The distinction that everything rests on
Postern & Bloch-SIS-PoW are two different things.
One is a company that owns products. The other is an ownerless piece of public infrastructure that nobody owns — including us. Confusing them would be convenient for marketing and corrosive for honesty, so this page exists to make the line unmistakable.
Side by side
Postern Labs
- Owns its products — vault, courier, messenger, wallet, OS, apps — all rebranded away from “Bloch”.
- Has a website — this one.
- Sells protection and support — the BlackBerry model: signed builds, update channels, org deployments, training. Never a coin.
- Permissively licensed — MIT / Apache-2.0, no copyleft embedded.
- Accountable — its claims are its own, and each is audit-gated.
Bloch-SIS-PoW
- No owner. No foundation. No curator. Not Postern Labs, not the author of the code.
- No official website, no official explorer, no token sale. If you find a site claiming to be “the official Bloch site”, it isn't.
- Software + a documented RPC/API surface, and nothing more. Chain state, blocks, mempool, addresses, submit-tx, attestation.
- Anyone runs it; anyone builds on it. An explorer on Bloch is like mempool.space on Bitcoin — an independent product, not “Bloch's explorer”.
- Lives in its own repository:
gitlab.com/blochsispow-group/BlochSISPoW-project.
The relationship, precisely
Postern Labs is one builder among many on a neutral base. Its products consume the protocol the same way anyone else's would — through the public RPC/API, with no privileged access, no admin keys, no special role in consensus. Think of Bitcoin and the wallets, explorers, and companies built around it: the protocol is public infrastructure; the tools built on it have owners.
Postern is not the steward of the protocol. If a community forms to steward Bloch-SIS-PoW, good — but it will not be steered by Postern Labs, and not by the author. The protocol repository stays free of product and site material; the products live here, as independent projects.
Not everything Postern makes even touches the chain. The OS, the vault, the hygiene scrubber, and the messenger are independent of it; only the wallet and chain-facing tools consume the RPC/API.
Privacy/security on permissive Linux — parameterizable, attestable, sold. Wallet and explorer-class tools talk to the chain; the OS and most of the suite don't need it at all.
SHAKE-256 hashcash PoW (Module-SIS gate) · Falcon‖ML-DSA · GhostDAG-Q · Coherence · the coin. No owner. No curator. No official site or explorer. Just the protocol.
Why the hard separation
Because a gatekeeper is a promoter-shaped entity. A protocol with an owner who grants privileges, runs the official site, and shapes the market is exactly what the “not a security” posture cannot survive. So the protocol has no owner — and Postern's name contains no “Bloch”, and Postern's revenue story never touches the token in any sentence.
And because the users who need this most deserve the truth. Postern's products earn their keep as security and privacy products — you use them for the protection, not to mine or hold a token.
Repeated here on purpose
The same honest status applies on this page.
Mainnet beta, unaudited, not a security
The protocol now runs a mainnet beta — a designation, not a security claim. The relaxed regime (k=4) currently applies — work is trivially forgeable. The k=8 security hardening of the Module-SIS gate was activated at block 213,000 but reverted: it multiplied mining difficulty ~4096x and the current solo / low hashrate could not find blocks, so the chain stalled. k=8 will re-activate together with a matched difficulty reduction (so block time stays ~30s); until then, no security is claimed. Security is cumulative SHAKE-256 hashcash work (the gate is a structural filter); the network is nascent, low-hashrate, and 51%-attackable; and the software is unaudited — the third-party audit is contracted but not done, and the concrete-security analysis and IACR ePrint are still outstanding.
The coin is not a security and not an asset. There is no token sale, no listing effort, and no price. The one fact a skeptic should weigh against “ownerless” is disclosed in full and kept visible on purpose: a 17% founder premine (10-year cliff, 40-year vest), structurally passive. Do not attach value to the coin.