[ANN] Cinexa — Bitcoin research tools, signature checks, and a Signet faucet

[Cinexa]

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.fun
All tools: https://cinexacode.fun/tools
Privacy: https://cinexacode.fun/privacy

What 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 itself

There 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.

• Chrome Web Store
  
• Userscript and download notes
  

The tools are free to open. Questions and corrections are welcome in this thread.

[SFR10]

Flow Explorer — a hop map of inflows and outflows around a seed address, with USD values and entity labels.

• Light mode isn't extending to the flowchart.
• It'd be better if the upper half with some explanations didn't take up so much space on the page ^{[it's roughly 40% on a full screen and a bit larger in smaller windows]}.
• It appears that labels are only pulled from a database, but we're not allowed to add them on our end ^{[it'd be nice if you could reconsider this]}.
• A modular design that lets us move different parts could come in handy for addresses with many connections.

BTW, great set of tools

[Cinexa]

• Light mode isn't extending to the flowchart.
• It'd be better if the upper half with some explanations didn't take up so much space on the page ^{[it's roughly 40% on a full screen and a bit larger in smaller windows]}.
• It appears that labels are only pulled from a database, but we're not allowed to add them on our end ^{[it'd be nice if you could reconsider this]}.
• A modular design that lets us move different parts could come in handy for addresses with many connections.

BTW, great set of tools

I appreciate your feedback SFR10. Here is latest changelog based on your feedback.

- Light mode applied to the flowchart (shell, cards, edges, legend, controls).
- Upper controls shortened so the graph gets more space.
- Cards can be dragged freely; Reset layout restores the default columns.
- Private address labels for signed-in users only.
- Label address button next to Explore, plus Label on each card.

- Username + password signup/login (no email).
- Flow data: list of private labels with Open links into Flow Explorer.
- Privacy policy updated for accounts and private labels.

[SFR10]

I appreciate your feedback SFR10. Here is latest changelog based on your feedback.

Wow, thank you for making these changes in a timely manner...

• - Cards can be dragged freely; Reset layout restores the default columns.
  

  I noticed there's a limit that cuts off flow lines when I drag the cards beyond the invisible box/rectangle ^[screenshot]. Is it possible to lift those limits?
  
  

• - Flow data: list of private labels with Open links into Flow Explorer.
  

  For some reason, clicking the open links in flow data appears to break flow explorer ^{[unless you were doing something in the background at that time]}:
  
  
  
  

[Cinexa]

Thanks again, SFR10, both are fixed and live.

I noticed there's a limit that cuts off flow lines when I drag the cards beyond the invisible box/rectangle ^[screenshot]. Is it possible to lift those limits?

The canvas now grows with the cards, so edges stay connected when you drag past the old bounds.
Also tightened drag so cards stay with the cursor instead of jumping away while the stage rebases.

For some reason, clicking the open links in flow data appears to break flow explorer ^{[unless you were doing something in the background at that time]}:

Fixed. Legacy Base58 addresses were being lowercased on save; casing is preserved now, so Open loads the right address in Flow Explorer.

Now, we have added flow direction. Each edge has one slow moving dot in the coin-flow direction, plus arrow tips on the lines, so direction is easier to read.

[SFR10]

[...]

You're a legend

[Cinexa]

[...]

You're a legend

This is what usually the Legends say to ordinary peoples because they are humble.
My forum rank says I am a member, while your rank shows Legendary!

I appreciate your help and feedback.

[SFR10]

This is what usually the Legends say to ordinary peoples because they are humble.
My forum rank says I am a member, while your rank shows Legendary!

I'm just a normal user who's been part of this forum for over a decade, whereas you're someone who has made useful tools for the community ^{[that right there, sir, is the true definition of a legend]}

[Cinexa]

I'm just a normal user who's been part of this forum for over a decade, whereas you're someone who has made useful tools for the community ^{[that right there, sir, is the true definition of a legend]}

I don't know if I really deserve this kind of compliments, but I feel honored.
Thank you and I appreciate your help.

[KYCLESS]

I have to give credit to SFR10 here as well. This thread is a good example of what useful community feedback should look like: specific observations instead of generic “nice project” comments.

What impressed me even more is that Cinexa actually implemented most of that feedback instead of just acknowledging it. The Flow Explorer seems to have improved quite a bit in just a few days.

One thing I’m curious about is the entity-labeling side of the Flow Explorer. Where do the public labels come from, and do you have any kind of confidence or provenance system behind them?

For blockchain analysis tools, a wrong label can sometimes be more misleading than having no label at all, especially when ownership changes or attribution comes from indirect sources. It would be interesting to see something like source + confidence level + last verified date for each public label.

Private user labels are already a nice addition. If community-submitted public labels are ever introduced, I think keeping a clear separation between verified, heuristic and user-submitted attribution would make the tool considerably stronger.

Anyway, good work so far. I’ll be following the Flow Explorer in particular.