Technology · Blockchain

Blockchain Transparency

EWOOD PGM uses a distributed ledger to create an immutable carbon credit registry every VCU issued, transferred and retired is permanently and publicly auditable, eliminating double-counting and restoring trust in voluntary carbon markets.

Why blockchain for carbon?

Integrity

Immutability

Once a credit is recorded on the blockchain, no retroactive changes are possible. Every issuance, transfer and retirement is permanently sealed, the trust layer carbon markets have always needed.

Auditability

Transparency

The full credit lifecycle is publicly verifiable by any party with an internet connection. No opaque registries, no fragmented databases, one authoritative, open audit trail linking tree to tonne to token.

Composability

Interoperability

Standards (such as ERC-20) enable seamless integration into DeFi: AMMs, lending protocols and corporate ESG smart contracts can all utilise EWOOD credits natively, without the need for intermediaries or manual reconciliation.

Technical architecture

The trust layer, block by block

Each carbon credit follows a five-block lifecycle on the compatible ledger, from raw project data to immutable retirement record.

  1. 1

    Block 1 — Project data

    MRV field measurements, GPS coordinates and satellite cross-validation anchored to IPFS and referenced on-chain.

  2. 2

    Block 2 — MRV verification

    Third-party DOE audit result and Verra validation decision recorded immutably with timestamp and auditor signature hash.

  3. 3

    Block 3 — VCU issuance

    Smart contract mints tokens 1:1 against registered Verra VCUs. Total supply is mathematically constrained to verified tonnes.

  4. 4

    Block 4 — Credit transfer

    Token transfers between wallets logged on-chain in real time. Full ownership history publicly queryable, institutional-grade chain of custody.

  5. 5

    Block 5 — Retirement

    Token burned on retirement. Unique NFT certificate minted with Verra registry link, MRV data hash and claimant address, permanent offset proof.

Smart contract features

Issuance

Automated issuance

Tokens mint automatically upon Verra registry confirmation. No manual intervention, no counterparty delay — supply is always mathematically constrained to verified tonnes.

Retirement

Retirement lock

Burn-on-retirement mechanism makes double-claiming cryptographically impossible. Each retirement generates a unique NFT certificate permanently linked to the Verra registry entry.

Governance

Investor rights

Revenue distribution to token holders is automated via smart contract when carbon credits are sold. No manual reconciliation, no counterparty risk, no bilateral OTC delays.

Interoperability

Cross-chain bridge

Standard enables seamless integration with DeFi protocols, AMMs and corporate ESG smart contracts across multiple Blockchain-compatible networks.

Integration ecosystem

Registry

Verra Registry API

Direct API integration with the Verra voluntary carbon registry ensures 1:1 token-to-VCU correspondence. Issuance, transfer and retirement states are mirrored in real time between on-chain and off-chain registries.

Network

Ethereum mainnet

Smart contracts deployed on Ethereum-compatible mainnet for maximum liquidity, DeFi composability and institutional credibility. ERC-20 and ERC-721 standards ensure broad wallet and exchange compatibility.

Storage

IPFS document storage

MRV reports, Verra certificates and NFT retirement metadata stored on IPFS — content-addressed, tamper-evident, and permanently accessible. Every token links to its full provenance document set.

Get involved

Explore our crypto credits — or speak with our tech team

Retour en haut