Fred Ingemarson
type: MusicGroup
genre: swedish ballads
popularity: 6
followers: 63
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe8f79b96a3a29c70cdfd667399a21cd2873c35ae44d9f7810506c5fe43290fd5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cea30dc7-309b-4612-84e9-185482e5c674.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cea30dc7-309b-4612-84e9-185482e5c674.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cea30dc7-309b-4612-84e9-185482e5c674
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe8f79b96a3a29c70cdfd667399a21cd2873c35ae44d9f7810506c5fe43290fd5","name":"Fred Ingemarson","registered_at":"2026-06-21T00:06:21Z","symbol":"NIM1757330","token_address":"0x04e9e7a1e98e8e2839f527c3b6b89a7d5dbe0faa","type":"artist","uuid":"cea30dc7-309b-4612-84e9-185482e5c674"}
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 0xe8f79b96a3a29c70cdfd667399a21cd2873c35ae44d9f7810506c5fe43290fd5. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cea30dc7-309b-4612-84e9-185482e5c674.json and https://artists.proofprofile.net/proofs/artist/cea30dc7-309b-4612-84e9-185482e5c674.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0xe8f79b96a3a29c70cdfd667399a21cd2873c35ae44d9f7810506c5fe43290fd5","name":"Fred Ingemarson","registered_at":"2026-06-21T00:06:21Z","symbol":"NIM1757330","token_address":"0x04e9e7a1e98e8e2839f527c3b6b89a7d5dbe0faa","type":"artist","uuid":"cea30dc7-309b-4612-84e9-185482e5c674"}
album: Du kan bli allt
  type: MusicAlbum
  date published: 2021-02-18