GDBS runs real, deterministic physics engines in the browser and checks each one against an external published or analytic reference. Below is one page per result: the method, the number, the citation, and the honest scope. GDBS is a bridge to HPC, not a replacement for it.
Badge: Verified reproduces an external published value with no calibration. Self-check a numerical-consistency test (convergence order or constraint preservation), not a data comparison.
GW150914 chirp mass Verified
28.72 vs 28.6 solar masses (0.4%) - Abbott et al. 2016.
BSSN/Z4c numerical relativity Self-check
Gauge-wave self-convergence order 3.946 toward 4th order.
GR-MHD magnetized accretion Self-check
Divergence-free magnetized torus, |div B| to machine zero.
Schwarzschild quasinormal mode Verified
l=2, n=0 Leaver continued-fraction, err < 1e-11.
Hawking temperature precision Verified
0.27% across 60 orders of magnitude in black-hole mass.
Hartree-Fock H2 Verified
RHF/STO-3G -1.1175 Ha vs Szabo-Ostlund (< 0.5%).
DFT water molecule Verified
B3LYP/6-31G* within 0.312% of NIST CCCBDB.
Silicon lattice constant Verified
a0 = 5.4311 A vs Kittel 5.431 (+0.00%), Stillinger-Weber.
Heisenberg spin chain Verified
N=10 ground state -4.258, Lanczos + independent oracle.
Electron g-2 QED coefficients Verified
Orders 1-5 to the f64 floor, cascade closure.
Blasius boundary layer Verified
Wall shear f''(0) = 0.4696, independent shooting solve.
Taylor-Green vortex (WebGPU) Verified
Spectral NS, energy decay rate 4*nu, error 6.6e-7.
FDTD Maxwell solver Verified
Yee-grid, vacuum energy conservation < 1e-25.
GeoNum trust verdict Verified
How many digits survived, on every result.
Plasma physics and MHD
Tokamak/MHD stability; Taylor state to 2.87e-9, Troyon band.
Seismology and geophysics
PREM velocities, Okada faults, seismic moment.
Cosmology
Sound horizon, age of the universe, power spectrum.
pKa and logP
Hammett pKa 3.42, Hansch-Leo logP to 0.06 log units.
Computational fluid dynamics
Blasius, Taylor-Green (WebGPU), Sod shock tube.
Materials science
Lattice constants, elastic, phonons, Madelung.