02-24