See the README in each folder for instructions on how to run a replica node
Manta Pacific hard forks — action required for replica operators
https://github.com/ConstellationCrypto/replica-guide-manta-mainnet/pull/6
We are activating Fjord, Granite, Holocene, and Isthmus on Wednesday, 16 September 2026. All four forks land the same day, two hours apart. Replicas that are not updated before Fjord will fall out of consensus.
| Fork | Unix time | UTC |
|---|---|---|
| Fjord | 1789560000 |
2026-09-16 12:00:00 |
| Granite | 1789567200 |
2026-09-16 14:00:00 |
| Holocene | 1789574400 |
2026-09-16 16:00:00 |
| Isthmus | 1789581600 |
2026-09-16 18:00:00 |
Please apply this before 12:00 UTC on 16 September 2026 and restart your node.
1. op-node — add these environment variables (keep existing Canyon / Delta / Ecotone / Pectra blob overrides):
OP_NODE_OVERRIDE_FJORD=1789560000
OP_NODE_OVERRIDE_GRANITE=1789567200
OP_NODE_OVERRIDE_HOLOCENE=1789574400
OP_NODE_OVERRIDE_ISTHMUS=1789581600
2. genesis.json (execution client chain config) — add:
"fjordTime": 1789560000,
"graniteTime": 1789567200,
"holoceneTime": 1789574400,
"isthmusTime": 1789581600
3. op-geth (if you still run it) — add:
GETH_OVERRIDE_FJORD=1789560000
GETH_OVERRIDE_GRANITE=1789567200
GETH_OVERRIDE_HOLOCENE=1789574400
GETH_OVERRIDE_ISTHMUS=1789581600
op-geth is being deprecated. Please migrate to op-reth. These Geth overrides are only for operators who have not switched yet.
If you run from the replica guide compose file (op-reth), pull the latest docker-compose.yml and genesis.json, then restart:
docker compose up -d
If you do not update in time, your replica will not follow the sequencer through these forks.
We will be migrating batch prefixes from the forked op-stack Celestia implementation to the native ALT DA op-stack approach.