Grok. Does Bitcoin Cash have replace by fee?

**No, #BitcoinCash (#BCH) does not support Replace-By-Fee (RBF).**

Bitcoin Cash deliberately removed RBF support during its 2017 hard fork from Bitcoin. This was part of prioritizing reliable zero-confirmation (0-conf) transactions for merchant and point-of-sale use cases, where the first-seen transaction is the one that nodes and miners generally accept and relay.

### Key Details on Bitcoin Cash's Policy
- **First-seen rule**: BCH nodes (such as Bitcoin Cash Node / Bitcoin ABC implementations) typically accept and relay only the first version of a transaction they see for a given set of inputs. They do not replace it with a conflicting higher-fee version.
- **No BIP 125 signaling**: The opt-in RBF mechanism (BIP 125) that Bitcoin uses was explicitly removed or disabled in BCH. Any signaling for replacement is ignored.
- **No full RBF**: Unlike Bitcoin (where full RBF is an optional node policy in recent versions), BCH does not allow arbitrary replacement of unconfirmed transactions, even without opt-in flags.

### Why Bitcoin Cash Avoids RBF
The design choice supports **instant, reliable payments** with low fees and large block capacity (no congestion like Bitcoin during high demand). Merchants can more confidently accept unconfirmed transactions without worrying about the sender "replacing" it via a higher-fee double-spend. This reduces the need for RBF "bumping" in the first place, as fees stay predictable and low.

In contrast, Bitcoin uses RBF (opt-in by default, with full RBF options) mainly to handle fee spikes and stuck transactions in its more congested mempool.

### Practical Implications for Users
- If your BCH transaction is stuck (rare due to scaling and low fees), you generally cannot RBF it. Instead, wait for confirmation or use other methods if supported by your wallet (though native replacement isn't available).
- Wallets and explorers for BCH treat transactions as final once broadcast under the first-seen rule, aiding point-of-sale and everyday use.

This has remained consistent since the fork, with no major reintroduction of RBF as of 2026. For the latest node behavior, check official BCH documentation or implementations like Bitcoin Cash Node. If you're building or using tools on BCH, the lack of RBF is a deliberate feature for its "electronic cash" focus.

https://grok.com/share/c2hhcmQtMi1jb3B5_f0deb48d-ea83-4676-83b7-9ec262ad6677

New Zealand - Nuclear Energy

To help preserve the legacy of New Zealand’s nuclear-free stance, one practical path could be to keep the current restrictions on conventional nuclear reactor technologies while opening the door to advanced designs like molten salt reactors (MSRs) once they’re commercially proven.

MSRs operate at atmospheric pressure (no explosive steam risk like older designs) and generate far less long-lived waste thanks to better fuel use and potential reprocessing.

It’s a way to honour New Zealand’s proud history—tied, however loosely, to Kiwi-born nuclear physics pioneer Ernest Rutherford—while exploring safer, cleaner options for a low-carbon future.

Interested in any thoughts 💭

For those seeking a reason, a steer on the Iran-US war, this may provide it.

Ayn Rand Institute Ben Bayer interviews Elan Journo about the US attack on Iran.

https://youtu.be/ZZV5I8YRYvI