7Block Labs
@7blockLabs
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We build decentralized applications.Specialising in end-to-end blockchain services, solutions: from Web3 and smart-contract development to security audits
London, UK
Joined October 2025
Think DAOs mean decentralization? Think again. 80% of governance votes are controlled by just 3 wallets! Let's debunk this myth. #BlockchainReality
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This is a technical whitepaper, not a launch announcement. We want security researchers, ZK engineers, and bridge builders to tear this apart. Read it: https://t.co/zvtm2qJyPW DMs open for technical discussion 🔓
github.com
Zero-knowledge proof powered cross-chain token bridge enabling secure transfers between Solana and EVM chains. Features Light Protocol state compression, Groth16 SNARKs, and a TypeScript relayer se...
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Trade-offs we chose: ✅ Cryptographic soundness > signature trust ✅ ~20-25s latency (competitive with intent bridges) ❌ ~$4-6 EVM withdrawal cost ❌ Sequential IMT updates limit throughput Not "trustless." Trust-MINIMIZED with explicit limitations.
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Architecture: Solana → Compressed state (Light Protocol, 95% cost reduction) Relayer → Groth16 proof generation (off-chain) EVM → On-chain verification (~200k gas) Key: Poseidon nullifiers prevent replay, IMTs prove non-membership.
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Bridges lose billions because they trust multisig committees. Meridian Link replaces signatures with ZK proofs. A relayer can censor your transaction, but they can't steal your funds. Here's how we built it 🧵
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This is a research contribution, not marketing. We want: → Cryptographers to review the threat model → ZK engineers to challenge our circuit design → Bridge builders to discuss trade-offs Read the whitepaper: https://t.co/zvtm2qJyPW Open questions & collaboration welcome.
github.com
Zero-knowledge proof powered cross-chain token bridge enabling secure transfers between Solana and EVM chains. Features Light Protocol state compression, Groth16 SNARKs, and a TypeScript relayer se...
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Technical highlights: • Poseidon hashing for nullifiers (~300 constraints vs 25k for SHA-256) • Light Protocol compressed accounts: 15k lamports vs 1.6M for PDAs • Indexed Merkle Trees for non-membership proofs • BN254 curve for EVM compatibility Full cryptographic specs in
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Honest trade-offs: ✅ Groth16 provides ~100-bit security (not "trustless") ✅ Relayer compromise = censorship, NOT theft ✅ 95%+ cost reduction via state compression ❌ Throughput: ~12-20 tx/min (sequential IMT updates) ❌ EVM withdrawal: ~$4-6 at 30 gwei We chose soundness
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Here's how Meridian Link works: Three layers: • Solana (compressed state via Light Protocol) • Off-chain relayer (Groth16 proof generation) • EVM (on-chain verification) Relayer can't forge proofs. Only censor.
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The insight: Replace signature aggregation with zero-knowledge proofs. Instead of "13 people attested to this transfer," we prove: ✓ Deposit exists in Solana state tree (cryptographically) ✓ Nullifier prevents replay ✓ No trusted intermediaries needed Math > multisig.
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Cross-chain bridges have lost $2.5B+ between 2022-2023. The core problem: trust assumptions. Most bridges rely on multisig committees (Wormhole: 13/19 guardians). Compromise 7 signers → arbitrary message forgery. We built something different. 🧵
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Secure proxy voting with on-chain checks. Start by implementing a verified delegation registry today. What’s your biggest challenge?
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Real-world risk: attackers delegating votes without consent can tilt governance.
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Fix: use an on-chain delegation registry linked to holder signatures and revocation checks.
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If on-chain checks are missing, any signature could authorize a vote.
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Signatures alone don't prove consent. Without live verification, delegated votes can be forged.
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Law says proxy voting is allowed. On-chain logic often lacks proof of consent. This thread reveals why the gap matters and how to fix it.
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The algorithm is broken. The shipping is not. The builders are busy. It’s the first weekly newsletter of the year, and we’re starting 2026 the only way Solana knows how: 🚢🚢🚢 📰 Headline News - @MorganStanley filed an S-1 with the SEC to launch Solana ETF - @wyostable
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Design isn't just an aesthetic choice—it's foundational to real decentralization. Architect your DAO to avoid whale control. #TrueDecentralization
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Want to know how decentralized your DAO truly is? Start by measuring the Nakamoto Coefficient. It's like a decentralization audit. #BlockchainMetrics
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Whale voting isn't just a buzzword—it's a real threat to DAO governance. Why let a few control the many? #DecentralizationTheater
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