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- Add OMNL/CBK Indonesia submission and audit binder docs, manifests, attestations - Add scripts/omnl transaction-package pipeline, LEI/PvP helpers, jq/lib fixtures - Update entity master data, MASTER_INDEX, TODOS, dbis-rail docs and rulebook - Add proof_package/regulatory skeleton and transaction package zip + snapshot JSON - validate-omnl-rail workflow, forge-verification-proxy tweak, .gitignore hygiene - Bump smom-dbis-138 (cronos verify docs/scripts) and explorer-monorepo (SPA + env report) Made-with: Cursor
51 lines
2.2 KiB
Markdown
51 lines
2.2 KiB
Markdown
---
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documentId: DBIS-SETTLEMENT-RULEBOOK
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title: DBIS Settlement Rulebook (HYBX / OMNL evidence)
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version: "1.0"
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status: operational-reference
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relatedSettlementRef: HYBX-BATCH-001
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relatedCycleId: DBIS-SET-HYBX-20260317-001
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network: DBIS Mainnet (ChainID 138)
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companionDocuments:
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- DBIS_RAIL_RULEBOOK_V1.md
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- DBIS_RAIL_TECHNICAL_SPEC_V1.md
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lastReviewed: "2026-03-17"
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---
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# DBIS Settlement Rulebook
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**Purpose:** Define settlement batch evidence, netting semantics, and **ledger row canonicalisation** used for Merkle proofs and regulatory packages (e.g. HYBX-BATCH-001).
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## 1. Scope
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- Applies to **DBIS clearing cycles** that settle through **OMNL** books (M1 liabilities, interoffice due-to/due-from).
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- Cross-references [DBIS Rail Rulebook v1](DBIS_RAIL_RULEBOOK_V1.md) for good funds, finality, and rail policy.
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## 2. Batch identity
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| Field | Description |
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|--------|-------------|
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| `settlementBatch` | Batch identifier (e.g. `HYBX-BATCH-001`). |
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| `settlementCycle` | Clearing cycle id (e.g. `DBIS-SET-HYBX-20260317-001`). |
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| `valueDate` | Business value date (UTC date string). |
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## 3. Netting report
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Multilateral net positions are reported per participant. For HYBX-BATCH-001 the beneficiary receives the net **credit** in USD; liquidity provider shows offsetting **debit** on OMNL; system net is zero.
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## 4. Annex B — Canonical line for Merkle leaves (CSV)
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**Input file:** UTF-8 CSV, LF line endings, header row present.
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**Leaf input:** Each **complete logical line** of the file (from first byte of the line through the line terminator excluded from hash input per generator: hash is `SHA-256(UTF-8 bytes of the line string without trailing newline on that line)`).
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**Ordering:** Leaves are taken in **file order** (top to bottom), including the header row as the first leaf.
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**Root:** Binary Merkle tree over leaf digests: `H(left || right)` with SHA-256; if odd count at a level, duplicate last node.
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**Verification:** Recompute leaves from the same CSV bytes, rebuild tree, compare root to published `merkle_root_HYBX-BATCH-001.txt`.
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## 5. Evidence retention
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Submitting institutions retain: CSV, Merkle log, generation tooling identity, and audit manifest binding file hashes to `HASH_NOTARIZATION_ANCHOR.txt` per package build procedure.
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