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Market listing checklist

Exact-transfer requirement

TezFin's FA1.2 and FA2 markets update currentCash by the requested transfer amount. A listed underlying must therefore have exact-transfer semantics: a successful transfer of N units to a market must increase that market's balance by exactly N units.

Do not list a token that charges transfer fees, rebases during a transfer, credits a different amount through a callback, or otherwise mutates the market's balance as a side effect of transfer. Those tokens require a future market implementation that uses measured balance deltas instead of requested amounts.

Required approval record

Before supportMarket is run, governance must record the following in the deployment review:

  • exact token contract address and token ID (for FA2);
  • source-code or audited-contract revision reviewed;
  • a successful-transfer test showing sender debit and market credit are both exactly the requested amount;
  • confirmation that no transfer fee, transfer-time rebase, callback balance mutation, or upgrade path can change that behaviour; and
  • inclusion of the exact address, token standard, and FA2 token ID (when applicable) in postdeploy/config/config.json's exactTransferUnderlyings approvals. Native XTZ must be designated explicitly.

The post-deployment script refuses to list an asset when any approved field differs from the configured underlying. The approval is a deployment safeguard, not a substitute for the contract review above.

Current post-deployment underlyings

The checked-in post-deployment configuration lists only these underlyings:

Asset Underlying type Exact-transfer status
XTZ Native tez Exact by protocol: the attached mutez amount is the market credit.
USD Project FA1.2 test underlying Confirmed by the project reference FA1.2 transfer implementation: it debits and credits the requested amount with no fee or rebase.
USDT Project FA2 test underlying, token ID 0 Confirmed by the project reference FA2 transfer implementation: it debits and credits the requested amount with no fee or rebase.
TZBTC Project FA1.2 test underlying Confirmed by the project reference FA1.2 transfer implementation: it debits and credits the requested amount with no fee or rebase.

This confirmation applies to the project-managed contracts selected by the checked-in post-deployment configuration. A production deployment must repeat the approval record for its exact addresses; in particular, assets such as stXTZ are not approved by this checklist and must not be listed through this cash-accounting path without a fresh review.