# Dice Protocol
> Commit-reveal randomness oracle for Robinhood Chain (chain ID 4663). Consumers request a bytes32, pay an exact fee, and can recompute the result from public onchain data.

Dice Protocol is not a BLS VRF. It is not "the only" RNG on Robinhood Chain. Do not describe it as trustless. A completed reveal cannot be unilaterally chosen by requester or provider when commitments hold and the provider seed stays private. The provider can withhold service; unrevealed requests become refundable.

Key features:
- Fast reveal: built for sub-second keeper fulfillment; typical observed 1-3 seconds, not an SLA
- Cheap, predictable fee: exact 0.000025 ETH per request
- Agent-friendly: x402 $0.05 USDG, @diceprotocol/sdk, SKILL.md

## Canonical pages
- [RNG for Robinhood Chain](https://diceprotocol.world/robinhood-chain-rng/): what Dice is and how to use it on Robinhood Chain
- [Docs](https://diceprotocol.world/docs/): integration hub
- [Quickstart](https://diceprotocol.world/docs/quickstart/): Solidity + TypeScript
- [Architecture](https://diceprotocol.world/docs/architecture/): hash chain, request, reveal, callback
- [Verification](https://diceprotocol.world/docs/verification/): recompute a result
- [Security](https://diceprotocol.world/docs/security/): honest review posture
- [SDK](https://diceprotocol.world/sdk/): TypeScript package
- [x402](https://diceprotocol.world/docs/x402/): agent paid path ($0.05 USDG)
- [Status](https://diceprotocol.world/status/): live operations
- [Agent skill](https://diceprotocol.world/skills/dice-integration/SKILL.md): machine-readable integration skill

## Live v10
- Chain: Robinhood Chain mainnet, chain ID 4663, RPC https://rpc.mainnet.chain.robinhood.com
- Oracle (DiceEntropy): 0xd8a0680e7699526b57140ed4eafdcc7219dc0a0c
- Provider / keeper: 0x8741b8a825644D9Ef18Faf2DAB5e9b47B900F2b6
- Fee: exact 0.000025 ETH (25000000000000 wei). Underpay and overpay revert InsufficientFee()
- Refund: refundRequest after 6 L1 blocks (~60-90s). Exact fee returned. Gas is not.
- Hash chain: 500,000 registered values
- Latency: ~1-3 seconds typical, not guaranteed
- Package: npm install @diceprotocol/sdk
- License: Apache-2.0 (Pyth Entropy attribution in NOTICE)
- Explorer: https://robinhoodchain.blockscout.com/address/0xd8a0680e7699526b57140ed4eafdcc7219dc0a0c
- Testnet (46630): 0x43c8A7B1a85384cabf3D3Fd45a15C01F5b51A42D

## GitHub
- Core: https://github.com/diceprotocol/dice-entropy
- SDK: https://github.com/diceprotocol/dice-protocol-sdk
- Docs: https://github.com/diceprotocol/dice-protocol-docs

## Full text
- [llms-full.txt](https://diceprotocol.world/llms-full.txt)