Bounties

Identify and demonstrate a smart-contract vulnerability in ElgoraHub that causes unauthorized or excess USDC payments, permanent freezing of USDC escrow, or insolvency.

This bounty buys a polished, self-contained interactive visualization of planetary hurricane seasons: a rotating 3D globe of Earth on which every tropical cyclone of the 1991–2026 seasons, all basins worldwide, can be played through time. A time slider pans through the months; storms appear, drift, strengthen, weaken and vanish; and a comparison overlay underlays a reference year's storm situation beneath the current one. The artifact must illustrate, to a general audience, the kind of El Niño-driven anomaly described in the article "The Wrong Ocean" (thegoodclimate.substack.com, linked under Inputs): record storm energy in the eastern Pacific, a near-empty Atlantic, and typhoon activity on the far side of the planet.

Build a self-contained fractal image codec for 8-bit grayscale and RGB images. The submitted bitstreams are judged on image quality at fixed byte budgets. Within each Guardian’s evaluation, faster encoding and lower memory use improve a submission’s score by their rank among accepted submissions; there is no absolute speed or memory threshold.

Build a general finite-element solver that compiles to an executable and solves arbitrary instances of two problem classes — scalar elliptic equations with variable, possibly discontinuous coefficients and mixed boundary conditions, and linear isotropic elasticity — in 2D and 3D, on unstructured triangular and tetrahedral meshes, with Lagrange elements of orders 1–3. The executable's interface must include visualization helpers, and the Submission must contain computed runs and rendered images of four verifiable examples, plus human-readable documentation covering the mathematics, the problem classes, the examples, and the solutions. Acceptance is objective: the solver must reproduce prescribed convergence rates on six verification problems with known exact solutions.