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Updated 2026-10-31 Verified at block 25,160,960 2 min read

A public settlement ledger where your post-quantum migration can be shown rather than promised: post-quantum evidence under the block hash, checkable by your own team and ready for a regulator.

Every signature that secures a public blockchain today rests on elliptic-curve cryptography, and its retirement is already on a regulator's calendar. NIST deprecates the classical 112-bit schemes after 2030 and disallows them after 2035 (IR 8547); the US federal migration mandate (OMB M-23-02) and the EU's coordinated roadmap run on the same clock. For a bank, a central securities depository, or a payment institution, the question is no longer whether to migrate a settlement system to post-quantum cryptography, but how to show a supervisor, an auditor, and a board that the work is real.

What you can show them

Chain 2800 is a public settlement ledger where that evidence already exists and can be checked. Since block 13,014,000, every anchor block binds a certificate of Falcon-512 validator signatures under the block hash itself, at an enforced minimum of seven per anchor block, as many as the 2f+1 quorum of the ten validators, since block 20,715,632 (2026-09-29; below block 24,148,752 the seals proved those validators signed the block, not that it was decided, per the AIP-22 erratum of 2026-10-01, and from that block a certificate that carries the quorum of one round proves the decision; three from 2026-08-14, six from block 14,961,456 on August 21, 2026). Five post-quantum precompiles run natively: four signature verifiers (Falcon-512, Falcon-1024, ML-DSA-44, SLH-DSA-128s) and the SHAKE256 hash function (corrected 2026-10-27: this sentence called all five NIST post-quantum verifiers). Since 2026-08-14, consensus does not finalize an anchor block (every 32nd) without at least three of the then nine valid post-quantum validator seals (raised at block 14,961,456, August 21, 2026, to six seals, then as many as the QBFT quorum of nine; from 2026-09-11 the set was ten and six sat above f+1 but below its quorum of seven, until block 20,715,632, on 2026-09-29, raised the enforced minimum to seven, as many as the quorum of the ten validators) (corrected 2026-08-19: not every block). None of this is a slide: it is a set of blocks your own team verifies against a public endpoint.

The engagement starts with verification, not slides

Your crypto-agility team downloads a single-file verifier, runs one command, and watches it recompute the binding digest independently from raw bytes. Then it fails on purpose, on pre-enforcement history and on a tampered domain, so you know the check can say no. Only after your team has seen the proof with its own eyes do we map your settlement flows onto post-quantum authorization together. The chain runs Ethereum's Prague and Osaka EVM rules (one exception: the EIP-4788 beacon-roots contract has no code), so your existing tooling and wallets carry over.

Three ways to work with us

Post-quantum migration testbed. Timed access for your team to exercise Falcon, ML-DSA, and SLH-DSA on a live public chain, with a reproducible conformance report for your regulator; see a sample report, generated by the same toolkit you can run yourself. A private post-quantum ledger. The same QBFT-plus-post-quantum stack, deployed for you, with two independently built clients. A quantum-safe tokenization pilot. Your asset, tokenized, with post-quantum evidence in the block record, not only at the application layer.

Honest boundaries, stated up front

Since 2026-08-14 every 32nd block (every 128th from block 17,225,968 to block 20,746,736, 2026-09-05 to 2026-09-29) on chain 2800 (an anchor block) does not finalize without a certificate of at least three valid Falcon-512 validator seals (f+1 of the nine validators of that time) (raised at block 14,961,456, August 21, 2026, to six seals, then as many as the QBFT quorum of nine; from 2026-09-11 the set was ten and six sat above f+1 but below its quorum of seven, until block 20,715,632, on 2026-09-29, raised the enforced minimum to seven, as many as the quorum of the ten validators) bound under its block hash; QBFT finalizes every block, whose votes every validator attributes, since block 24,300,000 (AIP-22 stage 4), only through their verified post-quantum seals (since block 25,080,000, AIP-22 stage 5, headers no longer carry ECDSA commit seals and are admitted on the Falcon-512 seal of their proposer alone; a commit still carries the ECDSA commit seal of its validator as an additional check). (Correction 2026-08-19: the earlier statement that from block 14,050,000 every block required a six-of-nine post-quantum quorum to finalize is withdrawn; the per-block rule armed at that height is retired in the shipped code in favour of the anchor rules and changed no enforcement.) All ten validators are Foundation-operated while the independent-operator program is built, so the chain is not yet decentralized and we do not describe it that way. No external security audit has been completed; the first one is planned after the remaining consensus stages of AIP-22, no firm is engaged and no date is set (see /audits.html; corrected 2026-10-27: this sentence said an audit is on the roadmap with a date). Each of these is a real limitation, published, and each is a step we are taking in the open. We would rather you learn them from us than from a hostile reader.

Have your team check us first

curl -O https://aere.network/tools/verify-anchor.mjs -O https://aere.network/tools/mpt.mjs -O https://aere.network/tools/falcon512.mjs -O https://aere.network/tools/registry-v3.mjs -O https://aere.network/tools/package.json && npm install
node verify-anchor.mjs
# VERIFIED: 20/20 anchor blocks carry a post-quantum certificate
# bound under the block hash, every seal a valid falcon-512 or slh-dsa-sha2-128s signature
# (it also checks the minimum per scheme: 7, as many as the quorum, since block 20,715,632).

# The full toolkit: precompiles vs NIST vectors, block interval,
# validator set, contract fingerprints. Zero dependencies. Run the
# self-test first: it plants 21 defects and must catch every one.
curl -O https://aere.network/tools/verifica-lantul.tar.gz
tar -xzf verifica-lantul.tar.gz && cd verifica-lantul
node autotest.mjs   # prove the toolkit can say NO
node verifica.mjs   # then a green run means something
Write to us: [email protected]

Subject line "Post-quantum migration testbed" reaches the right person directly. Or start with the Foundation.

The stackSix layers, live vs armedWhat is delivered, what is armed, and the number behind each. The pitchQuantum-safe settlementWhy a settlement ledger needs post-quantum evidence, and what ours carries. The proofRun the verifierRecompute the binding digest yourself, from raw bytes, in a minute.
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