Leo Mass
type: MusicGroup
genre: big room
popularity: 7
followers: 121
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5648a1674ceecb3d2ebfa2b0abc291125f1ffd0d1f6f1031b70e38801407257a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954587
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954587
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/baf91983-a6b0-471b-a8b7-33bf7f545def.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/baf91983-a6b0-471b-a8b7-33bf7f545def.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/baf91983-a6b0-471b-a8b7-33bf7f545def
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5648a1674ceecb3d2ebfa2b0abc291125f1ffd0d1f6f1031b70e38801407257a","name":"Leo Mass","registered_at":"2026-06-20T16:56:30Z","symbol":"NIM1660607","token_address":"0xe1703e14ba44b7cc98ef37466523757329a71cd4","type":"artist","uuid":"baf91983-a6b0-471b-a8b7-33bf7f545def"}
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 0x5648a1674ceecb3d2ebfa2b0abc291125f1ffd0d1f6f1031b70e38801407257a. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/baf91983-a6b0-471b-a8b7-33bf7f545def.json and https://artists.proofprofile.net/proofs/artist/baf91983-a6b0-471b-a8b7-33bf7f545def.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:10:41Z
  text: {"copyright_id":"0x5648a1674ceecb3d2ebfa2b0abc291125f1ffd0d1f6f1031b70e38801407257a","name":"Leo Mass","registered_at":"2026-06-20T16:56:30Z","symbol":"NIM1660607","token_address":"0xe1703e14ba44b7cc98ef37466523757329a71cd4","type":"artist","uuid":"baf91983-a6b0-471b-a8b7-33bf7f545def"}
album: Hearchen
  type: MusicAlbum
  date published: 2021-12-22
album: Grave
  type: MusicAlbum
  date published: 2022-08-07
album: Revelation
  type: MusicAlbum
  date published: 2024-10-25
album: Ascension
  type: MusicAlbum
  date published: 2025-04-11
album: Believe
  type: MusicAlbum
  date published: 2025-04-14
album: Amos
  type: MusicAlbum
  date published: 2025-06-26