CrossBar at Devcon 8.
We build open, verifiable silicon: chips whose design source is published and whose die you can inspect through the package.
CrossBar booth · Impact Space, 3rd floor · Jio World Centre, G Block, Bandra Kurla Complex, Mumbai
Tue–Thu 9:00–17:00 · Fri 9:00–15:00 IST.
Four ways to engage with us.
IRIS inspection & a free board
IRIS images the chip's transistors through its package, so you can check the silicon against its published source. Inspection is walk-up and unlimited.
- Free Dabao boards in two daily batches: 9:00–13:00 and 13:00–17:00
- One per person · inspection first · you keep it
- Nov 3–6 · 9:00–17:00 · Fri the booth closes at 15:00
CrossBar Ostros
Ostros is CrossBar's open-source hardware wallet on its own security chip whose RTL is published on GitHub. It runs Xous, a Rust microkernel, on the chip's open RISC-V core.
- Nov 3–5 · 3 sessions · Workshop · Universal Ethereum Signer on Open-Source Silicon
- Wed, Nov 4, 17:00 · Workshop · Getting Ethereum Signer running on an open-source OS and chip
- Thu, Nov 5, 10:00 · Talk · ART-ECDSA threshold signing
- Fri, Nov 6, 10:00 · Talk · Latest Developments in Open Silicon
- Fri, Nov 6, 14:00 · Talk · Building the Universal Ethereum Signer
- At the booth: talk with us anytime it's open
Dabao Hackathon
Build anything on the Baochip-1x, a chip whose Verilog and VHDL are published. No categories, no required stack. Accepted builders get a board guaranteed.
- Prizes up to $5,000 for the builds that impress us most
- Pick up Nov 3–6 · submit one link by Dec 15, 9 pm ET
- Winners Dec 18, 9 pm ET
Sovrency CARD8 launch
The first hardware MPC wallet for stablecoins: no seed phrase, and both signing shares stay with you. One hour of reveal, live demo and hands-on time. Coming soon at sovrency.com
- Wed, Nov 4 · 19:30–20:30 IST
- Sofitel Mumbai BKC · Salon La Vallière Dubarry
- Also available on YouTube livestream
- Buffet dinner included
Experience technical deep dives from the people who built it.
Talks and hands-on workshops. Times IST. Save a session to watch the livestream and ask questions live.
| Session | Speaker | Day | Time | Room | Link |
|---|---|---|---|---|---|
| Universal Ethereum Signer on Open-Source SiliconWorkshop · 3 sessions | Nicolas BaccaChef at ZKNox | Tue, Nov 3 Wed, Nov 4 Thu, Nov 5 | 14:30–15:30 10:00–11:00 14:00–15:00 | Open Hardware Zone | |
| Getting Ethereum Signer running on open-source operating system and chipWorkshop | Nicolas BaccaChef at ZKNox | Wed, Nov 4 | 17:00–17:50 | Workshop 1 | Save & Watch live → |
| ART-ECDSA: Threshold Signing Light Enough for a Hardware WalletTalk | Sung-Hyun JoCTO, CrossBar | Thu, Nov 5 | 10:00–10:20 | Security Hub | Save & Watch live → |
| Latest Developments in Open SiliconTalk | Mark DavisCEO, CrossBar | Fri, Nov 6 | 10:00–10:25 | Lotus 1 | Save & Watch live → |
| Building the Universal Ethereum SignerTalk | Nicolas BaccaChef at ZKNox | Fri, Nov 6 | 14:00–14:25 | Lotus 1 | Save & Watch live → |
Talk to us 1:1 about Ostros and Sovrency.
Find an engineer at the CrossBar booth for a one-on-one conversation, any time the booth is open.
The first hardware wallet open from chip to app
Ostros is CrossBar's open-source hardware wallet: a 350 MHz open RISC-V core running Xous, with the chip logic, boot chain, OS and signing app all published. The first limited batch, engraved, ships in late November to the developers who build the first apps on it.
- Founders Edition · applications open now, weekly review
- At the booth · the chip's die under IRIS, the signer live on the E Ink screen
- Dabao board · register for Baochip's dev board with the same silicon
- Demo · Wed, Nov 4, 17:00, Workshop 1 · Ethereum Signer running on Ostros, with Nicolas Bacca
Threshold signing with Sovrency
No seed phrase: signing is split between your card and your phone, and both shares stay with you. Sign a transaction, review it on the E-Ink screen, recover after losing a phone.
- Sovrency CARD8 · the first hardware MPC wallet for stablecoins
- Launch · Wed, Nov 4, 19:30–20:30 IST
- Talk · Thu, Nov 5, 10:00, Security Hub · ART-ECDSA threshold signing, Sung-Hyun Jo
Read the source. Start building.
Everything we talk about at Devcon is open. Start before you arrive.
Baochip & betrusted
The open Baochip-1x silicon, the Dabao board and the Xous OS.
Find us at the booth.
CrossBar booth, Impact Space, 3rd floor, Jio World Centre. Tue–Thu 9:00–17:00, Fri 9:00–15:00 IST.