Demonstration matrix
A mapping from EthSystems' Institutional Privacy Map to the proof-of-concepts this program builds. Each row names the map artifacts we answer, what we built, the current status, and where to read the detail. Status as of 2026-07-30.
What these are. Demo-grade evidence on fictional data, not product: no SLA, no certification, nothing here is a production service. The Graph indexes public chain state and adds no confidentiality of its own; read privacy does not exist on any of these paths. Every claim on every linked page is backed by an artifact someone re-ran, or is labelled as not yet run.
▶ Check any of this yourself, live
Open the verification page — it reads the bond's anchored commitments and roots straight off Ethereum Sepolia in your browser, and rebuilds the encrypted anchor stream from raw transaction calldata. No API key, no install, and nothing from The Graph in the trust path. Everything below is meant to be re-derivable without us; that page is where you re-derive it.
The matrix
| Item | EthSystems artifact(s) it answers | What we built | Status | Read | Verify live |
|---|---|---|---|---|---|
| 01 | use-cases/private-bonds.md · pattern-l2-encrypted-offchain-audit · pattern-reproducible-audit-extraction (ours, staged for contribution on our fork — not yet theirs) | EthSystems' private-bond PoC (deployed unmodified at pin 94f1e5c) on Ethereum Sepolia; subgraph via call handlers; bond-replay auditor CLI with EIP-712 attestation verification and root reconciliation |
live — single indexer | Private-bond audit replay | ▶ check the bond |
| 02 | pattern-l2-encrypted-offchain-audit · pattern-compliance-monitoring | AnchorDataEdge no-op contract (pure-calldata anchoring); subgraph via call handlers; completeness-checker CLI with disclosure reconciliation and chain cross-check |
live — single indexer | Encrypted anchor stream | ▶ rebuild the stream |
| 03 | pattern-reproducible-audit-extraction (ours, staged for contribution on our fork — not yet theirs) (verify-the-extraction leg) | Spec verified: Firehose-powered re-execution test with veemon verification; mainnet fixtures, then Sepolia testnet | spec-only | No page yet — spec held in the program repo, not public | — |
| 04 | use-cases/private-stablecoins.md · the shielding pattern family (pattern-shielding, pattern-private-stablecoin-shielded-payments) · pattern-compliance-monitoring | Spec verified: shielded-pool public-surface monitor; local + network POI cross-check | spec-only | No page yet — spec held in the program repo, not public | — |
| 05 | use-cases/private-registry.md (Problem 3) · crypto-registry-bridge-ewpg-eas | Spec verified: registry integrity view (eWpG/MiCA statutory seam) | spec-only | No page yet — spec held in the program repo, not public | — |
| 06 | use-cases/private-read.md · pattern-private-information-retrieval · rfp-private-reads | Spec verified: Private Reads service design (horizontal layer under items 01–05; L0 kit build pending) | spec-only | No page yet — spec held in the program repo, not public | — |
| — | (internal) | veemon fix branches on p-diogo/veemon fork | upstream fix branches | No page — code in https://github.com/p-diogo/veemon | — |
How to read status
- live — single indexer: Contracts on Sepolia, subgraph published to the decentralized network and serving attested responses through the gateway. One indexer serves it today; two unrelated staked indexers is the bar for independent serving, and it is not met.
- spec-only: Design is frozen and verified; implementation is pending (tranche 2).
- upstream fix branches: Verified fixes to open-source tooling, unmerged. Not a deployment and not a service — anyone runs this tooling themselves.
Nothing here states what we have not run ourselves. The honesty rules that bind every row — The Graph is a read and audit path, not a privacy technology; attestations are signatures, not validity proofs; completeness is bounded by what the chain records; read privacy does not exist today — are set out in full on each page's Honest limits section.
Links
- EthSystems Institutional Privacy Map — source use-cases, patterns, and RFPs
- graph-privacy-showcase-demos — the code: both auditor CLIs, the subgraph sources, the canonical address book, and each item's
REPRODUCE.md