A confidential settlement layer built on Solana, designed for regulation under MiCA. PAPER combines token-level cryptographic privacy with a multisig-protected disclosure mechanism intended to meet EU regulatory standards.
PAPER is a stack — each layer solves a distinct problem and composes cleanly with the rest.
Built on the Solana Token-2022 Confidential Transfer extension. Balances and transfer amounts will be encrypted on-chain using twisted ElGamal encryption with bulletproof range proofs — verified by the Token-2022 program itself once the ZK ElGamal Proof Program is reactivated.
The Identity Whitelist Registry gates mint and redeem at the rails. Circulation between those points is free and confidential — the same model as physical cash.
A multisig-protected ElGamal key held under 2-of-3 authorization enables selective decryption of specific transfers under court order, MiCA supervisory request, or AML investigation. Every use is publicly logged on-chain after a 24-hour delay.
Squads v4 2-of-3 multisig with a 24-hour time-lock on every protocol upgrade. No single signer, no unilateral changes, no unseen modifications to the mint, the IWR, or the Auditor Key.
~400ms block times and sub-cent fees on Solana. Real banknote-replacement performance.
Designed against MiCA Article 19, 22(4), 36, and 39 from the first line of code.
No accounts, no passwords; no PII held by Softseco — KYC stays with licensed ramp partners at mint and redeem. Authenticate with Phantom, Backpack, Solflare, or Ledger.
1:1 mint and redeem with no spread. Revenue comes from reserve yield, not user friction.
TypeScript and Rust libraries to be released under MIT — built for wallets, exchanges, and indexers.
Standard cryptographic primitives (twisted ElGamal, bulletproofs) with extensive academic literature.
Confidentiality in eUSD by Softseco is not obfuscation, and it is not a private side-chain — it is cryptography designed to run in the open, on a public network, where anyone can verify the rules are followed without seeing the figures. Balances and transfer amounts will be encrypted with twisted ElGamal directly inside each token account, and every transfer will ship with zero-knowledge range proofs that guarantee the hidden amount is non-negative and the books still balance, without revealing a single number.
Because those proofs are checked by the network itself, no one has to trust Softseco to confirm that supply is conserved. And because the holder controls the viewing keys, disclosure is selective by design: a user, or a regulator acting with lawful standing, can decrypt exactly what they are entitled to see — and nothing beyond it.
Confidential dollars have second-order effects that extend beyond the wallets that hold them.
European SMEs gain a settlement instrument that doesn't publish their supplier list to competitors. B2B procurement becomes confidential without becoming opaque to regulators.
Salary, savings, donations, and peer transfers keep their amounts between the parties involved. The sums in an ordinary participant's financial life are no longer broadcast to anyone with a block explorer, even though the transactions themselves remain on a public ledger.
A MiCA-aligned EMT issued from Poland with EU passporting strengthens the European stablecoin shelf. The euro variant, eEUR by Softseco, extends the same model to local currency settlement.
Reserves generating yield that funds the protocol — rather than user fees — keep the cost of money close to par. Zero-fee mint/redeem becomes economically sustainable at scale.
The Shielded Liquidity Vault, once active, is designed to neutralize sandwich attacks, frontrunning, and backrunning on settled trades — protecting ordinary users from extraction they never knew they were paying.
Daily Proof-of-Reserves, the public disclosure log, and the 24-hour time-lock create ex-post transparency that public-ledger stablecoins do not actually provide — because there's no operator mechanism to log.
The whitepaper covers the full architecture, governance, audit roadmap, and risk disclosure.