Testnet beta

Human-to-human exchange is live on testnet

Trade onchain assets.Set your terms.

Barterium is the negotiated-exchange marketplace for the onchain economy — Base-first, agent-compatible. Barter, buy, or sell with USDC, another asset, or both—then approve the exact exchange yourself.

Open the exchange See how a deal works
Market
Human to Human
Routes
Cash · Barter · Mixed
Consent
Two wallets · One deal
Early access · 2 stepsJoin the front of the line$1 ticket · one per wallet · 777 total · early-access bids
  1. 00
    Connect walletReturning? We check onchain whether your ticket already waits here.
  2. 01
    Mint the Barterium TicketUSDC on Base · one per wallet · 72 hours or until 777 sell out.
    2d 15h 07m 32s left · or until sold out
CURRENT HOLDER UNLOCKSEARLY PROPOSALS
OPEN INTENT / WAW-01LIVE
I HAVEApartmentWarsaw · 146 m² · Tokenized title
01
I WOULD ACCEPT
01Smaller houseWithin 50 km of Warsaw
02320k stablecoinApplication-approved token
03House + adjustmentMixed settlement
OWNER KEEPS CUSTODYUNTIL SETTLEMENT
Asset for AssetAsset for StablecoinAsset + StablecoinHuman-approved settlement
01 / WHY BARTER

Price is only one acceptable outcome

Unique assets deserve a wider market.

A normal listing asks one question: “How much?” An intent can ask the better question: “What would make this exchange worthwhile?”

01
Pure barter

Asset for Asset

Money never has to enter the deal.

02
Direct sale

Asset for Stablecoin

A familiar route when price is enough.

03
Mixed terms

Asset + Stablecoin

Use an adjustment to close the value gap.

AN INTENT, NOT A SEARCH FILTER
“Find me anyone willing to trade my apartment for a smaller house within 50 km of Warsaw.”

The owner describes the outcome. The market discovers the route.

02 / ONE COMPLETE DEAL

Broad intent becomes exact consent

Explore first.
Commit only at the end.

  1. 01

    Publish possibilities

    List what you have and every outcome you would seriously consider—not one rigid asking price.

  2. 02

    Find compatible intent

    The market compares acceptable outcomes, so counterparties can discover deals ordinary filters miss.

  3. 03

    Resolve exact terms

    A proposal names the assets, amounts, parties, chain, contract, fees, and deadline.

  4. 04

    Approve and settle

    Both humans review the same transaction before the approved settlement contract can execute it.

03 / TRUST MODEL

Negotiation is not authorization

Your intent can be broad. Your consent stays exact.

Finding a match does not move an asset. Both parties approve the resolved proposal, including the chain and application-approved settlement contract.

DISCOVER

Intent engine

Describes offers, acceptable outcomes, constraints, owners, and negotiators across supported markets.

search · match · propose
ALLOW

Marketplace policy

Barterium restricts listed assets, mint addresses, chain adapters, and settlement contracts.

asset · adapter · contract
EXECUTE

Atomic settlement

The exact transfers execute together after both wallets authorize the same deal.

review · sign · settle
CHAIN-ISOLATED TESTNET MARKETS

No asset?
Start with ours.

Connect a testnet wallet, mint a valueless mock NFT, publish an intent, negotiate, and run the complete human-to-human exchange flow.

  1. 01Connect walletAuthenticate by signature
  2. 02Mint test assetsNFTs and stablecoins
  3. 03Make a dealConsent before settlement
Test the full exchange
Barterium — Trade what you own

The barter book is open

What do you have?
What would you take?

Launch Barterium