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 2523 live receipt samples. Tools quoting the oracle are invisibly wrong about Mantle DA cost.
DA cost / calldata byte
4,118.9861 gwei
median · 12 samples / 24h
L2 base fee
50 gwei
median of recent blocks
Calibration error
258.79% mean
146 samples · mantle-da-v1-2026-06
What a typical transaction costs on Mantle today
ERC-20 transfer
0.002830091 MNT
L2 exec 0.00255 · DA 0.000280091 (9.89%) · ~68 calldata bytes · estimate
DEX swap
0.010070936 MNT
L2 exec 0.009 · DA 0.001070936 (10.63%) · ~260 calldata bytes · estimate
Contract deploy
0.084713917 MNT
L2 exec 0.06 · DA 0.024713917 (29.17%) · ~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
- 24h4,118.9861 gwei · 12 samples
- 30d812.601 gwei · 732 samples
- 7d1,155.0034 gwei · 146 samples
Recent samples
updated| Tx | Time | Bytes | DA (receipt) | Oracle |
|---|---|---|---|---|
| 0x06ab50e8… | 388 | 0.000183973 | 2.99e-8 | |
| 0x7b141e09… | 36 | 0.000104043 | 2.06e-8 | |
| 0x0eb0f5fe… | 132 | 0.000134805 | 2.48e-8 | |
| 0xd096ad52… | 68 | 0.000247006 | 4.59e-8 | |
| 0x68caf814… | 260 | 0.000277508 | 4.40e-8 | |
| 0xd2b61e3a… | 36 | 0.000165799 | 3.39e-8 | |
| 0xbcc5b547… | 9 | 0.000165799 | 3.39e-8 | |
| 0xc7efd40c… | 9 | 0.000165799 | 3.39e-8 |
Model mantle-da-v1-2026-06 · recalibrated 2026-08-23 04:01 UTC. All figures are decision-support, not guarantees; DA values are receipt-measured, costs marked estimates. Snapshot JSON: /api/observatory.