Sjoerd Bos
type: MusicGroup
popularity: 2
followers: 63
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6d99d06b621d9e4d722122aa268b4e78dbc8eae759943d09f03dac1d8aef403b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954500
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954500
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9c754f38-e6bf-4f1e-81cf-577f02989361.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9c754f38-e6bf-4f1e-81cf-577f02989361.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9c754f38-e6bf-4f1e-81cf-577f02989361
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T04:47:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6d99d06b621d9e4d722122aa268b4e78dbc8eae759943d09f03dac1d8aef403b","name":"Sjoerd Bos","registered_at":"2026-06-20T04:06:51Z","symbol":"NIM1507135","token_address":"0xc09ef50812d34e3dadc808c47f273023dcbd4938","type":"artist","uuid":"9c754f38-e6bf-4f1e-81cf-577f02989361"}
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 0x6d99d06b621d9e4d722122aa268b4e78dbc8eae759943d09f03dac1d8aef403b. Chain 2 (Bitcoin): anchored in block 954502 (2026-06-20T05:07:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c754f38-e6bf-4f1e-81cf-577f02989361.json and https://artists.proofprofile.net/proofs/artist/9c754f38-e6bf-4f1e-81cf-577f02989361.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T05:07:36Z
  text: {"copyright_id":"0x6d99d06b621d9e4d722122aa268b4e78dbc8eae759943d09f03dac1d8aef403b","name":"Sjoerd Bos","registered_at":"2026-06-20T04:06:51Z","symbol":"NIM1507135","token_address":"0xc09ef50812d34e3dadc808c47f273023dcbd4938","type":"artist","uuid":"9c754f38-e6bf-4f1e-81cf-577f02989361"}
album: Ik Heb Het Gehad
  type: MusicAlbum
  date published: 2019-12-19
album: Right or Wrong
  type: MusicAlbum
  date published: 2021-02-19