generated: '2026-07-21'
method: searched
source: https://docs.toucan.earth/resources/archives
versioning:
  scheme: contract-upgrades
  notes: >-
    Toucan is smart-contract infrastructure; changes ship as audited contract
    upgrades rather than versioned REST APIs. Minor contract upgrades are
    reviewed pre-upgrade by the same security firms that audited the protocol.
  docs: https://docs.toucan.earth/resources/security
deprecation:
  policy_url: null
  notes: >-
    Deprecations are documented in the docs Archives section with historical
    documentation retained. The Verra Carbon Bridge is deprecated with its
    documentation archived; the NCT/BCT pool acceptance criteria are archived.
  deprecated_surfaces:
    - name: Verra Carbon Bridge
      status: deprecated
      docs: https://docs.toucan.earth/resources/archives/verra-bridge-deprecated
sla: null
status_page: null
open_source_transition:
  notes: Toucan documents a transition to open source for protocol components.
  docs: https://docs.toucan.earth/resources/frequently-asked-questions/faq-for-transition-to-open-source