Developers post live apps, integrations, or demos.

Ecosystem Showcase & Launches

If you haven't seen it yet: it's a payments app where you send by social nickname across the networks people already use.

We started in November 2025, basically a month after Arc Network went live. We became the first social platform on Arc. At first it really was an experiment. Then it stopped feeling like one. We learned a lot, hired and reorganized, and cut the product down to what actually matters.

We've been building quietly, but quietly doesn't mean idle. The 

release is in progress now, and some very attentive users already found traces in our contracts and database and managed to test pieces early.

for identity and embedded wallets. One login, socials attached, wallet ready.

OAuth tokens stayed in memory and were used only when we had to call provider APIs. Nothing exotic there. All provider traffic went through one backend gateway with retries and rate limits.

If a metric looked weird, we didn't trust one source. We matched Privy payloads against our schema, checked chain activity against our DB (and pulled indexer/subgraph data when it was easier to read there), then manually spot-checked a random slice of X (Twitter), Twitch and Telegram users.

Counts and balances for the window we measured:

: 11,700. Cards sent: 31,800. Transactions: 39,000.

: 86,000 USDC + 3,100 EURC (≈ 89,100 total)

Users can plug in an external wallet through the usual EVM connector whenever that path makes more sense.

For Circle's Developer Controlled Wallets flows, we choose the internal wallet the same way every time: connected address first, then provider IDs from the Privy profile, then the normalized Privy user ID our APIs already understand.

We are not dumping all internals into this post. In the next one, we will share the exact request payloads, retry logic, and the full Privy - Circle data mapping.

If you're interested in learning more about our user data verification methodology, we invite you to check out our blog:  

https://sendly.digital/blog/privy_results

Sendly Digital: What We Learned from the Privy Testnet. 1/4

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