Mary C
type: MusicGroup
popularity: 3
followers: 36
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1cd496a42f49e54a385ad2096e4e22b561448eb78afdb197efe6ec27f6d43e9a
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/f7ebca74-1182-4c08-8221-6557005806fe.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f7ebca74-1182-4c08-8221-6557005806fe.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f7ebca74-1182-4c08-8221-6557005806fe
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1cd496a42f49e54a385ad2096e4e22b561448eb78afdb197efe6ec27f6d43e9a","name":"Mary C","registered_at":"2026-06-21T16:07:11Z","symbol":"NIM1964903","token_address":"0x01d8369309bbe3511e2223379dab800819530b19","type":"artist","uuid":"f7ebca74-1182-4c08-8221-6557005806fe"}
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 0x1cd496a42f49e54a385ad2096e4e22b561448eb78afdb197efe6ec27f6d43e9a. 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/f7ebca74-1182-4c08-8221-6557005806fe.json and https://artists.proofprofile.net/proofs/artist/f7ebca74-1182-4c08-8221-6557005806fe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
  text: {"copyright_id":"0x1cd496a42f49e54a385ad2096e4e22b561448eb78afdb197efe6ec27f6d43e9a","name":"Mary C","registered_at":"2026-06-21T16:07:11Z","symbol":"NIM1964903","token_address":"0x01d8369309bbe3511e2223379dab800819530b19","type":"artist","uuid":"f7ebca74-1182-4c08-8221-6557005806fe"}
album: Love Me More
  type: MusicAlbum
  date published: 2009-09-23
album: Off the Line
  type: MusicAlbum
  date published: 2010-10-19