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Description Stonecards give each of your seed phrases its own home. Credit-card sized, waterproof and tear-resistant, and built to survive the places a backup actually ends up: a safe, a deposit box, a drawer at your parents' house. Running multisig? Give each key its own card and keep the cards in separate places. One card in the wrong hands isn't enough to reach your funds. Pair them with the Ghost Pen and your entries stay invisible until a UV light hits them. Specs Stone paper: waterproof, tear-resistant, smooth to write on Credit-card sized: fits a wallet, a safe, or a deposit box Front: numbered boxes for a 12-word seed phrase Back: 27 numbered boxes for phrases up to 24 words, plus notes Multisig ready: one card per key Ghost Pen compatible: invisible ink writes and reads cleanly on stone paper (pen sold separately) Tree-free: made from limestone, no trees, no water, no bleach Available in 10-packs and 20-packs Best practice: store each card in a fire-rated safe and keep your backups in separate locations. Shipping Free U.S. shipping on every order Orders ship within 2 business days Discreet, unbranded packaging Worldwide shipping available International orders subject to customs & duties
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🇺🇸 Ship from USA · On Agora since 2026
$17.95