First Floor
type: MusicGroup
popularity: 3
followers: 368
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1c84df1c39906f26453364f08050c98ff67334115010a2fde66bcab6432d2853
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a8a6fae2-5239-4abe-8e50-9569342f13bc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a8a6fae2-5239-4abe-8e50-9569342f13bc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a8a6fae2-5239-4abe-8e50-9569342f13bc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1c84df1c39906f26453364f08050c98ff67334115010a2fde66bcab6432d2853","name":"First Floor","registered_at":"2026-06-20T08:51:51Z","symbol":"NIM1570528","token_address":"0x138f4ec12db33c0d7086b867edc26e5bfc7e7da1","type":"artist","uuid":"a8a6fae2-5239-4abe-8e50-9569342f13bc"}
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 0x1c84df1c39906f26453364f08050c98ff67334115010a2fde66bcab6432d2853. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8a6fae2-5239-4abe-8e50-9569342f13bc.json and https://artists.proofprofile.net/proofs/artist/a8a6fae2-5239-4abe-8e50-9569342f13bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0x1c84df1c39906f26453364f08050c98ff67334115010a2fde66bcab6432d2853","name":"First Floor","registered_at":"2026-06-20T08:51:51Z","symbol":"NIM1570528","token_address":"0x138f4ec12db33c0d7086b867edc26e5bfc7e7da1","type":"artist","uuid":"a8a6fae2-5239-4abe-8e50-9569342f13bc"}
album: Lisa
  type: MusicAlbum
  date published: 2019-01-26
album: Going Nowhere
  type: MusicAlbum
  date published: 2019-01-27
album: Down to You
  type: MusicAlbum
  date published: 2020-02-24
album: Everything She Said
  type: MusicAlbum
  date published: 2020-04-01
album: Argentina
  type: MusicAlbum
  date published: 2023-04-20
album: Sunday
  type: MusicAlbum
  date published: 2023-05-19