| description | A decentralized framework for digital legacy planning — give your crypto a survivable plan, without trusting a centralized custodian. |
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Crypto security has matured. Smart contracts get audited, wallets get hardware-hardened, users get more discerning. Legacy planning for crypto has not kept up. Most "solutions" still rely on centralized custodians, legal instruments designed for fiat assets, or a scrap of paper shoved in a safe that nobody remembers where.
10102 Computing Legacy is a small, auditable set of Ethereum smart contracts — plus a thin app on top — that lets you define the rules for how your on-chain assets pass on, and executes them automatically when those rules are met. No custody. No subscription required for the core flows. No middleman the plan depends on.
- Transfer legacy — split specific assets across named Ethereum addresses when you've been inactive for a configurable window. Created from your connected EOA wallet (MetaMask, Ledger, Trezor, Rainbow, Coinbase Wallet, WalletConnect-compatible mobile wallets).
- Multisig legacy — hand over control of an existing Safe to your beneficiaries by adding them as co-signers when the inactivity window elapses. The Safe itself, and everything it holds or governs, is the legacy.
- Timelock — a time-based security layer for your own funds: lock assets until a specific date (protecting against coercion, wrench attacks, or your own impulses). Three flavors: Timelock, Soft Timelock, Timelocked Gift.
- Premium layer — optional contingent beneficiaries (fallback layers), authorized watchers (read-only oversight accounts), and email reminders. All additive; the core flows work without them.
Every feature in this app is operable directly from the Ethereum contracts — without our UI, without our servers, without our company. That's not an afterthought; it's the point.
- Contracts are verified on Etherscan. Anyone can call them from any Ethereum interface.
- Code and audits are public. See github.com/10102-io/computing-sc and github.com/10102-labs/audits.
- The Legacy Claim Card is printable. Every legacy produces a one-pager documenting the contract address, legacy ID, and activation instructions — enough for a beneficiary to claim via Etherscan even decades from now. See Legacy Claim Card.
- Upgrades are Safe-controlled, not founder-controlled. The
DefaultProxyAdminfor all upgradeable contracts is owned by a multisig.
If our website goes down tomorrow, your legacy still works. That's the entire bet.
- Ethereum — the settlement layer. Mainnet + Sepolia for testing.
- Safe — wallet infrastructure for all multisig-based flows (Safe Guard + Safe Module patterns).
- The Graph — subgraphs index legacy contracts, token balances, and activity, so the UI stays fast without trusting any single RPC.
- Mailjet — transactional email delivery for the off-chain reminder worker. Email scheduling, encryption, and delivery live entirely off-chain; activation itself never depends on it.
Any wallet that speaks a standard Ethereum connector works: MetaMask, WalletConnect (covering most mobile wallets), Coinbase Wallet (extension, mobile, and passkey-based smart wallets), Ledger + Trezor (direct or via Ledger Live / Trezor Suite), Rainbow, and others. ENS names render everywhere addresses do.
You can switch networks inside the app. Sepolia is the public testnet: identical flow, free test ETH, activation windows configurable in minutes instead of days so you can exercise the whole cycle in a short session. Mainnet is production — real assets, real value, real consequences.
- New users → start with the User Guide, in particular Concepts for the vocabulary.
- Technical readers → Architecture explains the contracts, the subgraph layer, and the email infrastructure.
- Engineers / contributors → Design & Engineering Notes covers the "why" behind the harder design decisions.