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@qrrier

Qrrier

@qrrier·Joined October 2026

Get paid to fly, shop the world, ship with travelers. qrrier.com

About

Get paid to fly, shop the world, ship with travelers. qrrier.com

Available for

Nothing here yet.

Qrrier's blogs

Qrrierqrrier.hashnode.dev2 posts

Articles Comments

Designing an escrow state machine for peer-to-peer deliveries with USDC on Base

A peer-to-peer delivery looks simple from the outside: someone abroad wants a thing, someone with a plane ticket brings it, money changes hands. Once you try to model it, it becomes a small distribute

5h ago · 8 min readqrrier.hashnode.dev

Would You Hand a Stranger $1,299 for a MacBook? Designing Trust Into Traveler Delivery

Picture both sides of one order. A developer in Curitiba wants a MacBook Air 13" (M5, 16 GB / 512 GB). In Brazil it costs R$15,999. A traveler flying Miami to São Paulo next week could buy it in the U

22h ago · 6 min readqrrier.hashnode.dev

About

Get paid to fly, shop the world, ship with travelers. qrrier.com

Available for

Nothing here yet.

Qrrier's blogs

Qrrierqrrier.hashnode.dev2 posts

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@qrrier

Qrrier

@qrrier·Joined October 2026

Get paid to fly, shop the world, ship with travelers. qrrier.com

About

Get paid to fly, shop the world, ship with travelers. qrrier.com

Available for

Nothing here yet.

Qrrier's blogs

Qrrierqrrier.hashnode.dev2 posts

Articles Comments

Designing an escrow state machine for peer-to-peer deliveries with USDC on Base

A peer-to-peer delivery looks simple from the outside: someone abroad wants a thing, someone with a plane ticket brings it, money changes hands. Once you try to model it, it becomes a small distribute

5h ago · 8 min readqrrier.hashnode.dev

Would You Hand a Stranger $1,299 for a MacBook? Designing Trust Into Traveler Delivery

Picture both sides of one order. A developer in Curitiba wants a MacBook Air 13" (M5, 16 GB / 512 GB). In Brazil it costs R$15,999. A traveler flying Miami to São Paulo next week could buy it in the U

22h ago · 6 min readqrrier.hashnode.dev

About

Get paid to fly, shop the world, ship with travelers. qrrier.com

Available for

Nothing here yet.

Qrrier's blogs

Qrrierqrrier.hashnode.dev2 posts