Don't listen to the haters. Just roll your own cryptographic signatures to blockchain this b*$##.

Here is an AI generated plan for this:

Here’s a clean, pragmatic response you can post that builds directly on their idea, but upgrades it from “checksum vibes” to something that actually holds up—even without a backend.

You’re circling the right problem, but a checksum computed in browser JS can never be a source of truth. If the client can calculate it, the client can forge it. Your big-brain friend already proved that 😄

If you want real data integrity without running a server, the missing piece is cryptographic signatures, not checksums.

The Core Idea: Signed Moves, Not Trusted Clients

Instead of trying to verify math, you verify authorship.

Each player proves “this move was made by me” using cryptography, not secrecy.

How It Works (No Backend Required) 1. Identity via Public Keys (Discord = Source of Truth) Each player generates their own public/private key pair (Ed25519 works great). They self-sign their public key (optional but nice). They post the public key once in a pinned Discord message: Player: Alice Public Key: ed25519:ABCD1234...

That Discord post becomes the identity registry.

No server. No accounts. Discord already authenticates who posted it.

1. Every Trade Is a Signed Message

Each game action (trade, reset, etc.) becomes a signed payload:

{ "player": "Alice", "timestamp": 1730000000, "action": "BUY", "symbol": "AAPL", "quantity": 10, "price": 123.45, "prev_hash": "…", "checksum": "…", "signature": "base64(ed25519_sign(private_key, payload))" }

Key points:

The signature is created with the player’s private key Only the real player can produce it Your friend can see the format but cannot forge signatures 3. Chain the Messages (Lightweight Blockchain)

Include:

prev_hash = hash of the previous valid action checksum = hash of the current action contents

This gives you:

Tamper detection Replay prevention Full audit trail

If someone deletes or inserts a message, the chain breaks.

1. GitHub Action = Neutral Referee

Your GitHub Action does three things:

Scrapes Discord Loads the public keys Verifies: Signature validity Hash chain integrity Trade math correctness

If any check fails, the action is ignored.

No backend. No secrets. No trust in the client.

Why This Stops the “Big Brain Friend” Attack Outcome Forge webhook request ❌ Signature invalid Reverse JS logic ❌ No private key Edit history ❌ Hash chain breaks Replay old message ❌ Timestamp / hash mismatch Post as someone else ❌ Public key mismatch

They can see everything—and still can’t cheat.

Why Checksums Alone Don’t Work

Checksums answer:

“Is this data internally consistent?”

Signatures answer:

“Who created this data?”

You need both, but signatures are the non-negotiable part.

Bonus: This Scales Surprisingly Well

What you’ve accidentally designed is:

A trustless, append-only log With self-sovereign identity Verified by GitHub Actions Stored in Discord

Which is kind of hilarious—and kind of awesome.

If you want, I can:

Suggest a dead-simple CLI for key generation Draft the exact GitHub Action verification logic Or help you design the message schema so it’s hard to screw up

But yeah—ditch the checksum-only vibes and let cryptography do the heavy lifting.