Slow J
type: MusicGroup
description: João Batista Coelho (born 21 September 1992), mostly known by his stage name Slow J, is a Portuguese rapper, record producer and singer-songwriter. Discography Albums Title Details Peak chart p
popularity: 2
followers: 281
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6b5f7a04f4c3fb1b22d8032d0554734af4d5dcb48cb216bdd6f59afab7668828
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954039
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954039
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3e607780-ee79-4253-9c6e-2e7a1f477aba.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3e607780-ee79-4253-9c6e-2e7a1f477aba.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3e607780-ee79-4253-9c6e-2e7a1f477aba
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T03:00:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6b5f7a04f4c3fb1b22d8032d0554734af4d5dcb48cb216bdd6f59afab7668828","name":"Slow J","registered_at":"2026-06-16T11:17:26Z","symbol":"NIM1035138","token_address":"0xb3ea641a12776ccb41c20afb5e3c72046b1e5f30","type":"artist","uuid":"3e607780-ee79-4253-9c6e-2e7a1f477aba"}
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 0x6b5f7a04f4c3fb1b22d8032d0554734af4d5dcb48cb216bdd6f59afab7668828. Chain 2 (Bitcoin): anchored in block 954039 (2026-06-17T03:00:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e607780-ee79-4253-9c6e-2e7a1f477aba.json and https://artists.proofprofile.net/proofs/artist/3e607780-ee79-4253-9c6e-2e7a1f477aba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T03:00:41Z
  text: {"copyright_id":"0x6b5f7a04f4c3fb1b22d8032d0554734af4d5dcb48cb216bdd6f59afab7668828","name":"Slow J","registered_at":"2026-06-16T11:17:26Z","symbol":"NIM1035138","token_address":"0xb3ea641a12776ccb41c20afb5e3c72046b1e5f30","type":"artist","uuid":"3e607780-ee79-4253-9c6e-2e7a1f477aba"}