A debt instrument in which a portion of investor returns is contingent on independently verified ecological or social outcomes. The base coupon behaves like a standard investment-grade note and is settled from the issuer’s balance sheet. A performance premium is settled by outcomes funders (development finance institutions, foundations, corporate ESG allocators) only when an independent verification agent confirms that the contracted outcome has been produced.

The instrument’s diagnostic property, in TIME terms, is that it splits a promise the +I-form and +M-form can no longer keep alone. The base tier remains a conventional +M promise from an issuer with control over its balance sheet. The premium tier is contingent on outcomes produced by a coordination pattern the issuer does not control, and settles through a third party. The bond is the settlement layer for a promise the +I and +M forms have restructured as an external claim on ecological or social work happening elsewhere.

Extended treatment

  • Performance-Based Water Bonds — the concept page. Uses the Cape Water Performance-Based Bond (FR31PB, JSE-listed 17 April 2026) as the working case, reads the split-coupon structure through Promise Theory, and sets out why the instrument is the first key financial mechanism through which a BioHub can convert restored catchment yield into a bankable revenue stream.

Provenance

Initial entry extracted from the BioHub Glossary CSV export (Notion, August 2026); expanded 6 September 2026 to add the split-promise reading, cross-links to the concept page, and the connection to Promise Theory, TIME, and the Emancipation Architecture. The technical definition follows standard capital-markets usage; the diagnostic reading is wiki-native and belongs on the concept page.