The debtor is bound to effect performance only in exchange for the instrument.
Civil Act — Article 519 (Performance and delivery of instrument)
민법 제519조
For AI agents and developers — get this article as JSON, with the English and current Korean effective dates and an outdated-translation flag, from the korea-law API or as an MCP tool:
https://mcp.apify.com?tools=kr-data/korea-law