Arbitrum Fellowship · Sponsored by Arbitrum DAO · Powered by CoBuilders
Application: Arbitrum Ecosystem Fellowship
Team: Augusto Collerone, Joaquin Paz Marchese, Ignacio Quesada
Milestone: Supervised Development Phase
Funding Amount Unlocked: 4,000 USD
Date Submitted: [31/08/2026]
During the Supervised Development Phase, the cohort of senior LATAM engineers moved from the structured curriculum into building two public open-source tools on Arbitrum Stylus, working in supervised teams. Both repositories are public with code pushed, and all fellows are contributing. The Stylus Ecosystem Dashboard is already live and indexing real on-chain Stylus activity, and the Stylus Compatibility Registry has a working CLI prototype.
The phase covers the milestone's four workstreams: the initial Stylus metric indexing logic, an early version of the Stylus Ecosystem Dashboard, the initial architecture and prototype for the second tooling initiative, and documentation of the data model and indexing logic. The public deliverable is the two open-source repositories with working prototypes and their architecture documentation.
Two open-source projects are being built during this phase. Each has a public scope document and repository:
| Project | Scope document | Repository | Status |
|---|---|---|---|
| Stylus Ecosystem Dashboard | Scope document | CoBuilders-xyz/stylus-dashboard | Live: stylus-dashboard.up.railway.app |
| Stylus Compatibility Registry | Scope document | CoBuilders-xyz/stylus-compatibility-registry | Working CLI prototype |
The Dashboard indexes Stylus activity directly on chain: it tracks events from the ArbWasm (0x71) and ArbWasmCache (0x72) precompiles and identifies Stylus contracts by their 0xEFF000 bytecode prefix, writing normalized records into PostgreSQL exposed through a Hasura GraphQL API. It is built on Envio HyperIndex, in the packages/indexer workspace of the Dashboard repo. The logic is live and producing data: as of 31/08/2026 it had indexed 1,036 Stylus contracts, 94 unique deployers, 23 activations and 20 reactivations (the figures update continuously; the Stylus contract count is under active validation, as the indexer is being audited.