Mysten Labs has unveiled Tessera, a prototype closed settlement network on Sui designed to give businesses the privacy of traditional rails while keeping blockchain-native auditability and controls. Announced in an Aug. 10 X thread, Tessera is pitched as a KYC-gated B2B settlement system where approved members can settle invoices with a confidential stablecoin. Onchain records will still show who paid whom and when, but payment amounts are encrypted — displayed to outsiders as ▦▦▦ — so competitors cannot monitor pricing, volumes, treasury movements or other commercially sensitive signals. Key mechanics and features - Confidential payments: Amounts are hidden from public view but visible to the transacting parties. This preserves business secrecy while retaining an auditable trail of counterparties and timestamps. - Access controls: Membership is gated via KYC. Network operators can onboard/fund members, freeze individual accounts, or pause the network when necessary. - Dispute and oversight tooling: Tessera supports one-time transfers and recurring payment channels. If a dispute arises, an arbiter can be granted time-limited access to the specific transaction. Regulators and auditors can be given scoped visibility—e.g., a prudential regulator could see the whole network, a tax office only records related to a single member. - Encryption & policy layer: Tessera combines Sui’s confidential-transfer tech with Seal, Mysten’s encrypted data and programmable access system. Seal uses threshold encryption to split control of decryption keys across multiple parties and enforce who can view what and for how long. Mysten emphasizes that authorized viewers can see data but cannot move funds. The cryptography under the hood Sui’s confidential transfers — which entered public testing in June — use Twisted ElGamal encryption plus zero-knowledge proofs to prove payment validity (prevent overdrafts or token forgery) without revealing amounts. Seal’s threshold-encryption model then enables fine-grained, revocable access policies for auditors, regulators, and dispute arbitrators. Why this matters Public visibility is a major barrier for enterprises exploring blockchain settlement: companies don’t want competitors or markets watching payroll changes, supplier pricing, trading positions or treasury activity in real time. Tessera aims to bridge that gap by delivering confidentiality for amounts while preserving identity and compliance controls — a different trade-off than anonymity-focused privacy coins. How Tessera fits the broader landscape Other projects are pursuing similar goals. XRP Ledger validators have discussed confidential transfers for tokenized-asset markets, and Circle recently introduced Arc Privacy for confidential institutional smart contracts. Like Tessera, these efforts try to hide sensitive financial details while maintaining auditability and compliance. Tessera’s distinguishing feature is its emphasis on identified participants and scoped oversight, rather than full anonymity. Caveats and market reaction Mysten presents Tessera as a prototype, not a production-ready network. The announcement did not name a stablecoin issuer, disclose regulatory approvals, or provide a commercial launch timeline or participating companies. SUI traded around $0.69 after the announcement (24-hour range roughly $0.684–$0.704 on CoinGecko), with no clear price move directly tied to Tessera. Next steps The practical test will be whether Tessera can move from demonstration to real-world use — supporting regulated businesses with varying privacy, reporting and dispute-resolution requirements. If it succeeds, the prototype could offer an important template for confidential institutional settlement on public blockchains, balancing commercial secrecy with compliance and oversight. Read more AI-generated news on: undefined/news