Most of my public work is either a protocol implementation I maintain or a bug I found in something I depend on, then a patch for it. Where a fix landed as someone else's PR, that's named — the report was mine, not the patch.

Three Stellar products below (Periplo, Nirium, Contextio) share real upstream dependencies — same protocols, sometimes the literal same bug — so each fix is attributed to the specific project it came from, not merged into one pile.

Snapshot re-verified live against the GitHub API on 2026-10-09; the search links at the bottom always supersede it.

Kumply (Avalanche) — three open bug reports against a third-party community skills repo, Ayomisco/avaxskills, found while building on top of it: #2 (a subnet-deployment skill cites CLI commands that don't exist in the real ava-labs/avalanche-cli), #3 (a precompiles skill has the wrong genesis key name for TxAllowList), #4 (a wagmi skill cites an outdated version and a deprecated hook). All still open. I'm an official Team1 LatAm collaborator — an Avalanche-ecosystem-wide role, not tied to a single project. Also shipped AgentHub Protocol for Avalanche's Hack2Build: Payments x402 hackathon — real x402 micropayment code, on-chain agent reputation, and DeFi integration code for Trader Joe, Benqi, and Aave V3. SDK published on npm, contracts deployed to Fuji testnet — dormant since January 2026, stated plainly rather than presented as active.

Vouch402 (Base) — base/skills#152, an open PR adding a Vouch402 listing to Base's own community skills catalog. Also eas-sdk#132 (closed, fixed) and foundry-rs/foundry#16209 (cast wallet new <name> failed with a bare account name — closed 2026-09-09, fixed by @riba2534 in #16219), both found auditing tooling Vouch402 depends on. I hold the Based Developer Ambassador role in Base's own Discord — real and active.

Prova (Solana) — otter-sec/anchor#4960, bumping heck 0.3 → 0.5 to drop an unbounded edition2024 dependency landmine in the Anchor framework Prova's on-chain program is built on — merged 2026-09-30 by @jamie-osec.

Full first-hand narrative with transaction hashes and reproduction steps lives in Eras256/Periplo's own README.

Merged

Open fix PRs

Bug reports that landed

• x402#3171 — paymentRequirementsMatchAccepted threw on a missing/null payload.accepted. I found and reported it; fixed by @JasonColapietro in #3180, merged 2026-08-17.
• x402#3169 — isValidRouteTemplate's traversal/scheme-injection checks decoded routeTemplate only once, so double percent-encoding bypassed both. Filed with full repro; fixed by @ygd58 in #3213, merged 2026-09-09.
• x402#3270 — HTTPFacilitatorClient.settle()/verify() decoded the EXTENSION-RESPONSES header and discarded it. Fixed on Periplo's own side the same day; the actual upstream fix was the maintainer's own #3306 (Python, @phdargen), introducing a dedicated field instead of reusing extensions — rejecting the shape my own workaround used. My /settle still uses the old shape pending a migration to the new field, now available since @x402/core has moved to 2.28.0.
• eas-sdk#132 — getUIDsFromAttestReceipt trusted log topic0 without checking the emitter address. Closed as completed by the maintainer 2026-08-27, fixed in eas-sdk 2.10.0.
• OpenZeppelin/stellar-contracts#839 — hit UnreachableCodeReached combining Signer::Delegated with a CallContract rule. Closed 2026-09-02, resolution: ours — a construction bug in how the auth entries were built, not a library gap.
• js-stellar-sdk#1655 — needsNonInvokerSigningBy()/signAuthEntries() only see the top-level node of a CAP-71 delegate credential. Filed with my own fix, #1672 (closed unmerged), superseded by the maintainer's own #1747 (merged 2026-09-28).

Still open, awaiting maintainer response: x402-foundation/x402 #3121, #3148.

Upstream, to repos Nirium doesn't own

A real design collaboration, not a bounty: issue #96 (opened by me) was designed and tested by @CodeDeityX, who built the public reproducibility harness. Merged as #98 — nirium@0.16.0, now on npm, ships an optional policy hook on initX402().

GrantFox bounty program (nirium-protocol/nirium, Nirium's own repo — these are bounties Nirium posted). As of 2026-09-05: 44 issues across three campaigns, 42 real bounty asks — 20 delivered inside nirium itself, 2 delivered externally and awaiting that project's own review, 4 closed and administratively recreated, 16 closed without delivery.

Moved from a personal repo to its own org — Eras256/Contextio now resolves to contextio/Contextio. Runs its own bounty-style program (not GrantFox-labeled): five open issues, none delivered yet, two with competing external PRs open and unreviewed. Upstream, three merged PRs added/refined its community-skill listing on stellar/stellar-dev-skill (#98, #101, #102). Beyond that, no upstream contribution from this account to any other external repo specifically for Contextio — said plainly, not padded.

• Creit-Tech/Stellar-Wallets-Kit#105 — signMessage()'s JSDoc says SEP-43 hex, Freighter returns base64. Open.

Separate weekend builds, no public repo for any of the three. Two have the event's own announcement naming the winner; the third only has my own tweet — disclosed as such, same standard as everywhere else here.

• ActivaChain — won ETH Uruguay 2025, with Monserrat. Confirmed by the event.
• CreatorChain — 1st + 3rd place at ETH Mexico Monterrey 2025. Confirmed. Solo build.
• BioShield Insurance — won the FDA Track at DeSci Builders Hackathon 2025, with Monserrat. Deployed across Solana, Base, and Optimism. Self-reported, my own tweet at the time.