Mad Mark
type: MusicGroup
popularity: 2
followers: 325
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc380628fd2843a03a8bdb9b58df8956810ec83251b4673f278383448dc669f49
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/50045270-1713-44dd-a593-4711798a3927.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/50045270-1713-44dd-a593-4711798a3927.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/50045270-1713-44dd-a593-4711798a3927
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc380628fd2843a03a8bdb9b58df8956810ec83251b4673f278383448dc669f49","name":"Mad Mark","registered_at":"2026-06-16T17:35:35Z","symbol":"NIM1125347","token_address":"0xfbb2876b4c078b3f9c57f513b0c48271ea4b75aa","type":"artist","uuid":"50045270-1713-44dd-a593-4711798a3927"}
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 0xc380628fd2843a03a8bdb9b58df8956810ec83251b4673f278383448dc669f49. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50045270-1713-44dd-a593-4711798a3927.json and https://artists.proofprofile.net/proofs/artist/50045270-1713-44dd-a593-4711798a3927.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xc380628fd2843a03a8bdb9b58df8956810ec83251b4673f278383448dc669f49","name":"Mad Mark","registered_at":"2026-06-16T17:35:35Z","symbol":"NIM1125347","token_address":"0xfbb2876b4c078b3f9c57f513b0c48271ea4b75aa","type":"artist","uuid":"50045270-1713-44dd-a593-4711798a3927"}
album: Anywhere You Go
  type: MusicAlbum
  date published: 2012-03-27
album: Lose You
  type: MusicAlbum
  date published: 2020-12-11
album: Your Voice
  type: MusicAlbum
  date published: 2023-04-21
album: Your Voice
  type: MusicAlbum
  date published: 2023-11-07