Prove

Prove dual-anchors trustworthy state to two ledgers: Polygon (a

public EVM chain) and nebulad (Nebula's own private chain).

What gets anchored

Every state change that has independent proof value: item

transitions, agreement revisions, adaptations, defect notices,

payment claim certifications, EOT decisions, baseline locks.

Anchor envelope

The v2 envelope (in src/lib/substrate/v2-event.ts) carries:

• The atom payload that's being anchored
• Structured edges to context atoms
• The signing key fingerprint
• A monotonic sequence within the project

The envelope hash is what goes on chain; the full payload stays in

Postgres.

Retry queue

Anchors are queued in AnchorJob and processed by the cron worker.

Failed jobs retry with exponential backoff up to 5 attempts; after

that they're marked DEAD and need admin attention.

Cross links

• /docs/concepts/chain: the dual-chain story end-to-end
• /docs/chain/anchors: anchor detail page tour
• /docs/chain/verifier: the CLI that verifies a proof bundle