BC-5 — Gasless Bidding on Signal Auctions: no more gas for stablecoin bids
· 2 min read
BC-5 makes bidding on signal auctions with stablecoins (USDC, USDT, WETH, DAI) gas-free: the bidder just signs a message in their wallet — no POL, no gas, no second transaction needed to place a bid.
What's new
- Gasless bidding for all stablecoin/token bids (USDC, USDT, WETH, DAI) on signal auctions — the bidder signs an EIP-712 message, the platform submits the bid and covers the gas
- Full on-chain transparency preserved — the bid is still correctly attributed to the real bidder's wallet, not the platform's relayer address
- Native POL bidding is unchanged (still a direct wallet flow)
- New smart contract (PragmaSignalAuctionV4) with ERC-2771 meta-transaction support, plus a dedicated forwarder contract
- API:
GET /api/blockchain/relay/nonce/{address},POST /api/blockchain/relay/bid-with-token
Why this matters
For companies without crypto experience, having to hold POL for gas fees was a real barrier to participating in a signal auction at all — even if they already held USDC or another stablecoin. Gasless bidding removes exactly that barrier: anyone holding a supported token can bid immediately, without also having to buy and manage POL. That makes the Signal Exchange usable for a much broader, non-crypto-native audience — without giving up the trust guarantees of a real on-chain auction.