Locked Out of Your Ethereum Wallet? We Fix That
Our Services
- Decrypting Ethereum Json Files
- Lost or Forgotten Ethereum Presale Password Recovery
- Corrupted Eth Json File
- Ethereum Presale Wallet Private Key Export
We Can Help You If
- You forgot (or never set) a password
- Your JSON file is corrupted
- Your wallet tool (e.g., Mist) no longer works
- You have partial password hints
KEYCHAINX RESEARCH · HISTORICAL SNAPSHOT
The presale wallets that stayed dormant
KeychainX’s company-reported study scanned 8,893 presale genesis addresses on 19 July 2026. It classified 621 addresses with nonce zero as dormant, holding 1,421,008 ETH at that date.
Dormancy does not establish lost keys, ownership or recoverability. These figures are a dated snapshot, not live balances. Reproducing the totals requires the study’s address set and the same historical block state.
Ethereum JSON File Decryption
Original Ethereum presale JSON wallets use an encseed field, AES-128-CBC encryption and PBKDF2-HMAC-SHA256 with 2,000 iterations. The password is also used as the PBKDF2 salt; the first 16 derived bytes form the key, and the first 16 bytes of encseed form the IV. This differs from later Web3 Secret Storage V3 keystores, which commonly use AES-128-CTR with scrypt or PBKDF2. See the go-ethereum presale implementation.
Password Recovery
Password recovery starts with the wallet format and the owner’s remembered password patterns:
- Likely words, spelling and capitalization
- Remembered lengths, dates and character substitutions
- Keyboard layout and encoding differences
️Corrupted JSON Repair
Assess damaged wallet files and available backups. Repair depends on what survives; missing encrypted seed data cannot be recreated from the public address alone. Possible damage includes:
- Hard drive failures
- Legacy software bugs (Mist Wallet, early MyEtherWallet)
- Email/file encoding errors
Ethereum Presale Password Requirements
The presale wallet file does not record a universal password length or complexity rule. We have not verified the previously stated requirements of 10 characters, mixed case, numbers and symbols against every historical purchase tool. Recovery candidates should follow what you remember and should not be excluded solely by those assumptions. Ethereum’s original purchase guide describes choosing and safeguarding a password.
Ethereum During Presale
In 2014, Ethereum initiated a 42-day presale from July 22 to September 2, offering early adopters the opportunity to purchase Ether (ETH) using Bitcoin (BTC). The initial exchange rate was set at 2,000 ETH per BTC for the first 14 days, after which it gradually decreased to 1,337 ETH per BTC. This strategic pricing model incentivized early participation and aimed to fund the development of Ethereum’s decentralized platform. The presale concluded with the sale of over 60 million ETH, raising approximately 31,591 BTC, valued at around $18.3 million at that time. These funds were instrumental in financing the subsequent development and launch of the Ethereum network.
The Process Was As Follows:
- Accessing the Presale Portal: Participants visited Ethereum’s official website and acknowledged the terms and conditions
- Specifying Purchase Details: Users entered BTC amount to exchange for ETH
- Providing Email and Creating a Password: Buyers chose a password and supplied an email address; keeping the password and wallet backup was essential
- Generating the Wallet: Mouse movement generated entropy for wallet creation
- Downloading the Encrypted JSON File: Private key file downloaded and emailed
- Completing the BTC Transaction: Final BTC transfer to Ethereum address