@mstable/merkle-drop

A lightweight Merkle Drop contract.

This project uses Hardhat.

Basic workflow

• Use the deployMerkleDrop task to deploy a MerkleDrop
• Create a JSON balances file for each tranche
• Use the seedNewAllocations task to add a new tranche with JSON balances

Pro workflow

• Use MerkleDropTranches to track MerkleDrop contracts on the subgraph (task: registerMerkleDrop)
• On frontends etc, use the subgraph and tranche URI to generate proofs for claims

Hardhat Tasks

Deploying MerkleDrop

yarn hardhat deployMerkleDrop --token 0x... --funders 0x...,0x...

Seeding new allocations (adding a tranche)

# From a local file:
yarn hardhat seedNewAllocations --merkle-drop 0x... --balances ./tranche0.json

# Or, fetch balances from a remote resource:
yarn hardhat seedNewAllocations --merkle-drop 0x... --balances https://raw.githubusercontent.com/mstable/stkBPT-merkle-drops/master/tranches/1/tranche-1.json

Deploying MerkleDropTranches

yarn hardhat deployMerkleDropTranches

Registering a MerkleDrop on MerkleDropTranches (useful for subgraphs)

yarn hardhat registerMerkleDrop --merkle-drop-tranches 0x... --merkle-drop 0x...

Adding a new tranche URI (useful for subgraphs)

yarn hardhat addTrancheURI --merkle-drop-tranches 0x... --merkle-drop 0x... --id 0  --balances ./tranche0.json

Installation in your project

yarn add @mstable/merkle-drop

Development

Local development

yarn
yarn compile
yarn typechain

Testing

yarn test

Coverage

yarn coverage

Linting

yarn lint

Subgraph

This project includes a subgraph: ./subgraph

See the Kovan Deployment here

Example usage

query {
  merkleDrops {
    id
    tranches {
      trancheId
      uri
      merkleRoot
      claims(where: { account_ends_with: "0x9167be9ece1a7f20c22ceadbe4fafafcd88d655d" }) {
        amount
        claimed
        account {
          lastClaimedTranche {
            trancheId
          }
        }
      }
    }
  }
}

{
  "data": {
    "merkleDrops": [
      {
        "id": "0x4278efcaef614b462d9193c7aa06e67a685bb586",
        "tranches": [
          {
            "claims": [
              {
                "account": {
                  "lastClaimedTranche": null
                },
                "amount": "20.22",
                "claimed": false
              }
            ],
            "merkleRoot": "0x893c9672ae7f772acf9e4f3f0eb86f071ced0ab52b2fc445d7147c2309d74024",
            "trancheId": 0,
            "uri": "ipfs://QmXAJS3xJLgnttfPzbD6G38bxMgEJ5me4MzFjXy1BiSDU2"
          }
        ]
      }
    ]
  }
}