Bitcoin Learning Sandbox Simulate wallets, UTXOs, mempool fees, block mining, and security lessons - no node required. Bitcoin Signature Verifier Verify BIP-137 message signatures for legacy, SegWit, and Bitcoin Core signed blocks. PGP Signature Verifier Validate OpenPGP clearsigned messages against an ASCII-armored public key. Bitcointalk Forum Dossier One lookup for a forum user: BPIP ranks, Loyce ban/DT1 signals, and BitList posts + BTC addresses. Fee Estimator & RBF/CPFP Lab Explore vsize, feerates, mempool position, RBF bumps, and CPFP child packages - no wallet required. Address & Script Decoder Paste a Bitcoin address or script hex - see P2PKH, P2WPKH, P2SH breakdown, witness data, and fee/privacy notes. BIP39 Checksum Lab Validate seed phrase checksums offline - learn backup hygiene without generating or storing keys. PSBT Inspector Read-only Partially Signed Bitcoin Transaction decoder - inputs, outputs, partial sigs, sighash types. Flow Explorer Multi-chain flow map (BTC, ERC-20, BEP-20, TRC-20) - USD values, entity labels, click-to-expand hops. sBTC Faucet Automatic Bitcoin Signet faucet - request a small sBTC payout to a Signet address. Forum Post Checker Paste a Bitcointalk post and check addresses, Bitcoin signatures, PGP blocks, and BitList hits. Address Check One card for script type, checksum, public label, BitList posts, and a short activity note. Transaction Reader Read a transaction id or raw hex: inputs, outputs, fee, locktime, and RBF. OP_RETURN Reader Read a message stored in an OP_RETURN output. Payment Link Reader Read a bitcoin: link for the address, amount, and label. No wallet. View all tools Open the full tools directory

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