Sirstein
type: MusicGroup
genre: jazz beats
genre: lo-fi
genre: lo-fi beats
popularity: 6
followers: 100
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x979cade48862c56474da7d1642395a170ecb99f9c104d61408e1fee012316ee7
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/49b224ff-dae2-45a2-8e8b-6724d2c284d6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/49b224ff-dae2-45a2-8e8b-6724d2c284d6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/49b224ff-dae2-45a2-8e8b-6724d2c284d6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
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 0x979cade48862c56474da7d1642395a170ecb99f9c104d61408e1fee012316ee7. 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/49b224ff-dae2-45a2-8e8b-6724d2c284d6.json and https://artists.proofprofile.net/proofs/artist/49b224ff-dae2-45a2-8e8b-6724d2c284d6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
album: Those Little Moments
  type: MusicAlbum
  date published: 2022-05-23
album: Runaway From Home
  type: MusicAlbum
  date published: 2022-06-02
album: TIES.
  type: MusicAlbum
  date published: 2022-06-17
album: Last Call
  type: MusicAlbum
  date published: 2022-07-15
album: Handwriting
  type: MusicAlbum
  date published: 2022-07-22
album: Lullaby for Dreamers
  type: MusicAlbum
  date published: 2022-07-29
album: Lullaby for Dreamers
  type: MusicAlbum
  date published: 2022-07-29