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name based-dao
description Bid on BASED DAO NFT auctions on Base. Check current auction status, place bids, and track auction history.

BASED DAO Auction Bidding

Bid on BASED DAO NFT auctions on Base network. Each 24-hour auction mints one governance NFT.

Quick Start

Check current auction:

node scripts/check-auction.js

Place a bid:

node scripts/place-bid.js <amount_in_eth>

Key Addresses

  • Token Contract: 0x10a5676ec8ae3d6b1f36a6f1a1526136ba7938bf
  • Auction House: 0x0D2790f4831bDFd6a8Fd21C6f591bB69496b5e91
  • Governor: 0x1b20dcfdf520176cfab22888f07ea3419d15779d
  • Network: Base (Chain ID: 8453)
  • RPC: https://mainnet.base.org

Auction Mechanics

  • Duration: 24 hours per auction
  • Reserve Price: ~0.0008 ETH (check with contract.reservePrice())
  • Min Bid Increment: Typically 10% above current bid
  • Settlement: Auto-settles when next auction starts
  • Extension: Last 15 minutes of bidding extends auction by 10 minutes

How to Bid

  1. Check current auction - Get auction ID, current bid, time remaining
  2. Calculate minimum bid - Current bid + (current bid × min increment %)
  3. Ensure you have ETH - Bid amount + gas (~0.001 ETH buffer)
  4. Call createBid(tokenId) - Send bid amount as value

Important: The auction house contract returns your previous bid if you're outbid or if you increase your bid. You only pay the difference.

Governance

Each BASED DAO NFT = 1 vote. NFT holders can vote on proposals that govern the treasury and protocol.

Check active proposals:

node scripts/check-proposals.js        # Active only
node scripts/check-proposals.js --all  # All proposals

Vote on a proposal:

export PRIVATE_KEY=0x...
node scripts/vote.js <proposal_id> <support>
# Support: 0 = Against, 1 = For, 2 = Abstain

Example:

node scripts/vote.js 5 1  # Vote FOR proposal #5

Governance Parameters

  • Voting Delay: 1 day after proposal creation
  • Voting Period: 4 days
  • Proposal Threshold: 4 NFTs required to create proposals
  • Quorum: Varies per proposal

Delegation

To vote, your NFTs must be delegated (usually to yourself). Check delegation status on the DAO website.

Scripts

check-auction.js

Returns current auction status:

  • Token ID
  • Current highest bid
  • Highest bidder address
  • Time remaining
  • Minimum next bid

Usage:

node scripts/check-auction.js

place-bid.js

Places a bid on the current auction. Requires:

  • Private key (via environment variable or hardcoded)
  • Bid amount in ETH (as argument)

Usage:

export PRIVATE_KEY=0x...
node scripts/place-bid.js 0.0009

check-proposals.js

Returns governance proposal status:

  • Proposal ID and state
  • Vote counts (for/against/abstain)
  • Time remaining for active proposals
  • Voting parameters

Usage:

node scripts/check-proposals.js        # Active proposals only
node scripts/check-proposals.js --all  # All proposals

vote.js

Casts a vote on an active proposal. Requires:

  • Private key (via environment variable)
  • Proposal ID
  • Support (0=Against, 1=For, 2=Abstain)
  • Optional reason

Usage:

export PRIVATE_KEY=0x...
node scripts/vote.js 5 1                    # Vote FOR
node scripts/vote.js 5 0                    # Vote AGAINST
node scripts/vote.js 5 2 "No strong opinion"  # ABSTAIN with reason

Auction Timeline

  1. Active - Accept bids, extend if bid in last 15 min
  2. Ended - No more bids, awaiting settlement
  3. Settled - Winner receives NFT, next auction starts

View Auctions

Web UI: https://nouns.build/dao/base/0x10a5676ec8ae3d6b1f36a6f1a1526136ba7938bf/{auctionId}

BaseScan: https://basescan.org/address/0x0D2790f4831bDFd6a8Fd21C6f591bB69496b5e91

Common Tasks

Check if auction ended:

const now = Math.floor(Date.now() / 1000);
const ended = now > auctionData.endTime;

Get auction by ID:

// Current auction
const current = await auctionContract.auction();

// Specific auction (historical)
// Note: Auction house only stores current auction
// Use events or indexer for historical data

Estimate gas for bid:

const gasEstimate = await contract.createBid.estimateGas(
  tokenId, 
  { value: bidAmount }
);
// Typical: 60k-80k gas

Error Handling

Transaction reverts:

  • Auction expired - Auction ended, can't bid
  • Must send more than last bid - Bid too low
  • Auction hasn't begun - Auction not started yet

Common issues:

  • Insufficient ETH balance
  • Gas estimation failure (auction ended mid-estimation)
  • Bid below reserve price (first bid only)
  • Bid doesn't meet minimum increment

References

  • Auction ABI: references/auction-abi.json
  • Token ABI: references/token-abi.json
  • Contract addresses: references/contracts.json

Notes

  • BASED DAO is a Nouns-style DAO on Base
  • Each NFT = 1 governance vote
  • Treasury accumulates from auction proceeds
  • Continuous daily auctions (no gaps)