Demo: https://stepansnigirev.github.io/emoji-wallet/

Mnemonic seed with emojis instead of words. Evening fun project, without any real applications, just for fun.

You can generate a private key and show it as a sequence of emojis. This sequence has a checksum (like in electrum, derived from hash, not from the wordlist) and you can actually use these private and public keys in any wallet.

Emoji seed can be used in electrum directly:

A web page generates a random seed and represents it as a sequence of emojis:

😡🎧💆🕋🎌🏣🚪😆👦📻🕯💷🤝☁️

All the emojis are unicode symbols, we can take a hash of this sequence and get the value. This hash should start with 01 to make sure there is no typo.

01665d55151280dc3a2b1545fd5ba0a2c735bdb3f78f0f93991a318a7ce1f7ac0c95ece0189f2b73987bd629d790eaf846af9a33e7d7261aff99fd304d839d04

Hash is calculated like in electrum:

HMAC(key="Seed version", data="😡🎧💆🕋🎌🏣🚪😆👦📻🕯💷🤝☁️")

We can derive HD private and public keys from the hash:

xprv9s21ZrQH143K2yqyJAbtE6EYFhJdDGCYgeCPXPUnUh5VUvh5HbfCXGRy7CGmkNfD5QpVDamcYDXJg7AA68HF8jVHEYgSx4iJasNvg1tg7V3

xpub661MyMwAqRbcFTvSQC8tbEBGoj97civQ3s7zKmtQ32cUMj2Dq8yT54kSxSiUq3NL8JpgdTywygrFERKrBvJGjc4AgZ6GK3KfxMZs3L2a6pU

With electrum everything is pretty simple: create a new wallet and enter emoji sequence as a seed. In other wallets import master private key instead.

Emoji transactions:

• https://blockchain.info/xpub/xpub661MyMwAqRbcFTvSQC8tbEBGoj97civQ3s7zKmtQ32cUMj2Dq8yT54kSxSiUq3NL8JpgdTywygrFERKrBvJGjc4AgZ6GK3KfxMZs3L2a6pU
• https://bitcoinexplorer.org/xyzpub/xpub661MyMwAqRbcFTvSQC8tbEBGoj97civQ3s7zKmtQ32cUMj2Dq8yT54kSxSiUq3NL8JpgdTywygrFERKrBvJGjc4AgZ6GK3KfxMZs3L2a6pU