Alex Grefer
type: MusicGroup
popularity: 3
followers: 47
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa4106216c3b04f3845253592aad56fecc8dad0b3d7a208dadc8310e4ddb243b4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953903
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953903
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/156ac84c-4bbd-4938-8a1e-aa8708a1e0b7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/156ac84c-4bbd-4938-8a1e-aa8708a1e0b7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/156ac84c-4bbd-4938-8a1e-aa8708a1e0b7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:05:05Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa4106216c3b04f3845253592aad56fecc8dad0b3d7a208dadc8310e4ddb243b4","name":"Alex Grefer","registered_at":"2026-06-15T20:54:39Z","symbol":"NIM0829144","token_address":"0xc72eeee3c3ff875c537d280b34e623225de26115","type":"artist","uuid":"156ac84c-4bbd-4938-8a1e-aa8708a1e0b7"}
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 0xa4106216c3b04f3845253592aad56fecc8dad0b3d7a208dadc8310e4ddb243b4. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/156ac84c-4bbd-4938-8a1e-aa8708a1e0b7.json and https://artists.proofprofile.net/proofs/artist/156ac84c-4bbd-4938-8a1e-aa8708a1e0b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0xa4106216c3b04f3845253592aad56fecc8dad0b3d7a208dadc8310e4ddb243b4","name":"Alex Grefer","registered_at":"2026-06-15T20:54:39Z","symbol":"NIM0829144","token_address":"0xc72eeee3c3ff875c537d280b34e623225de26115","type":"artist","uuid":"156ac84c-4bbd-4938-8a1e-aa8708a1e0b7"}
album: Early Morning Wake Up Call
  type: MusicAlbum
  date published: 2015-06-01
album: Christmas, Gospel & Love Songs
  type: MusicAlbum
  date published: 2015-11-26
album: Auch nur ein Mann
  type: MusicAlbum
  date published: 2016-09-25
album: Early Morning Wake up Call
  type: MusicAlbum
  date published: 2018-04-17
album: Early Morning Wake Up Call (Extended Cover Version)
  type: MusicAlbum
  date published: 2018-04-18
album: Sie liebt den DJ (Rockabilly Cover)
  type: MusicAlbum
  date published: 2018-04-30