Stellar and the spokes

Corridor settles in one place. Stellar is the hub, anchors are the fiat spokes and they settle on the hub itself, so the common payout path has no bridge in it at all. Everything is reconciled by the same 32-byte Corridor Reference.

Stellar

Settlement hub. USDC balances, the reference carried whole in MEMO_HASH, 7-decimal amounts, a Horizon observer that resumes from a cursor.

Anchors

The fiat spokes. SEP-1, 10, 12, 38 and 31 behind one partner interface. Adding a corridor is a domain and an asset.

Partner interface

One shape for every provider. Six methods and a normalised order lifecycle, so an anchor and an off-Stellar partner are interchangeable to the legs.

CCTP

Inflows. USDC from Base and Solana by burn-and-mint, so no wrapped asset reaches the hub. Declared, not built.

Solana

The one spoke off the hub. Where the naira partner settles, until a licensed naira anchor is live on Stellar.

Base

An inflow source. USDC a customer already holds, brought to the hub.

What settles where

Role	Venue	Status
Customer balances, treasury, clearing	Stellar, in USDC	Running on testnet
Local currency in and out	Anchors, over SEP-31	Adapter built; no anchor signed
Naira payouts	A licensed partner on Solana	Carried over from the prototype; the hop to reach it is not built
USDC inflows	Base and Solana, over CCTP	Edges declared; the leg is not built

Networks and environments

	Testnet	Mainnet
Stellar	Test network, funded by Friendbot. Payments with references, read back off Horizon	Public network. Code paths identical; no run yet
Anchors	`MockPartner` with the same lifecycle and signed webhooks; `SepAnchor` against a stubbed anchor	None signed
CCTP	`bridge.simulated`, whose Stellar side is real	Leg not built
Solana	Devnet	Carried over from the prototype for the naira corridor
Base	Base Sepolia	Carried over from the prototype

Issuers and identifiers

An asset is its code and its issuer (ADR 0007).

Asset	Network	Issuer or mint
USDC	Stellar mainnet	`GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335X2KGX3IHOJAPP5RE34K4KZVN`
USDC	Stellar testnet	`GBBD47IF6LWK7P7MDEVSCWR7DPUWV3NY3DTQEVFL4NAT4AQH3ZLLFLA5`
EURC	Stellar mainnet	`GDHU6WRG4IEQXM5NZ4BMPKOXHW76MZM4Y2IEMFDVXBSDP6SJY4ITNPP2`
MGUSD, PYUSD, USDT	Stellar	Unset on purpose, until verified against each issuer’s own `stellar.toml`
USDC	Base	`0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`
USDC	Solana	`EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v`
USDC	Solana devnet	`4zMMC9srt5Ri5X14GAgXhaHii3GnPAEERYPJgZJDncDU`

Supply an issuer Corridor does not ship with CORRIDOR_STELLAR_ISSUER_<CODE>_<NETWORK>.