§1 — The brief.
The brief.
Evidentia is a bond-backed stablecoin protocol denominated in local currencies — Ukrainian hryvnia, Turkish lira, Vietnamese dong. The thesis: institutional and retail users in markets with weak fiat want stable digital value in their local currency, not in USD. The mechanism: tokenize sovereign or municipal bonds in those currencies, issue stablecoins backed by those bonds.
Evidentia is one of Zpoken's own internal protocols, not an external client engagement — Mike Yezhov contributes to it, and the engineering team is Zpoken's. The case is included because the primitives we ship for clients are ones we had to build for ourselves first.
§2 — What we shipped.
What we shipped.
[01]
Bond-backed issuance mechanism
─ ISSUANCE
[02]
ERC-1155 token model · per-batch metadata
─ TOKEN MODEL
[03]
Multi-chain deployment · 3 chains
─ DEPLOYMENT
[04]
LayerZero cross-chain transfer
─ BRIDGE LAYER
[05]
eUAH · eTRY · eVND issuance
─ STABLECOINS
Evidentia is live across three chains — Ethereum, Solana, and Tron. Cross-chain transfer runs on LayerZero. The token model uses ERC-1155 with per-batch metadata so each issuance batch carries its own backing-bond reference rather than collapsing into a single fungible balance.
§3 — Engineering decisions.
Engineering decisions.
ERC-1155 over ERC-20.
A bond-backed stablecoin where each issuance batch is tied to a specific backing bond cannot collapse cleanly into a single fungible ERC-20 balance — you lose the auditable per-batch backing claim. ERC-1155 with per-batch metadata preserves the backing trail per token unit while still letting batches trade and aggregate at the application layer. The cost is a heavier token interface; the win is provable backing per balance.
LayerZero over a custom bridge.
Three chains times pairwise bridges is a security surface that doesn't justify the engineering. LayerZero gives a uniform messaging primitive across all three chains and concentrates the cross-chain security argument on a single audited layer.
Local currencies first, USD never.
The protocol thesis only works if it's stable in the user's local currency. eUSD-on-three-chains is a different product. Evidentia stayed disciplined: eUAH, eTRY, eVND, and the next currencies in the roadmap are all local-fiat denominated.
§4 — Where it stands.
Where it stands.
Live and ongoing. New currencies and chain deployments shipped on a continuing roadmap.
§5 — Tech stack.
Tech stack.
~/zpoken/work/evidentia/stack
Solidity · Rust (Solana programs) · ERC-1155 · LayerZero · Ethereum · Solana · Tron · Hardhat · audit-grade testing
§6 — Public surface.
Public surface.
§7 — Founders.
Founders.
Mike Yezhov contributes to the protocol. The engineering team is Zpoken.