A Metros
type: MusicGroup
popularity: 6
followers: 39
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdcfec46e6d57c84a34e70a97ab239860a2422ddfb08c3d605908e2ae2371b434
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/efc8270a-4b7d-4d38-a2ba-9ef018a8049e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/efc8270a-4b7d-4d38-a2ba-9ef018a8049e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/efc8270a-4b7d-4d38-a2ba-9ef018a8049e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdcfec46e6d57c84a34e70a97ab239860a2422ddfb08c3d605908e2ae2371b434","name":"A Metros","registered_at":"2026-06-21T13:01:44Z","symbol":"NIM1930189","token_address":"0xa51ad93e718242474ab170726e8420abf9f0f047","type":"artist","uuid":"efc8270a-4b7d-4d38-a2ba-9ef018a8049e"}
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 0xdcfec46e6d57c84a34e70a97ab239860a2422ddfb08c3d605908e2ae2371b434. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/efc8270a-4b7d-4d38-a2ba-9ef018a8049e.json and https://artists.proofprofile.net/proofs/artist/efc8270a-4b7d-4d38-a2ba-9ef018a8049e.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0xdcfec46e6d57c84a34e70a97ab239860a2422ddfb08c3d605908e2ae2371b434","name":"A Metros","registered_at":"2026-06-21T13:01:44Z","symbol":"NIM1930189","token_address":"0xa51ad93e718242474ab170726e8420abf9f0f047","type":"artist","uuid":"efc8270a-4b7d-4d38-a2ba-9ef018a8049e"}