Calvin Sparks
type: MusicGroup
popularity: 39
followers: 7141
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3cda1d114fd9a01865285c9406fd3a02034cb0ee8ea183ae29aa87ddcb6f021d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e30041fc-90b9-462b-92f4-93967df4dec5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e30041fc-90b9-462b-92f4-93967df4dec5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e30041fc-90b9-462b-92f4-93967df4dec5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3cda1d114fd9a01865285c9406fd3a02034cb0ee8ea183ae29aa87ddcb6f021d","name":"Calvin Sparks","registered_at":"2026-06-12T12:01:06Z","symbol":"NIM0291582","token_address":"0x4bf8a2ab59fe09d32e80f1ade23e3676be7a8653","type":"artist","uuid":"e30041fc-90b9-462b-92f4-93967df4dec5"}
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 0x3cda1d114fd9a01865285c9406fd3a02034cb0ee8ea183ae29aa87ddcb6f021d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e30041fc-90b9-462b-92f4-93967df4dec5.json and https://artists.proofprofile.net/proofs/artist/e30041fc-90b9-462b-92f4-93967df4dec5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
  text: {"copyright_id":"0x3cda1d114fd9a01865285c9406fd3a02034cb0ee8ea183ae29aa87ddcb6f021d","name":"Calvin Sparks","registered_at":"2026-06-12T12:01:06Z","symbol":"NIM0291582","token_address":"0x4bf8a2ab59fe09d32e80f1ade23e3676be7a8653","type":"artist","uuid":"e30041fc-90b9-462b-92f4-93967df4dec5"}
album: Dancin
  type: MusicAlbum
  date published: 2019
album: Summer Days
  type: MusicAlbum
  date published: 2019
album: We Are Never Ever Going Home
  type: MusicAlbum
  date published: 2019-11-27
album: Toosie Slide (Workout Mix)
  type: MusicAlbum
  date published: 2020-05-08
album: OK Not To Be OK
  type: MusicAlbum
  date published: 2020-10-07