posternlabs
Whitepaper
Postern Labs / holding company of the group
Postern Labs Ltda is the holding company and treasury of the group. It holds 100% of Bloch Inc, which operates the Bloch services, and 37 billion Bloch Protocol Tokens (BLCH).
The group
One holding. One subsidiary. One protocol.
Postern Labs Ltda, Brazil, is the holding company and treasury of the group. It holds 100% of the share capital of Bloch Inc and is in the process of transforming into Postern Labs S.A.
Bloch Inc is incorporated in Panama and operates the DEX, Bridge, L2, Explorer and other Bloch services. Bloch Protocol is the native Layer 1 network beneath them, and BLCH is its token.
Who is who
A company that holds, a company that operates, and the network they are built around.
Holding company / BrazilPostern Labs Ltda is the holding company and treasury of the group. It holds 100% of Bloch Inc and 37 billion BLCH, and is in the process of transforming into Postern Labs S.A.
Wholly owned subsidiary / PanamaBloch Inc is incorporated in Panama and wholly owned by Postern Labs. It operates the DEX, Bridge, L2, Explorer and other Bloch services.
Bloch Protocol is a proof-of-stake Layer 1 network with hybrid lattice signatures at its authorization layer. BLCH, the Bloch Protocol Token, is its native token.
Postern Labs
The holding company of the group.
Postern Labs Ltda is incorporated in Brazil. As the holding company, it owns 100% of the share capital of Bloch Inc. As the group treasury, it holds 37 billion Bloch Protocol Tokens (BLCH).
Postern Labs Ltda is in the process of transforming into Postern Labs S.A. Until that transformation is complete, Postern Labs Ltda remains the legal entity of record.
Corporate structure
Postern Labs Ltda, the holding company and treasury, holds 100% of the share capital of Bloch Inc. Bloch Inc is incorporated in Panama and operates the DEX, Bridge, L2, Explorer and other services. The parent company's transformation into Postern Labs S.A. is in progress.
Postern Labs Ltda
Transforming into Postern Labs S.A.
Bloch Inc
Operates the Bloch services
Holding company and treasury of the group, with 37 billion BLCH. In the process of transforming into Postern Labs S.A.
Incorporated in Panama. Operates the DEX, Bridge, L2, Explorer and other Bloch services.
Group treasury
As the group's holding company and treasury, Postern Labs Ltda, Brazil, holds 37 billion Bloch Protocol Tokens (BLCH). The company is in the process of transforming into Postern Labs S.A.
Wholly owned subsidiary of Postern Labs
03 / Bloch Inc
Bloch Inc is incorporated in Panama and wholly owned by Postern Labs Ltda. It operates the DEX, Bridge, L2, Explorer and other Bloch services, and leads the product roadmap, protocol infrastructure and research coordination of the group.
04 / Bloch Protocol
Bloch Protocol is a proof-of-stake Layer 1 network with hybrid lattice signatures at its authorization layer. BLCH, the Bloch Protocol Token, is its native token.
Genesis-4 · proof of stake
Both signatures must verify
Configured protocol parameters
BLCH · protocol maximum
Institutional Dossier 2.0 / Whitepaper Historical edition · 13 August 2026. See the software update below for the current node release.
Genesis-3 ended at height 39,918. Genesis-4 carried balances forward automatically. No claim, token swap or migration payment is required.
Read the migration recordThe published record describes an unaudited network launched under one operator. New validator admission requires verified release and network configuration.
Inside the protocolAllocation, emission, concentration, and the difference between a designed vesting schedule and an enforced lock.
Explore supply05 / Software + network updates
The signed Genesis-4 node release improves validator safety, network reliability and finality verification. Released node features and future network upgrades are shown separately below.
Released 21 October 2026 / Linux x86-64 / 1708953d
Durable signing history, host-level signer locking and a strict signer anchor protect validator operation across restarts and restored data. Duplicate-validator detection checks for unexpected signatures from the same identity.
Signing records are saved before signatures are released. A host-level lock prevents a second local signer from using the same identity.
Improved attestation retries and stricter node-local ML-DSA relay verification strengthen day-to-day node operation.
The finality-certificate RPC exposes proof data for independent verification against a trusted earlier checkpoint.
All 61 managed fleet validators were upgraded and verified on 22 October 2026. This release schedules no new hard fork; new consensus activation gates remain disabled.
For existing Genesis-4 nodes. Verify the signed checksum before installation and preserve validator identity, signing history and signer anchor.
These consensus changes remain disabled in the released binary. Activation requires a separately qualified and announced network upgrade.
06 / Products of the group
Operated by Bloch Inc on Bloch Protocol. Operating services and software previews are shown at their actual stage. A proposal is not a launch.
Operating / qualify release
The native Layer 1: Genesis-4 proof of stake with ML-DSA-65 + Falcon-1024 at the authorization boundary.
Explore the protocol ↗Operating
The dedicated BLCH explorer: blocks, transactions, eUTXO graphs, validators, finality and indexed holder distributions.
Open blochl1.com ↗Public-chain analytics
Source-backed graph exploration, observed balances and structural analytics for BLCH on Genesis-4.
Open Graphus ↗Published access + roadmap
Genesis-4 RPC access, validator onboarding, wallet integration guides and PQ Shield reference work.
Open Bloch Ops ↗Public beta
Native Bloch signing, optional registered-device protection, phone authorization and a Chrome extension.
Open the wallet ↗Deployment unverified
Compare candidate routes, costs and trust assumptions before coordinating a sequence of approvals.
Decision support / product mandateDevelopment preview
ERC-20 swaps and liquidity pools on Ethereum, Base and Arbitrum, with a separate zero-value testnet. Interfaces remain development software.
Explore Bloch DEX ↗Integration in progress
Build Solidity applications in the ECDSA-based L2 domain with an implemented EVM core, toward settlement on Bloch L1.
Explore Bloch L2 ↗Qualification in progress
Move between supported domains through explicit custody, identity, backing and finality verification gates. Public deposits and withdrawals are not enabled.
Explore Bloch Bridge ↗Installable / local
Build Solidity applications with Foundry and a persistent local EVM. Bloch settlement remains in development.
Get EVM developer tools ↗Installable / local
Build Rust programs with an Agave local validator and a persistent ledger. Native Bloch SVM execution is not enabled.
Get Solana developer tools ↗Community
Installation guides, starter projects and contribution paths for the Bloch developer community.
Join the development effort ↗Offline CLI
Evidence comparison for exchanges, custodians, validators and risk teams. Authenticated operator identity and production finality proofs remain future gates.
Checkpoint comparisonPlanned
Versioned APIs, idempotent webhooks and a reproducible developer sandbox on the live historical index.
Explore Bloch Data ↗Design only
Policy wallet, approvals, invoices, reconciliation and finality receipts for organizations.
Explore Bloch Pay ↗Proposed platform
Market infrastructure for eligible digital assets around the Ustav programmable token.
Explore Bloch Markets ↗A complete public L2 node, Bloch L1 settlement and public bridge asset transfers are not enabled. DEX interfaces remain development software. Product status should be verified before use.
07 / Leadership + strategic stakeholders
Leadership and strategic guidance for Postern Labs and the Bloch ecosystem.
President (Co-founder and Major Stakeholder of BLCH)
CEO (Investor, Co-founder and Major Stakeholder of BLCH)
Strategic Advisor
Advisor
XP Inc. Co-Founder & Former CFO · InvestorLegal Director
Major BLCH Stakeholder & InvestorPostern Labs / holding company of the group