⚡ Transaction Builder & Signer

Build and sign Cardano transactions using pure PHP. Test your wallet tools app!

🔐 Ed25519 📦 CBOR 🔨 Anvil API ✍️ Pure PHP Signing
🚧

Feature Coming Soon

We're putting the finishing touches on this transaction builder. Check back soon!

Build & Sign Transaction

Send ADA using Anvil API + PHP signing

1 Build Transaction
The address sending ADA (must have funds)
Where to send the ADA
Minimum 1 ADA
2 Sign Transaction
Use the skey_hex from the wallet generator
3 Submit to Blockchain

Transaction Submitted Successfully!

How It Works

1
Build Transaction

Anvil API handles UTxO selection and fee calculation

2
Sign with PHP

Pure PHP CBOR decoding + Ed25519 signature creation

3
Submit to Chain

Anvil submits the signed transaction to Cardano

Security

  • Private key never sent to Anvil
  • Signing happens server-side in PHP
  • Uses Sodium's Ed25519 implementation
  • Transaction hash verified before submission

Tech Stack

Anvil API Transaction building & UTxO management
CBOR Parser Pure PHP implementation
sodium_* Ed25519 signing & Blake2b hashing
WordPress AJAX endpoints for API calls

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