City Samer
type: MusicGroup
genre: industrial metal
genre: nu metal
genre: progressive metal
genre: rap metal
popularity: 2
followers: 17
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa005e71c63ca6a436fbe373cf83baecc84f4d3e192d338c6de32b82714011d1c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a88c1586-35f7-4416-8b08-26dc50c568b1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a88c1586-35f7-4416-8b08-26dc50c568b1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a88c1586-35f7-4416-8b08-26dc50c568b1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa005e71c63ca6a436fbe373cf83baecc84f4d3e192d338c6de32b82714011d1c","name":"City Samer","registered_at":"2026-06-20T08:38:39Z","symbol":"NIM1568827","token_address":"0xa3bd883fd5dbfc7089f4aab237de78e39b643102","type":"artist","uuid":"a88c1586-35f7-4416-8b08-26dc50c568b1"}
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 0xa005e71c63ca6a436fbe373cf83baecc84f4d3e192d338c6de32b82714011d1c. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a88c1586-35f7-4416-8b08-26dc50c568b1.json and https://artists.proofprofile.net/proofs/artist/a88c1586-35f7-4416-8b08-26dc50c568b1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:10:20Z
  text: {"copyright_id":"0xa005e71c63ca6a436fbe373cf83baecc84f4d3e192d338c6de32b82714011d1c","name":"City Samer","registered_at":"2026-06-20T08:38:39Z","symbol":"NIM1568827","token_address":"0xa3bd883fd5dbfc7089f4aab237de78e39b643102","type":"artist","uuid":"a88c1586-35f7-4416-8b08-26dc50c568b1"}
album: En Otro Lugar
  type: MusicAlbum
  date published: 2020-07-05
album: Fly Mind
  type: MusicAlbum
  date published: 2024-12-22
album: My Game
  type: MusicAlbum
  date published: 2025-02-28