Concertinas do Dão
type: MusicGroup
popularity: 2
followers: 229
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcb250706992881474343272c3db6af4d28ace44f6e20581f294f8843e429494f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954025
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954025
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/38149101-b0d8-48b1-b379-8f6638699d6b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/38149101-b0d8-48b1-b379-8f6638699d6b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/38149101-b0d8-48b1-b379-8f6638699d6b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T00:32:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcb250706992881474343272c3db6af4d28ace44f6e20581f294f8843e429494f","name":"Concertinas do Dão","registered_at":"2026-06-16T09:09:38Z","symbol":"NIM1004635","token_address":"0x8d03907110cf7791d3ab9bfc0e683f231ddcb132","type":"artist","uuid":"38149101-b0d8-48b1-b379-8f6638699d6b"}
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 0xcb250706992881474343272c3db6af4d28ace44f6e20581f294f8843e429494f. Chain 2 (Bitcoin): anchored in block 954025 (2026-06-17T00:32:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38149101-b0d8-48b1-b379-8f6638699d6b.json and https://artists.proofprofile.net/proofs/artist/38149101-b0d8-48b1-b379-8f6638699d6b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T00:32:47Z
  text: {"copyright_id":"0xcb250706992881474343272c3db6af4d28ace44f6e20581f294f8843e429494f","name":"Concertinas do Dão","registered_at":"2026-06-16T09:09:38Z","symbol":"NIM1004635","token_address":"0x8d03907110cf7791d3ab9bfc0e683f231ddcb132","type":"artist","uuid":"38149101-b0d8-48b1-b379-8f6638699d6b"}
album: Sezures - Penalva do Castelo
  type: MusicAlbum
  date published: 2014
album: Sezures
  type: MusicAlbum
  date published: 2019-11-14