The Silence of the Bear: When Adam Back’s ‘Approval’ Became a Beautiful Lie

The silence after the bear market taught me that not all approvals are born equal. Last week, a headline screamed: 'Cypherpunk Legend Adam Back Approves Ethereum's Post-Quantum Shift.' It was a beautiful lie—a truth wrapped in the wrong envelope. I’ve been in this space long enough to recognize the scent of hyperbolic media fuel. The noise was loud, but the silence that followed was louder. In the quiet of my Singapore apartment, I watched the discourse unfold: backers of Bitcoin squaring off against Ethereum maximalists, both sides missing the point. The real story wasn’t about approval—it was about the quiet, deliberate shift of a foundation’s cryptographic soul. Adam Back is not a man who hands out endorsements like candy. The co-inventor of Hashcash, the cypherpunk who laid the groundwork for Bitcoin’s proof-of-work, has spent decades building a reputation for skepticism. When a crypto news outlet claimed he 'approved' Ethereum’s post-quantum shift, the technical community held its breath. I recall my own days as a sophomore in 2017, writing a 20-page critique of ICO whitepapers as social contracts. Back then, I learned that the loudest voices are often the least reliable. This time, the noise was a headline—but the truth came later, in a quiet clarification from Back himself: he did not endorse Ethereum. He merely agreed that using time-tested hashes (Keccak, SHA-256) over custom ones like Poseidon was a reasonable technical decision. The media had twisted technical consensus into a stamp of approval. So why does this matter? Because Ethereum’s proposed transition to post-quantum cryptography is not a marketing gimmick—it’s a long-term architectural commitment. The core of this shift is the deprecation of Poseidon, a ZK-friendly hash function that powered many Ethereum-based rollups. Poseidon is efficient in zero-knowledge proofs, but its cryptographic analysis is young. The quantum threat—though distant—looms over any custom primitive. Ethereum’s move to embrace Keccak or SHA-256 is a return to the conservative roots of cryptography: value the proven over the novel. My code was the covenant, not just the contract. The covenant here is a promise to prioritize security over efficiency, to build a foundation that can withstand decades of computational evolution. I’ve been on both sides of this trade-off. During the DeFi Summer of 2020, I audited Uniswap V2’s codebase, not for bugs, but to understand the philosophy of fair-launch. I learned that the most elegant code can collapse under the weight of untested assumptions. Poseidon’s risk is not an immediate bug—it’s a long-term unknown. The Ethereum core developers are not reacting to a crisis; they are positioning for a future where quantum computers might break the fragile assumptions of custom hashes. This is not a breakthrough—it’s a defensive upgrade. It’s the difference between building a house that looks good and one that stands during a hurricane. But here’s the contrarian angle: this shift is overhyped in its market impact and underappreciated in its philosophical weight. The market saw the headline and yawned—ETH barely moved. The real impact is on the ZK-rollup ecosystem. Projects like zkSync, Scroll, and Polygon zkEVM have built their proof systems around Poseidon’s efficiency. If Ethereum’s base layer abandons it, these rollups face a choice: continue using a custom hash that diverges from the base layer, or migrate to a less efficient but more secure standard. That migration will cost time, gas, and trust. I’ve seen this before—in 2022, when the bear market mirrored the collapse of overleveraged protocols. Every broken token taught me how to hold value. The ones that survive are those that adapt their foundations without losing their soul. The media narrative—'Adam Back approves Ethereum'—is a distraction. The real story is the quiet tension between two competing visions of crypto: the cypherpunk ideal of absolute, immutable security (Bitcoin’s SHA-256) and the pragmatic, evolvable approach of Ethereum. The cypherpunk legend may not endorse Ethereum, but his technical approval of the post-quantum move is a nod to the shared values of the early Bitcoiners: code that is honest, proven, and resistant to coercion. In the silence of the bear, we heard the truth. The truth is that Ethereum’s shift is not a victory lap—it’s a humble admission that the future is uncertain, and the only way to prepare is to build with the hardest, most time-tested materials. What does this mean for the average holder? Little, in the short term. No immediate price action, no air drops. But for the long-term builder, it’s a signal: Ethereum is maturing. The days of 'move fast and break things' are giving way to 'move deliberately and secure things.' This is what I’ve been building my community around—The Commons, a sanctuary for ethical Web3 builders. We don’t chase hype; we chase the infrastructure that will survive the next decade. The post-quantum shift is exactly that: a boring, essential upgrade that will be invisible to users but critical to the network’s destiny. I’ll leave you with this: the next time you see a headline that screams 'X approves Y,' ask yourself—who is speaking, and what is the silence they leave behind? The bear market taught me to listen to the silence. It’s where the truth lives. It’s where the code is written, not as a contract, but as a covenant. And it’s where we build the future, one cautious hash at a time.