Technology Behind POST Token
POST Token is built on the Cosmos SDK, a modular framework for building application-specific blockchains. Our technical architecture is designed specifically for the global postal ecosystem's unique requirements.
Why Cosmos SDK?
After careful analysis of the postal ecosystem's requirements, we chose Cosmos SDK as our foundation. Here's how it compares to other blockchain platforms:
Application-Specific Chain
Custom modules for postal operations without smart contract limitations
Tendermint BFT Consensus
Instant finality crucial for payment settlement
IBC Protocol
Native interoperability with other Cosmos chains and bridges
Governance Module
Built-in on-chain governance for bicameral structure
Bank Module
Native multi-token support for POST and PSDR
Modular Design
Add postal-specific modules (PoT, PoD, Gateway)
Technical Specifications
Key Highlights
- Custom PoT/PoD consensus for postal operations
- Sovereign governance for postal operators
- IBC for cross-chain interoperability
- Proven at scale (Terra, Osmosis, Crypto.com)
- 5-second block time with instant finality
- 192 validators (one per country)
Blockchain Architecture
POST Token employs a layered architecture optimized for postal operations:
Application Layer
User-facing applications including Postal App, Money Transfer, Merchant Payment, and Wallet Apps
API Layer
REST API, gRPC, WebSocket Events, and GraphQL interfaces for all integrations
Smart Contract Layer
CosmWasm contracts for Settlement, Escrow, Payment, and Dispute resolution
Custom Modules Layer
Gateway, DEX, PoT, PoD, Mining, and Settlement modules
Cosmos SDK Core
Bank, Staking, Gov, IBC, and Auth modules from Cosmos SDK
Consensus Layer
Tendermint BFT consensus with 192 validators producing blocks
Smart Contracts (CosmWasm)
POST Token uses CosmWasm for WebAssembly-based smart contracts, providing security, efficiency, and interoperability:
Settlement Contract
Handles inter-operator settlements and terminal dues automation
Key Functions:
Escrow Contract
Secure fund holding for pending transactions and disputes
Key Functions:
Payment Contract
Merchant and user payment processing
Key Functions:
Dispute Contract
Handles dispute resolution between parties
Key Functions:
Custom POST Modules
Beyond Cosmos SDK's core modules, POST Token includes custom modules designed specifically for postal operations:
Consensus Mechanisms
Proof of Transit (PoT)
Every postal scan (collection, sorting, dispatch) generates blockchain-verified proof, creating immutable transit records.
- Real-time package tracking on-chain
- Automatic operator reward distribution
- Tamper-proof transit history
- Dispute resolution evidence
Proof of Delivery (PoD)
Final delivery confirmation triggers settlement and reward distribution, ensuring payment only upon successful delivery.
- Delivery confirmation on-chain
- Automatic PSDR settlement trigger
- Recipient signature verification
- Photo/GPS proof storage
Ready to Explore Further?
Dive deeper into our technical documentation and whitepaper.