Sebastien Rousseau
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Sebastien Rousseau

Articles on AI, post-quantum cryptography, ISO 20022 and the future of payments.

TOPIC

Blockchain & Digital Assets

Bitcoin, blockchain fundamentals, ERC-20 tokens, stablecoins, and the regulatory frame around digital-asset-backed payment rails.

BlackRock tokenised money market fund architecture diagram — BRSRV OnChain Shares and BSTBL ERC-20 share class with GENIUS Act reserve flows
Blackrock · Brsrv · Bstbl

Stablecoin Yield by Another Name: BlackRock's BRSRV and BSTBL Filings Decoded

· Sebastien Rousseau

Stablecoins cannot pay yield under the GENIUS Act. On 8 May 2026, BlackRock filed two SEC registrations for products that solve this constraint by being regulated as money market funds rather than stablecoins — while behaving, in the wallet, like yield-bearing dollars. A close reading of BRSRV, BSTBL, and the OCC rulemaking they respond to.

Giant white pillars
Mathematical Constants · Cryptographic Constants · Rust

The making of the Express Transaction Credits Platform

· Sebastien Rousseau

Developing a comprehensive framework for the next generation of Ethereum Request for Comment compliant tokens using the ERC-223 standard.

Turned off laptop computer on top of brown wooden table
Pain001 · Iso 20022 · Payment Automation

Understanding the Technology behind Blockchain

· Sebastien Rousseau

Building a Cryptocurrency on the Ethereum Blockchain: A Comprehensive Guide to Blockchain Development, Tokenization and Cryptocurrency Implementation