OpenChainGraph · CRY-04 · Wave 3 · Zero-Egress

Merkle Batch Verifier

Batch-verifies SHA-256 Merkle inclusion proofs for payment batches, settlement sets, and ISO 20022 message streams. Detects tampered or misrouted transactions before settlement finality. Exports an AP2 cryptographic_mandate artifact. DORA Art.12 · BIS CPMI PFMI Principle 9.

v1.0.0 cryptographic_mandate SHA-256 Wave 3 Zero-Egress AP2 Export
🔒 All inputs are processed locally in your browser. No data is transmitted. Do not enter real personal data — use synthetic or anonymised inputs only.
No upstream chain detected.
Preset
Payment Batch
SWIFT/SEPA batch settlement. All proofs valid — baseline integrity check.
32 leaves · depth 5
Settlement Check
CSD settlement batch with 3 tampered transaction hashes.
16 leaves · 3 tampered
ISO 20022
pacs.008 message stream batch. All valid, shallow depth.
8 leaves · depth 3
Custom
Paste your own Merkle root and proof entries JSON array.
User-provided
The expected tree root. Must be 64 hex characters (no 0x prefix).
Each entry: {"leaf":"hex64","index":N,"proof":["hex64",...]}. Leaf and proof elements must be 64-char lowercase hex.
Loading preset…
Batch Verdict
Leaf Status Gridone cell per leaf in batch order
Verified Failed Invalid
Summary & Depth Distribution
Proof Detail
# Leaf Hash Depth Status Reconstructed Root
Export