Mashi

Building on @arc

[Arc @arc]

Arc Testnet will undergo a planned load testing phase on July 8, 2026.

The goal is to profile network performance and stability under edge-case conditions.

During testing, users may experience network congestion, higher failed transaction rates, higher fees, higher block times, and brief pauses in block production.

For the latest updates, check the status page: https://t.co/UCDhrzBQsz

[Chainlink @chainlink]

NEW: Arc, the L1 chain developed by @circle, officially joins Chainlink Scale to provide devs access to institutional oracle infra:

🔗 CCIP
⚡ Data Streams
📊 Data Feeds
🏦 Proof of Reserve

Arc 🤝 Chainlink

[Arc @arc]

New guide for teams building unified USDC balance flows with Gateway.

If you’ve already integrated Gateway directly, or are exploring a new implementation, this guide maps core flows to App Kits’ kit.unifiedBalance.* methods:

→ Deposits
→ Balances
→ Transfers
→ Forwarding
→ Delegate flows

Includes a migration checklist, lookup table, detailed notes, and guidance on when to use Gateway contracts and APIs directly.

https://t.co/eHzLNeIR5i

[Arc @arc]

Arc Transaction Memos are now available on Arc Testnet.

Memo-enabled calls add structured context to contract execution, preserve sender attribution, and only emit memo events when the contract call succeeds.

Use them to:
→ Add invoice IDs, payout refs, or customer IDs
→ Track payment context onchain
→ Make payments easier to reconcile

Start building: https://t.co/09eTztWiuV

[Arc @arc]

Builders need privacy primitives they can apply to real products.

Arc’s future confidential execution pathways are designed to support opt-in private transactions and private smart contract states in a familiar EVM environment.

That could help developers build for:
→ Private lending flows
→ Perps and trading workflows
→ Protected positions and strategy
→ Multi-step private app logic
→ Public and private transactions in the same block

A roadmap for composable privacy in onchain finance.

[Arc @arc]

Privacy is not the same as anonymity.

Join us for a Arc Privacy Whitepaper discussion and what future opt-in confidentiality could unlock for builders on Arc.

We’ll cover:

→ Why public-by-default transparency can limit real-world financial workflows
→ How Arc frames confidentiality with governed visibility
→ Use cases across payroll, treasury, trading, lending, and swaps
→ What is published, planned, not yet live, or still evolving

https://t.co/SglxtjDxFy

[Arc @arc]

Arc Testnet is upgrading to v0.7.2.

This release activates on Testnet on June 18, 2026 at 5:00 AM PT, bringing new features to the network.

Please upgrade your testnet nodes before activation to avoid desyncing.

Release notes: https://t.co/HR3F1vZmLN

[Mashi @0xmashi]

@grachidefi @arc @samconnerone @bobbilee Gm Grachi

[Mashi @0xmashi]

@bobbilee 🙋‍♂️

[Arc @arc]

Introducing a Circle-built open-source prediction markets sample app on Arc Testnet.

A decentralized prediction market platform built on Arc with @UMAprotocol’s Optimistic Oracle V2 for trustless market resolution.

Arc enables prediction markets with sub-second settlement, native USDC/EURC support, crosschain USDC deposits, and predictable USDC-denominated gas fees.

Explore the repo: https://t.co/46fetP9e6Z

[Arc @arc]

The Bored Room is officially live.

Join us and watch this absurd event about the absurdity of old financial rails. https://t.co/EMmm8Dzqhk

[Arc @arc]

Shoutout to our Architects with @samconnerone

[Mashi @0xmashi]

https://t.co/pfgUE6Ej6B

[Arc @arc]

MEMO: Please prepare for prolonged inactivity.

Your shift begins tomorrow at 8AM PT.

https://t.co/bwdIPT6e52

[Ezgi @ezgiyaltay]

1/ @IstanbulBlockWk 2026 just wrapped up. Regulators, institutions, global players and local builders all in the same room. I moderated a banking panel on blockchain adoption. Here's what stood out 🧵🇹🇷

[Mashi @0xmashi]

all BEFORE Arc mainnet

[Rachel Mayer @0xrachelita]

2000 architects
100+ partners
244M testnet transactions

all BEFORE Arc mainnet

[Arc @arc]

Before Arc, there was waiting.

So much waiting. Watch The Bored Room on June 9.

https://t.co/bwdIPT6e52

[Sam | Circle and Arc Community @samconnerone]

Five employees at Boream & Boredley wait for approvals, updates, and the future economy to arrive. Join the livestream June 9 at 8AM PST.

Set a reminder to watch this absurd event about the absurdity of old financial rails.

https://t.co/ZZJn8NpCYl

[Sam | Circle and Arc Community @samconnerone]

We’re up to 2,000 official Architects….

and counting!

built different. architects.

[Mashi @0xmashi]

@samconnerone 🇹🇷