Ethereum (ETH) Defends $1,800 Support After Weekly Drop

Ethereum News

Ethereum (ETH), tracked across the Ethereum market, spent the week ending Friday, August 14, defending the $1,800 support area and closing the period with a minor 2% decline. The price structure shows sellers improving their position, but they have not yet forced a decisive break below that floor. Our reading of the weekly chart is that the market remains at an inflection point: as long as $1,800 holds, the decline can still be treated as a consolidation inside a broader bear market phase rather than a fresh capitulation. The more bearish signal comes from the failed attempt to establish $2,000 as support. ETH printed a lower high just below that level, then failed to convert the round number into a base. That rejection handed momentum back to sellers and set up another probe of the lower boundary. If $1,800 is tested and holds, traders will likely watch whether buyers can finally reclaim intermediate resistance; if it fails, the technical path opens toward $1,500. That lower zone is significant because buyers previously returned there in early July, making it the next historical demand pocket on the chart. The current setup therefore presents two clear scenarios. In the first, Ethereum stabilizes near $1,800, repairs the lower-high structure, and keeps the $1,500 area untested. In the second, sellers push through the floor, confirm the breakdown, and force the market to reprice toward the July demand zone. For positioning, the key is not to anticipate either outcome too early; the weekly close still shows ETH hugging the first major support, while the failed $2,000 reclaim remains the warning sign that bears retain the short-term initiative. Across the altcoin sector, Ethereum’s next move is likely to shape risk appetite. That means the next daily closes carry elevated weight for short-term trend confirmation in the coming sessions.

Ethereum’s cryptographic roadmap also changed this week after the Ethereum Foundation signaled it will step away from Poseidon as its preferred base-layer hash function and evaluate established alternatives such as SHA and BLAKE. The update, described by Ethereum Foundation researcher Justin Drake on August 13, closes an eight-year research track that began when the Foundation started funding SNARK-friendly hashing in 2018. Poseidon became the dominant option after emerging in 2019, but newer proof designs have weakened the assumption that SNARK systems need a bespoke hash. Drake’s explanation is that standard functions like SHA2 and BLAKE2s can now match Poseidon inside SNARK proofs, shifting the focus from specially built hashes to proof systems that handle ordinary hashes efficiently. The technical catalyst is a move toward proof systems built over binary fields, which align with the bit-level operations used by conventional hashing; earlier prime-field systems made those operations costly. Drake credited the 2023 Binius work by Benjamin Diamond and Jim Posen, along with newer Flock research, for proving roughly 1 million traditional hash calls per second on a laptop, a rate he framed as only about 100 times slower than native CPU computation. The security argument is equally important: plain, widely reviewed hashes minimize assumptions and give Ethereum a more conservative base for the quantum era, while experimental lattice and isogeny structures have faced recent cryptographic pressure. Drake specifically cited difficulties hitting lattice-based HAWK and isogeny-based SQIsign, both NIST Round 3 signature schemes. In practical terms, the pivot reduces the need to wait years for Poseidon’s long-term cryptanalysis before deployment. The published strawmap targets a production-grade leanVM in 2027, with consensus, data, and execution layer deployments penciled for 2028. Existing projects are not forced to migrate, and Poseidon is not rendered obsolete; this is a proposed change to Ethereum’s future Layer 1 design, not an immediate network mandate. The leanVM concept can be compared with the AltVM category of alternative execution environments.

COINOTAG’s analysis ties the $1,800 price fight and the Poseidon pivot to one arc: Ethereum is separating short-term market risk from long-term protocol durability. The Foundation’s official August 13 research disclosure is the reference document: it replaces Poseidon with SHA2 or BLAKE2s for future base-layer proofs, targets a leanVM in 2027, and points to consensus, data, and execution deployments in 2028. No hard-fork activation block is specified, and node operators face no forced migration today or in the near term. The security choice also echoes broader transaction-safety concerns seen in the Blind Signing debates: conservative primitives first.