About

This tool creates Bitcoin Paper Wallets entirely within your browser using cryptographically secure random number generation. It is designed for Cold Storage purposes, meaning the keys are generated offline (if you disconnect your internet) and never touch a server.

The process utilizes the secp256k1 elliptic curve algorithm. A random 256-bit scalar k (Private Key) is multiplied by the generator point G to produce the Public Key K. This public key is then hashed using SHA-256 and RIPEMD-160 to produce the final address.

Security Warning: For maximum security, download this page, disconnect your internet, generate the wallet, print it, and then close the browser. This prevents malware or network sniffers from intercepting your private key.

Formulas

The Bitcoin address generation pipeline follows a strict mathematical path ensuring collision resistance and checksum validation.

1. Public Key Generation:
K_pub = k_priv × G

2. Hashing (Hash160):
H = RIPEMD160(SHA256(K_pub))

3. Encoding (Base58Check):
Address = Base58(0x00 || H || Checksum(H))

Where Checksum is the first 4 bytes of SHA256(SHA256(Payload)).

Reference Data

Standard	Prefix	Description	Use Case
P2PKH	1...	Legacy Address (Pay to Public Key Hash)	Most compatible, slightly higher fees.
P2SH	3...	Pay to Script Hash	Multi-sig and Segwit wrappers.
Bech32	bc1...	Native Segwit	Lowest fees, modern standard.
WIF	5, K, L	Wallet Import Format	Format for importing Private Keys.
Curve	secp256k1	Koblitz Curve	The math defining Bitcoin ownership.

Frequently Asked Questions

Yes, IF the code runs strictly client-side. This tool uses the browser's native "window.crypto" API and custom JS implementations for Elliptic Curve math. No data is sent to any server. For absolute safety, run this page while disconnected from the internet.

A Paper Wallet is a physical document containing your Public Address (to receive funds) and Private Key (to spend funds). It is a form of "Cold Storage" because it is offline and immune to computer viruses unless physically stolen/scanned.

To receive Bitcoin, share the "Public Address". To spend Bitcoin, import the "Private Key" (WIF format) into a software wallet like Electrum, BlueWallet, or Trust Wallet.

This tool generates P2PKH (Legacy) addresses, which always start with the number 1. These are the most universally supported address types, making them ideal for long-term paper storage compatibility.

No. In Bitcoin, there is no "Forgot Password". If you lose the Private Key, the funds are mathematically locked forever. Keep your paper wallet safe, fireproof, and waterproof.