gno.land - /r/g12cs4cehujpffpjpywmkqj43m6u5ya53nj69sjz/merkledrop/

Overview

Package merkledrop is an idiomatic gno.land port of the classic Solidity MerkleDistributor airdrop (Uniswap's contract, OpenZeppelin's MerkleProof).

A fixed merkleRoot commits to a set of (address, amount) allocations. A recipient proves membership by supplying the sibling hashes on the path from their leaf up to the root. Each address may claim exactly once.

Leaf and node hashing use crypto/sha256 (available in the gno stdlib), the same primitive Solidity distributors use via keccak — here sha256 keeps the off-chain tree builder trivially reproducible. Internal nodes hash the two children in sorted order (the OpenZeppelin "commutative" scheme), so proofs carry no left/right flags.

Example

1leaf   = sha256(addr.String() + "|" + amount)
2node   = sha256(min(a,b) || max(a,b))

Balances are pure accounting (uint64); no real coin moves — there is no msg.value on gno, so this models the allocation ledger only.

Function

Claim


              func Claim(cur realm, amount uint64, proof string)

Claim proves the caller is entitled to `amount` via `proof` (comma-separated hex sibling hashes) and marks the allocation claimed. Panics on a bad proof or a double claim. Mirrors MerkleDistributor.claim (msg.sender is the caller).

Command

# WARNING: This command is running in an INSECURE mode.
# It is strongly recommended to use a hardware device for signing
# and avoid trusting any computer connected to the internet,
# as your private keys could be exposed.

gnokey maketx call -pkgpath "gno.land/r/g12cs4cehujpffpjpywmkqj43m6u5ya53nj69sjz/merkledrop" -func "Claim" -args $'' -args $'' -gas-fee 1000000ugnot -gas-wanted 1_000_000_000 -send "" -chainid "topaz-1" -remote "https://rpc.topaz.testnets.gno.land" ADDRESSgnokey query -remote "https://rpc.topaz.testnets.gno.land" auth/accounts/ADDRESS
gnokey maketx call -pkgpath "gno.land/r/g12cs4cehujpffpjpywmkqj43m6u5ya53nj69sjz/merkledrop" -func "Claim" -args $'' -args $'' -gas-fee 1000000ugnot -gas-wanted 1_000_000_000 -send "" -broadcast=false ADDRESS > call.tx
gnokey sign -tx-path call.tx -chainid "topaz-1" -account-number ACCOUNTNUMBER -account-sequence SEQUENCENUMBER ADDRESS
gnokey broadcast -remote "https://rpc.topaz.testnets.gno.land" call.tx

/merkledrop package

Overview

Function

Claim

Params

Command