Real VRF race on Solana devnet

How this is measured

• MagicBlock VRF calls MagicBlock’s public roll-dice program; the oracle answers with a callback that writes the die value into your player account.
• Other VRF uses that provider’s request instruction directly; its oracles fulfil the request account, and the 64 random bytes are turned into a die value in the browser.
• The clock starts when the signed request is handed to the RPC (devnet.helius-rpc.com) and stops when the fulfilled account arrives over the websocket at “confirmed” commitment. Building the transaction happens before the clock starts. Neither side uses priority fees.
• Costs are read back from each request transaction: network fee, rent for newly created accounts, and the rest is the VRF fee.
• Devnet only. The burner wallet is stored in this browser; never send real SOL to it.