Cinexa is a free set of Bitcoin and Bitcointalk research tools. It is built for checking signatures, and looking at how coins move. Nothing on the site is a custodial wallet, and nothing here asks for a seed phrase.
Site: https://cinexacode.funAll tools: https://cinexacode.fun/toolsPrivacy: https://cinexacode.fun/privacyWhat you can use- Bitcoin Signature Verifier — BIP-137 signatures from Electrum, Trezor Suite, and Bitcoin Core for legacy, nested SegWit, and native SegWit addresses. Taproot key-path signatures are checked with BIP-322 simple. Script-path and multisig are not supported.
- PGP Signature Verifier — clearsigned OpenPGP messages against an ASCII-armored public key.
- Bitcointalk Forum Dossier — one lookup for a forum user: public profile signals, merit, and shared Bitcoin addresses.
- Flow Explorer — a hop map of inflows and outflows around a seed address, with USD values and entity labels.
- Fee Estimator and RBF/CPFP Lab — vsize, feerate, mempool position, RBF bumps, and CPFP, with no wallet.
- Address and Script Decoder — P2PKH, P2WPKH, P2SH, and related script breakdowns.
- PSBT Inspector — a read-only look at inputs, outputs, partial signatures, and sighash types.
- BIP39 Checksum Lab — checks a seed-phrase checksum in the browser. It does not generate or store keys.
- Bitcoin Learning Sandbox — simulated wallets, UTXOs, fees, and blocks. No node and no real coins.
- sBTC Faucet — small automatic payouts on Bitcoin Signet. These coins have no mainnet value. A captcha and a cooldown are required.
On the forum itselfThere is a Chrome extension and a Tampermonkey userscript for the same Bitcointalk checks: Bitcoin and PGP signature verification on posts, plus shared-address warnings while you browse.
The tools are free to open. Questions and corrections are welcome in this thread.
