BitcoinL1 is the Bitcoin Layer-1 testnet mirroring mainnet consensus (Proof-of-Work, UTXO, SegWit/Taproot) using BTC testnet coins with no real-world value. Its primary use cases are safe integration testing for wallets, exchanges, and cross-chain bridges; developing and validating PSBT workflows, HTLC/time-lock scripts, and Taproot policies; and simulating SPV-based verification without mainnet risk.
BitcoinL1 is unique as the canonical PoW UTXO baseline with native script primitives (HTLCs, timelocks, Taproot/Schnorr) enabling atomic swaps and SPV-based bridging rather than EVM-style contracts. Performance for comparison: ~10-minute block interval, practical throughput ~3–7 TPS, and on testnet fees are typically near 0–1 sat/vB (no “gas”); activity is faucet-driven and primarily developer/testing traffic. Unlike fast-finality chains, high-assurance settlement targets ~6 confirmations (~60 minutes) while benefiting from broad Bitcoin tooling and ecosystem compatibility.
BitcoinL1 uses BTC as the gas token for transaction fees. You can obtain BTC by bridging from other chains or purchasing using thirdweb Bridge, or through faucets (for testnet).
To bridge BTC to BitcoinL1, connect your wallet to thirdweb bridge, select your source chain, choose the token you want to bridge, select BitcoinL1 as the destination, enter the amount, and confirm the transaction. The bridge will handle the cross-chain transfer instantly.
To build on BitcoinL1 you can use thirdweb, which provides an easy way to build, monetize and scale your apps, games or agents. You can find detailed guides and documentation on https://portal.thirdweb.com to get started quickly.
To add BitcoinL1 to your wallet, you can connect your wallet and click on [Add to Wallet] button at the top of the page. Alternatively, you can add the network manually using the RPC URL and chain details and add it to your wallet's network settings.
To send BTC on BitcoinL1, ensure your wallet is connected to the BitcoinL1 network, enter the recipient's address, specify the amount of BTC to send, review the gas fee, and confirm the transaction in your wallet.