Coinbase Bazaar is the official Coinbase-curated x402 catalog. Ontario Protocol is an independent x402 marketplace with first-party paid endpoints (trust scans, reputation), a public 1.5% take-rate ledger on third-party listings, and Bazaar-compatible manifests.
List on both. Bazaar gives you Coinbase distribution; Ontario gives you a publicly auditable take-rate ledger and complementary first-party services like agent trust scans.
Ontario publishes Bazaar-compatible manifests for verified listings, so dual-listing can be part of the normal operator workflow without exposing internal regeneration controls.