Plasma Fraud Proof Challenge

At Parsec Labs we love fraud proofs, they power the security of our Plasma chain and keep the validators in check. We have set up a chain on the Rinkeby testnet, but some malicious validators have submitted invalid blocks or withheld block data! Help us to invalidate the blocks and slash the miners' stacks. Participate with the following steps:

1. Review blocks.
2. Submit 3 different fraud proofs.
3. Mine next block.

Each successful transaction will receive one of the crypto-kitties shown in the Plasma presentation.

Setup:

1. Install Fraud Proof Library:

npm install parsec-lib

also check out the repository.

2. Get Rinkeby Ether:

rinkeby faucet

*3. Bind to contract:

Parsec Bridge Address:

0xc119429d57b4b5b46d17cc4277b35e222989d5a4

Parsec Bridge Interface:

pragma solidity ^0.4.19;

contract ParsecBridge {
    
  struct Block {
    bytes32 parent; // the id of the parent node
    uint64 height;  // the hight this block is stored at
    uint32 parentIndex; //  the position of this node in the Parent's children list
    address operator; // the operator that submitted the block
    bytes32[] children; // unordered list of children below this node
    // more node attributes here
  }
  mapping(bytes32 => Block) public chain;

  struct Deposit {
    uint64 height; 
    address owner;
    uint256 amount;
  }
  mapping(uint32 => Deposit) public deposits;
  uint32 depositCount = 0;

  uint32 public operatorCount;
  uint64 public blockReward;
  uint256 public totalStake;  
  bytes32 public tipHash;

  function join(uint256 amount) public;
  
  function submitBlockAndPrune(bytes32 prevHash, bytes32 root, uint8 v, bytes32 r, bytes32 s, bytes32[] orphans) public;

  function reportLightBranch(bytes32[] _data) public;

  function reportInvalidDeposit(bytes32[] _txData) public;

  function reportDoubleSpend(bytes32[] _proof, bytes32[] _prevProof) public;
  
  function getBranchCount(bytes32 nodeId) public constant returns(uint childCount);

  function getBranchAtIndex(bytes32 nodeId, uint index) public constant returns(bytes32 childId);

  function getTip(address[] _operators) public constant returns (bytes32, uint256);
}

Proof Data

Genesis Block:

blockHash: 0x4920616d207665727920616e6772792c20627574206974207761732066756e21
height: 0
txList: -

Block 0xcd:

blockHash: 0xcd4389364d24815a27b3427da939a886585126fa99c4fc4297e33229280ad1e6
height: 1
txList: const tx1 = Tx.fromRaw('0x0211000000010000000005e69ec00000f3beac30c498d9e26865f34fcaa57dbb935b0d74');, const tx2 = Tx.fromRaw('0x0311846e4f732fd1c80e0a6d608cb0c732cfbe5cbf0efe1397c3d9a44f24170fd2f500d5275e033eb32583b0bdb0e0ef8c8164c43066868ad01eafc4491a980c4d84506d308f7995d30a855d9e5bafc73ed6ca4a6bebcf54569d161a774e64354c0ac11b0000000005e69ec00000e10f3d125e5f4c753a6456fc37123cf17c6900f2')

Block 0x7e:

blockHash: 0x7ea11ec101e7e5ed3786a4c1bec1b04f667f3c70f342094a44ec3a2cd7037274
height: 2
txList: const tx3 = Tx.fromRaw('0x0311846e4f732fd1c80e0a6d608cb0c732cfbe5cbf0efe1397c3d9a44f24170fd2f500d5275e033eb32583b0bdb0e0ef8c8164c43066868ad01eafc4491a980c4d84506d308f7995d30a855d9e5bafc73ed6ca4a6bebcf54569d161a774e64354c0ac11b0000000005e69ec00000e10f3d125e5f4c753a6456fc37123cf17c6900f2')

Block 0xa3:

blockHash: 0xa380889bc821e85122f8d96ffb7d980bb86a0336f4d93888005b38a8b9fcc65a
height: 2
txList: const tx4 = Tx.fromRaw('0x0311efcb630956a7b3c52eb6cda0ee11be33936562bf60214cd67794dc812353a0a200505d7bb19f0ac44a6e4c3715755c74a467ae385750b950c7d870bc77a4aa24bd2d41ea9b733b5290d08eae142233f3e546c5010abe50b843074a961547567f101c0000000005e69ec00000e10f3d125e5f4c753a6456fc37123cf17c6900f2')

Block 0xce:

blockHash: 0xce935f92e6289b0bc532303f146c8de98e16a6986a054ce8c7f33ae19bb45edf
height: 3
CAS by slot 1 v: 27
CAS by slot 1 r: 0x683d0aa2f36723c6990a3199485e61a6be612f8283d450d7ca905675e55d25ea
CAS by slot 1 s: 0x24cf29ec1f0cc39211b8a8eb9bb73d0adfb35d40ac38f6874c26d804ddac6e6e
txList: const tx5= Tx.fromRaw('0x0211000000020000000005e69ec00000e10f3d125e5f4c753a6456fc37123cf17c6900f2')

Block 0xd0:

blockHash: 0xd02867920f8c3928666d3aaa7f39515fb4e5ec945e83908920208b9f565a3121
height: 3
CAS by slot 1 v: 27
CAS by slot 1 r: 0x63fa9769b60e4e7c723f9c2e5c1134c7ba88662d6170276699bbb29875d31836
CAS by slot 1 s: 0x47390f65031f15a9738cd111daa138d0ac7bf0518fafdff2a563ae6eda533b5d
txList: const tx6= Tx.fromRaw('0x0311f1afcb6eb68a85e2cedad832798a9d402557c85199a5cd8861948a1a279ebc0200e52762194a99e0afa59337fd512979b0e575b5025929a1149b38cd50f096883d25b874d0f7d69321085ea17f789fdb245583f217f84ca14eef5a2b4b8f0e145c1b0000000005e69ec00000e10f3d125e5f4c753a6456fc37123cf17c6900f2')