Bubbles Protocol

Bubbles Protocol makes crypto payments as simple as sending an email. Instead of Alice needing to figure out which chain, which token, or which bridge Bob prefers, she just sends to bob.eth.

• The problem today: Alice has USDC on Base, Bob wants ETH on Arbitrum. Normally, Alice must bridge, swap, and then send — 3 steps, 3 fees, 15 minutes, and lots of logistics.
• With Bubbles Protocol: Bob sets his payment preference once in his ENS record (e.g., “ETH@Arbitrum”). Alice can send any token on any chain to bob.eth in a single transaction. The protocol reads Bob’s preferences and automatically handles swaps/bridges using 1inch Fusion+. Bob receives exactly what he wants, where he wants it — instantly.

Demo app: Bubbles Social Layer To showcase this, we built a fun demo app called Bubbles, where users send each other “appreciation stickers” (bubbles). Behind the scenes, those bubbles are tied to small payments that are auto-converted across chains/tokens via ENS + 1inch.

• NFC wristbands map to ENS names → tap to send a bubble.
• Sending a bubble automatically resolves the receiver’s chain/token preferences.
• Users never see bridging, slippage, or token complexity — just a fun social experience.

Impact:

• Before: 3 steps, 15 minutes, technical knowledge required.
• After: 1 step, instant, anyone can use it. This unlocks frictionless crypto payments for peers, creators, merchants, or even supply chains.

The protocol is built on ENS (Ethereum Name Service) with automatic routing powered by 1inch Fusion+ APIs.

ENS integration (preferences)

• Each user sets their preferred chain + asset + address as ENS text records.
• Example: bob.eth → “ETH@Arbitrum”.
• This record acts as a universal payment preference policy.

Wallet query + resolution

• When Alice enters bob.eth, her wallet queries ENS to fetch preferences.
• If Alice already has the right asset on the right chain, the wallet just transfers directly.
• If not, it falls back to cross-chain routing.

Cross-chain swap with 1inch Fusion+

• If Alice is on USDC@Base but Bob prefers ETH@Arbitrum, the wallet automatically calls 1inch Fusion+ APIs.
• Fusion+ determines the optimal path (swap + bridge), executes the conversion, and delivers ETH on Arbitrum to Bob’s preferred address.
• Alice signs one transaction; routing and bridging happen behind the scenes.

Components

• ENS text records → store preferences.
• Smart contracts → define the routing protocol and intent guardrails.
• Wallet integration → queries ENS and triggers Fusion+ flows.
• 1inch Fusion+ APIs → execute swaps + cross-chain settlement.
• Demo app (Bubbles): Next.js frontend with ENS integration + NFC support for tap-to-send appreciation stickers.