# staking
> ⚠️ **Experimental — generated with no human supervision** by the daily MCP pipeline (Solidity→Gno port). Not audited. See [r/moul/x/daily](https://github.com/moul/gno-contracts/blob/main/r/moul/x/daily/README.md).
---
A simplified, accounting-only port of Synthetix **StakingRewards** to a gno.land realm.
It reproduces the classic "reward-per-token" accumulator: stakers add or remove a
fungible `uint64` amount, and rewards accrue on every block proportional to each
staker's share of the total staked, at a fixed `rewardPerBlock`. Instead of real
coin transfers, staked amounts and rewards are tracked as plain `uint64` balances,
and `runtime.ChainHeight()` is used as the deterministic clock. A global accumulator
plus per-account snapshots make accrual O(1) per interaction — no loop over stakers.
## Transactions
- `Stake(amount)` — add `amount` to your staked balance.
- `Withdraw(amount)` — remove `amount` from your staked balance.
- `GetReward()` — mint your accrued rewards into your reward balance; returns the amount.
## Read-only
- `Earned(addr)` — rewards currently owed to `addr`, projected to the current block.
- `StakedOf(addr)` — current staked balance of `addr`.
- `Render(path)` — Markdown: total staked, reward rate, block height, and a stakers table.
## Example
```go
staking.Stake(cross, 100) // stake 100 units
// ... blocks pass, rewards accrue ...
staking.Earned(myAddr) // check pending rewards
staking.GetReward(cross) // claim into reward balance
staking.Withdraw(cross, 40) // unstake 40
```
<!-- BEGIN GNOCONTRACTS FOOTER (generated by `make readmes`; do not edit below) -->
---
Part of **[moul/gno-contracts](https://github.com/moul/gno-contracts)** — moul's versioned gno.land contracts. See the repository for the full catalog, build/test tooling, and usage.
**Dependency graph:**
> 🧪 **Highly experimental — potentially vibe-coded.** Not audited; may break, change, or be removed at any time. Do not use with anything of value. Full disclaimer: [DISCLAIMER](https://github.com/moul/gno-contracts/blob/main/DISCLAIMER.md).
<!-- END GNOCONTRACTS FOOTER -->
Earned(addr string) uint64
GetReward(cur interface {.seal func(); Address func() .uverse.address; IsCode func() bool; IsCurrent func() bool; IsEphemeral func() bool; IsUser func() bool; IsUserCall func() bool; IsUserRun func() bool; PkgPath func() string; Previous func() .uverse.realm; String func() string; Sub func(string) .uverse.realm; Subpath func() string}) uint64
Render(path string) string
Stake(cur interface {.seal func(); Address func() .uverse.address; IsCode func() bool; IsCurrent func() bool; IsEphemeral func() bool; IsUser func() bool; IsUserCall func() bool; IsUserRun func() bool; PkgPath func() string; Previous func() .uverse.realm; String func() string; Sub func(string) .uverse.realm; Subpath func() string}, amount uint64)
StakedOf(addr string) uint64
Withdraw(cur interface {.seal func(); Address func() .uverse.address; IsCode func() bool; IsCurrent func() bool; IsEphemeral func() bool; IsUser func() bool; IsUserCall func() bool; IsUserRun func() bool; PkgPath func() string; Previous func() .uverse.realm; String func() string; Sub func(string) .uverse.realm; Subpath func() string}, amount uint64)
Signatures reconstructed verbatim from vm/qfuncs — interface params keep their inline definitions.
vm/qrender output, sanitized (docs/render-security.md) and displayed in an empty-sandbox iframe — scripts, forms and popups cannot run. Links stay inert in-preview; right-click to open.