wstGBP Developer Docs

wstGBP (Wren Staked tGBP) is a NAV-accruing, non-rebasing ERC-20 on Ethereum mainnet that wraps tGBP, a GBP-denominated real-world asset (RWA). A price oracle is poked on a regular cadence (currently weekly), so one wstGBP redeems for a growing amount of tGBP. That accrual is the “staked” in the name. How the pieces fit together is covered in Architecture.

This site is a developer integration reference. Everything here is public and verifiable on-chain: contract addresses, ABIs, function signatures, fees, and the subgraph schema. It is not investment advice and documents no private or business information.

What wstGBP is

• It is a wrapper, not a new unit of account: tGBP paid in mints wstGBP, and burning wstGBP returns tGBP. Supply is always backed by tGBP held by the contract.
• Balances never change. The redemption price rises as the oracle is poked, with no rebasing (see the NAV mechanic).
• Minting and redemption are permissionless: no allowlist, no administrative approval, and redemption is atomic. User-facing calls are screened against the ban list wstGBP inherits from tGBP (see Architecture).
• The token contract is modular: it holds six immutable module references, most of them behind proxies, described in Architecture.

Who this is for

• Integrators wiring mint/redeem into a dApp, vault, or router.
• DEX aggregators and solvers routing swaps through the Uniswap v4 backstop pool or the direct adapter, and CoW Swap order hooks via the hook helper.
• Bridge and multichain builders moving wstGBP to L2s and sidechains.
• Data and analytics teams indexing supply, holders, price, and redemptions.

Start here