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 1110 live receipt samples. Tools quoting the oracle are invisibly wrong about Mantle DA cost.
DA cost / calldata byte
892.1787 gwei
median · 41 samples / 24h
L2 base fee
50 gwei
median of recent blocks
Calibration error
45.12% mean
255 samples · mantle-da-v1-2026-06
What a typical transaction costs on Mantle today
ERC-20 transfer
0.002610668 MNT
L2 exec 0.00255 · DA 0.000060668 (2.32%) · ~68 calldata bytes · estimate
DEX swap
0.009231966 MNT
L2 exec 0.009 · DA 0.000231966 (2.51%) · ~260 calldata bytes · estimate
Contract deploy
0.065353072 MNT
L2 exec 0.06 · DA 0.005353072 (8.19%) · ~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
- 24h892.1787 gwei · 41 samples
- 30d802.3248 gwei · 1110 samples
- 7d863.232 gwei · 255 samples
Recent samples
updated| Tx | Time | Bytes | DA (receipt) | Oracle |
|---|---|---|---|---|
| 0xa9725329… | 708 | 0.000183686 | 4.05e-8 | |
| 0xf0b57b22… | 1188 | 0.000495481 | 1.09e-7 | |
| 0xdd533db6… | 228 | 0.000148788 | 2.71e-8 | |
| 0x1f32e402… | 228 | 0.000378511 | 6.95e-8 | |
| 0xed6a0b37… | 260 | 0.001512124 | 3.00e-7 | |
| 0xd4388fdb… | 100 | 0.000907968 | 2.31e-7 | |
| 0xadd5c570… | 100 | 0.000907968 | 2.31e-7 | |
| 0xb9d842ec… | 996 | 0.001338096 | 2.61e-7 |
Model mantle-da-v1-2026-06 · recalibrated 2026-07-08 21:31 UTC. All figures are decision-support, not guarantees; DA values are receipt-measured, costs marked estimates. Snapshot JSON: /api/observatory.