The statement's core claims are strongly supported by a convergence of high-authority primary and secondary sources. 1. **Existence of the Fork:** The official Ethereum social media account confirms that a "Blob Parameters Only (BPO) fork" occurred. This is corroborated by multiple reputable news outlets like Blockworks, The Block, and RootData, which all describe a recent Ethereum hard fork.2. **Purpose of the Fork (Blob Parameters Only):** The name "Blob Parameters Only (BPO) fork," used by the official Ethereum account, explicitly states the narrow scope of the upgrade. Blockworks further clarifies that it was a lightweight fork designed specifically to "adjust blob parameters." Boba Network, an industry participant, provides the exact new parameters (14 target, 21 maximum), confirming this was the change deployed.3. **Finality of the Parameters:** A headline from The Block, a major crypto news outlet, directly refers to the event as Ethereum's "'final planned Blob Parameters Only fork,'" supporting the claim that it deployed the "final" parameters in this planned sequence.4. **The Name "Fusaka Upgrade":** The official Ethereum account situates the BPO fork within the "Fusaka upgrade cycle." While some sources suggest the name "Fusaka" might be informal "narrative inflation" (Nick Johnson) or that its details are unclear (Ainvest), its use by the official Ethereum entity and multiple news outlets (Blockworks, Business Insider) confirms it is the commonly accepted name for this upgrade or series of upgrades.In summary, the most authoritative sources confirm that a fork occurred, that its sole purpose was to adjust blob parameters, and that it was the final one planned. These events are collectively referred to as the Fusaka upgrade. The evidence is consistent and directly supports all parts of the statement.