Institutional Auction Exchange

Valorem

Env / rpc / devnet
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Marketplace / Dynamic lots

Real world asset auction marketplace.

The public storefront is now sourced from PostgreSQL rather than a hardcoded catalog. Active lots remain visible while completed settlements are filtered out and moved into the winning wallet’s private profile.

Live marketplace

Lots / 4

Visible lots

4

Bidding

4

Reveal

0

Settlement

0

Sign in with Solana to create lots and unlock the private profile route for purchased inventory.

Database firstBase64 imagesSIWS protectedCompleted lots hidden
Lot 01Bidding
Test 011
Contract / Cc7B...sNBx

Contract / Cc7B...sNBx

Test 011

138ufwf29yf92173yrf932ypr23ur8upo23ur8213

Seller

FH2J...ZKso

Contract

Cc7B...sNBx

Created

Apr 7, 2026, 3:53 PM

Updated

Apr 7, 2026, 3:53 PM

Issuer

FH2J...ZKso

Enter Auction
Lot 02Bidding
Tech Patent
Contract / 3B6M...grrp

Contract / 3B6M...grrp

Tech Patent

This image shows a technical patent document featuring detailed diagrams and structured descriptions of an engineering system. It outlines the design, components, and functional relationships within the invention. Such patents are used to protect intellectual property and provide a precise blueprint of how a technology works, serving both legal and technical purposes.

Seller

F5yS...zrVM

Contract

3B6M...grrp

Created

Apr 6, 2026, 6:52 PM

Updated

Apr 6, 2026, 6:53 PM

Issuer

F5yS...zrVM

Enter Auction
Lot 03Bidding
EUV Power
Contract / H1tT...Kv9P

Contract / H1tT...Kv9P

EUV Power

This image shows ASML’s Extreme Ultraviolet (EUV) lithography system in a cleanroom environment. Engineers carefully operate and maintain the machine, which uses EUV light to etch incredibly small patterns onto silicon wafers. This cutting-edge technology enables the production of the most advanced microchips in the world, pushing the limits of precision, physics, and engineering.

Seller

F5yS...zrVM

Contract

H1tT...Kv9P

Created

Apr 6, 2026, 6:49 PM

Updated

Apr 6, 2026, 6:49 PM

Issuer

F5yS...zrVM

Enter Auction
Lot 04Bidding
Silent Smile
Contract / ApaV...P5cV

Contract / ApaV...P5cV

Silent Smile

Leonardo da Vinci’s Mona Lisa is one of the most iconic portraits in history. The painting captures a woman with an enigmatic smile that has fascinated viewers for centuries. Her calm expression, subtle gaze, and the mysterious landscape in the background create a sense of depth and intrigue. Da Vinci’s use of soft transitions between light and shadow, known as sfumato, gives the portrait a lifelike and almost surreal quality, making it timeless and endlessly captivating.

Seller

F5yS...zrVM

Contract

ApaV...P5cV

Created

Apr 6, 2026, 6:43 PM

Updated

Apr 6, 2026, 6:44 PM

Issuer

F5yS...zrVM

Enter Auction

Display logic

Public by default, private on completion

The storefront now reflects database-level filtering. Once settlement completes, the lot disappears from this surface and becomes visible only inside the authenticated winner’s profile.

Storefront query

status != completed

Marketplace reads only active lots so completed inventory is removed instantly after the cached protocol status updates.

Profile query

winner scoped

The profile route loads only lots where status is completed and the settled bidder matches the authenticated wallet.

Create flow

DB -> chain -> link

New lots are stored in Postgres first, initialized on Solana second, then linked back to the database record with the auction address.

Media storage

Base64 in Postgres

Images remain inside the relational model for MVP speed, avoiding external object storage while keeping the app deployable as a compact full-stack service.

Next step

Seller studio

Lot creation now lives behind Sign-In With Solana and uses the connected wallet both for the authenticated session and the on-chain initialization transaction.

Open Seller Studio

Connect Phantom or another Wallet Standard wallet.

Sign the nonce challenge to mint an authenticated session cookie.

Upload an image, write the title and description, and initialize the auction on chain.