PayNote

The minimal payment primitives for Web3 Built on @arc

[PayNote @Paynote_arc]

PayNote is building non-custodial payment request infrastructure on @arc

​➜ Create a USDC payment request
​➜ Share a link
​➜ Settle directly through wallets
​➜ Verify onchain

The payment infrastructure is live right now

Start requesting payments at https://t.co/6ZEsy0Fu1M

[PayNote @Paynote_arc]

PayNote is now listed on @arclens_app, the Arc ecosystem directory.

Non-custodial payment coordination for @arc builders.

Human link sharing or full agent API with x402 and ERC-8183. Self-serve API keys at https://t.co/zrw4ObHl8g.

[PayNote @Paynote_arc]

Live: 29 API routes via x402 protocols.

Supporting @circle USDC/EURC on @arc rails, it features signed intents with EIP-191 signatures for verified badges, idempotent verification, webhook retries, and an open Python SDK for autonomous machine-to-machine financial coordination.

[GR3AT @EGCrypt_]

Added a Prediction Market Payout template to Paynote.
https://t.co/8cTgITskKi now has 6: invoice, freelance, retainer, bounty, expense, and prediction market settlement.

Small addition, but it tracks where Arc builders are heading. Prediction markets are becoming a real category here, and settlement needs a home.

If you're building a prediction market protocol on Arc and need a payout/settlement layer, this is exactly the kind of thing @Paynote_arc's recurring + webhook system can plug into.

[GR3AT @EGCrypt_]

PayNote roadmap update: Agent Wallets.
@arc announced Turnkey integration for dev-controlled wallets. We're aligning our x402 layer to it, agents get scoped signing wallets (max spend, allowed recipients, and allowed tokens) and sign EIP-3009 authorizations without holding raw keys.
No human custody. No agent custody risk either.

https://t.co/igxs16F0mn

[GR3AT @EGCrypt_]

Yesterday I presented PayNote at @arc Office Hours to 300+ builders in the room.

Walked through the full flow: payment request created in seconds, payer connects wallet, settles on Arc, and a non-custodial, on-chain receipt is generated. Zero accounts. Zero friction.

I also broke down the programmatic flow, explaining exactly how AI agents can interact, trigger, and settle these transactions autonomously without a single human click.

Ironically, The Bored Room was running simultaneously, and we had to wrap up early because legacy finance moves that slow.

Shoutout to @silencexlm, @0xmikef, @samconnerone @bobbilee, and the @arc crew for the platform. And to everyone who stayed and engaged, you made it worth showing up.

@Paynote_arc is payment coordination infrastructure on Arc. If you're building and need a payment layer, our API is open, docs are live, and self-serve keys take 30 seconds.

https://t.co/DQqI6MMARa

[GR3AT @EGCrypt_]

Big update! @Paynote_arc is now multilingual.

The stablecoin internet is global. Payment infrastructure should be too. Language selector live on https://t.co/M5dSaezZls

Built on @arc

[GR3AT @EGCrypt_]

Been building @Paynote_arc on Arc for weeks.
Started with a form. Now it has:
• Smart contracts on Arc Testnet
• Multi-token support (USDC, EURC, cirBTC)
• Agent-compatible API & webhooks
• npm SDK & docs

@arc sub-second finality and USDC-as-gas makes it genuinely different.

[GR3AT @EGCrypt_]

@Paynote_arc now supports cirBTC. You can now request payments in USDC, EURC, or cirBTC on @arc.
https://t.co/M5dSaezZls

[PayNote @Paynote_arc]

PayNote is building non-custodial payment request infrastructure on @arc

​➜ Create a USDC payment request
​➜ Share a link
​➜ Settle directly through wallets
​➜ Verify onchain

The payment infrastructure is live right now

Start requesting payments at https://t.co/6ZEsy0Fu1M

[GR3AT @EGCrypt_]

Just deployed PayNoteRouterV2 on @arc testnet, a programmable payment router for USDC and EURC.
Exact-amount approvals only. Token whitelist enforced on-chain. No unlimited approvals. No custody.

https://t.co/M5dSaezZls | built on @arc

[PayNote @Paynote_arc]

Direct on-chain payments with zero onboarding.

➠ Create a request (Amount + Reason)
➠ Share your unique link anywhere
➠ Get paid instantly direct to your wallet

A non-custodial, account-free setup delivers pure user abstraction, built on @arc

https://t.co/6ZEsy0Fu1M

[PayNote @Paynote_arc]

Direct on-chain payments with zero onboarding.

➠ Create a request (Amount + Reason)
➠ Share your unique link anywhere
�� Get paid instantly direct to your wallet

A non-custodial, account-free setup delivers pure user abstraction, built on @arc

https://t.co/6ZEsy0Fu1M

[GR3AT @EGCrypt_]

Complex on-chain payments should not require a master's degree. They should just work.

Just pushed an update to the @paynote_arc UI.

Non-custodial, state-free routing, and now featuring a minimal light and dark mode for a better builder experience.

[PayNote @Paynote_arc]

Long term direction:

programmable payment intents, APIs, agent-compatible payment flows, and settlement coordination infrastructure.

[PayNote @Paynote_arc]

PayNote is building non-custodial payment request infrastructure on @arc

​➜ Create a USDC payment request
​➜ Share a link
​➜ Settle directly through wallets
​➜ Verify onchain

The payment infrastructure is live right now

Start requesting payments at https://t.co/6ZEsy0Fu1M

[PayNote @Paynote_arc]

❖ No custody.
❖ No private key access.
Payments execute directly through user wallets.

Current flow:
request → payment → on-chain verification → receipt