Mantle Gas Observatory · receipt-calibrated
Mantle's data-availability economics, from receipts.
Every number here is derived from real Mantle transaction receipts (l1Fee), not the legacy oracle. Sample sizes are always shown. Methodology →
Legacy oracle divergence
99.97%
The legacy GasPriceOracle.getL1Fee under-reports the DA fee Mantle actually charges by this much — measured across 158 live receipt samples. Tools quoting the oracle are invisibly wrong about Mantle DA cost.
DA cost / calldata byte
1,473.8059 gwei
median · 43 samples / 24h
L2 base fee
50 gwei
median of recent blocks
Calibration error
273.65% mean
158 samples · mantle-da-v1-2026-06
What a typical transaction costs on Mantle today
ERC-20 transfer
0.002650219 MNT
L2 exec 0.00255 · DA 0.000100219 (3.78%) · ~68 calldata bytes · estimate
DEX swap
0.00938319 MNT
L2 exec 0.009 · DA 0.00038319 (4.08%) · ~260 calldata bytes · estimate
Contract deploy
0.068842835 MNT
L2 exec 0.06 · DA 0.008842835 (12.84%) · ~6000 calldata bytes · estimate
Oracle prediction vs charged receipt fee
Embeddable chartDA fee / byte (gwei) — receipt (charged) vs legacy oracle
Receipt (green) = charged l1Fee per byte; oracle (amber) = legacy getL1Fee prediction for the same payload. Embed: <iframe src="https://archonaudit.xyz/embed/observatory/oracle">
DA cost / byte trend
- 24h1,473.8059 gwei · 43 samples
- 30d688.8633 gwei · 158 samples
- 7d688.8633 gwei · 158 samples
Recent samples
updated| Tx | Time | Bytes | DA (receipt) | Oracle |
|---|---|---|---|---|
| 0x03956985… | 132 | 0.000046616 | 1.69e-8 | |
| 0xaf2bb5aa… | 996 | 0.000276148 | 7.69e-8 | |
| 0xd55e0184… | 68 | 0.000129613 | 3.90e-8 | |
| 0xb3d860e0… | 4932 | 0.000780454 | 2.42e-7 | |
| 0x5c3d63bb… | 10 | 0.000194542 | 6.13e-8 | |
| 0x4b70ed4b… | 132 | 0.000194542 | 6.13e-8 | |
| 0xbc5fb6e7… | 484 | 0.000687965 | 1.82e-7 | |
| 0x2c1a2c85… | 420 | 0.004331389 | 0.000001244 |
Model mantle-da-v1-2026-06 · recalibrated 2026-06-16 00:33 UTC. All figures are decision-support, not guarantees; DA values are receipt-measured, costs marked estimates. Snapshot JSON: /api/observatory.