Markus Sommer
type: MusicGroup
genre: roots rock
genre: traditional country
popularity: 2
followers: 240
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x255dfe7ff6143f791b2639af20d47325dab219b4b443d18c8178dc4d4d42107c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f9d28be9-7956-4a76-baeb-65d320bb4175.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f9d28be9-7956-4a76-baeb-65d320bb4175.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f9d28be9-7956-4a76-baeb-65d320bb4175
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x255dfe7ff6143f791b2639af20d47325dab219b4b443d18c8178dc4d4d42107c","name":"Markus Sommer","registered_at":"2026-06-21T16:31:31Z","symbol":"NIM1974100","token_address":"0x288da4dd6935953e15fa0dc51fa158c50e888342","type":"artist","uuid":"f9d28be9-7956-4a76-baeb-65d320bb4175"}
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 0x255dfe7ff6143f791b2639af20d47325dab219b4b443d18c8178dc4d4d42107c. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9d28be9-7956-4a76-baeb-65d320bb4175.json and https://artists.proofprofile.net/proofs/artist/f9d28be9-7956-4a76-baeb-65d320bb4175.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
  text: {"copyright_id":"0x255dfe7ff6143f791b2639af20d47325dab219b4b443d18c8178dc4d4d42107c","name":"Markus Sommer","registered_at":"2026-06-21T16:31:31Z","symbol":"NIM1974100","token_address":"0x288da4dd6935953e15fa0dc51fa158c50e888342","type":"artist","uuid":"f9d28be9-7956-4a76-baeb-65d320bb4175"}
album: True Sounds of the West
  type: MusicAlbum
  date published: 2019-02-13
album: The Ranch Sessions
  type: MusicAlbum
  date published: 2020-06-26