← Back to Home
📖 Codex
Mainnet Wallet
Centronium Codex v2.0 — Protocol Documentation Suite
Proof of Useful Work API (PoUW API)

The First API-Mined
Blockchain Protocol

Miners validate blocks by executing real AI inference tasks through commercial API services — producing useful compute with every block instead of solving pointless cryptographic puzzles.

100M
CENTRO / Era
38
Block Reward
Ed25519
Signatures
3/4
Quorum
Documentation Suite
Download the Codex
Three documents. One complete picture of the first API-mined blockchain.
📄
Protocol Whitepaper
Full technical deep-dive. PoUW API consensus mechanism, historical lineage from Dwork & Naor through Bitcoin to Centronium, Forever Coin tokenomics, security model, and ecosystem architecture.
14 sections · ~18 pages · PDF · v2.0
Download Whitepaper
⚡
Litepaper
Condensed 2-page overview. Everything you need to understand Centronium and PoUW API in under 5 minutes. Built for sharing.
Key highlights · 2 pages · PDF
Download Litepaper
🎯
Pitch Deck
8-slide visual story. Problem, solution, architecture, tokenomics, ecosystem. Dark theme. Built to impress investors and partners.
8 slides · Landscape · PDF
Download Pitch Deck
Historical Context
The Evolution of Consensus
Four generations of blockchain consensus. Each solving the limitations of the last.
PoW
1993 / 2009
Proof of Work
Dwork & Naor (1993) proposed computational pricing. Nakamoto adapted it for Bitcoin (2009). Miners solve SHA-256 puzzles. Secure but wastes energy, requires expensive ASICs, produces nothing useful.
PoS
2012 / 2022
Proof of Stake
Validators selected by token ownership instead of computation. Ethereum completed transition in 2022. Eliminates energy waste but produces no external value. Favors wealthy token holders.
PoUW
2013–2025
Proof of Useful Work
Primecoin (2013), Gridcoin, CoinAI, DLchain. Mining directed toward prime number searches, scientific computing, and ML training. Useful output — but still required miners to own hardware.
API
2026
Proof of Useful Work API — Centronium
The first blockchain to abstract mining entirely from hardware to API credential access. Miners connect AI API keys, execute real inference tasks, and produce commercially valuable AI compute with every block. Zero hardware. Zero energy waste. Productive consensus.
External Documentation
As Documented on Grokipedia
Centronium's protocol and consensus mechanism are independently documented in Grokipedia, xAI's AI-generated encyclopedia.
Centronium
"Centronium is a blockchain protocol that implements a Proof of Useful Work (PoUW) consensus mechanism powered by artificial intelligence inference, where miners perform real AI inference tasks using API keys from AI service providers rather than solving cryptographic puzzles."
Read on Grokipedia →
Proof of Useful Work API
"The first live implementation of this API-based approach appeared in the Centronium blockchain, launched in 2026, which integrates Proof of Useful Work through 'API Mining' where participants use AI API keys to perform inference tasks and secure the network."
Read on Grokipedia →
Key Innovations
Why PoUW API Changes Everything
⚡

API-Abstracted Mining

Mining defined by API credential access, not hardware ownership. The cost model shifts from capex to opex.

🤖

Productive Consensus

Every block generates commercially valuable AI inference. Not wasted hashing — real, useful compute.

🔐

Ed25519 + 3/4 Quorum

Same crypto as SSH, Signal, Solana. 75% threshold — stronger than Bitcoin's 51%.

♾️

Forever Coin / The Fold

Perpetual miner incentives through era cycling. No fee-only security risk.

🌍

Near-Zero Energy

No ASICs, no GPUs, no mining rigs. Bitcoin uses 67-240 TWh/year. Centronium uses near zero.

🚀

Instant Participation

Create account = become a validator. Connect API key = start mining. No setup, no waiting.

Head to Head
Consensus Mechanism Comparison
CategoryPoW (Bitcoin)PoS (Ethereum)PoUW (Primecoin)PoUW API (Centronium)
Mining HardwareASICs ($2K-$10K+)None (stake tokens)Own hardwareNone — API key
Energy Use67-240 TWh/yearLowModerateNear zero
Useful OutputNoneNoneLimited (primes)AI inference
Entry BarrierVery highCapital (32 ETH)Hardware + skillAPI subscription
Attack Threshold51% hash rate33% stake51%75% validators
Cost ModelCapex (hardware)Capex (tokens)Capex (hardware)Opex (API fees)
Year Launched2009202220132026
Forever Coin Model
Tokenomics & The Fold
Perpetual miner incentives through bounded era cycling. No supply cap. No fee-only security risk.
100M
CENTRO / Era
10
Halvings / Era
38
Initial Reward
7.655
Tail Emission
∞
Eras (The Fold)
Halving phases (reward decreasing)
Tail emission (perpetual)
The Fold → Next era
How it works: Each era mints 100M CENTRO across 10 halvings over 20 years. Block reward starts at 38 and halves every ~1M blocks. After all halvings, permanent tail emission continues at 7.655 CENTRO/block. When the era's 100M tokens are fully minted, The Fold activates — automatically starting a new era with a fresh 100M allocation. This repeats forever.
Built for Growth
The Centronium Ecosystem

CENTRO Wallet

Send, receive, manage

CentroShield

Validators + mining

CentroScan

Block explorer

Mining Pools

Earn CENTRO

CentroSwap

Token exchange

Token Launchpad

Stake 1 CENTRO to launch

Central Reserve

Fee-backed liquidity

Partner API

Third-party integrations