zk-query-proofs SKILL.md skillA
zk-query-proofs from sparq-org/sparq is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add sparq-org/sparq/zk-query-proofs@git:20261103.fa47e08Pins git:20261103.fa47e08 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- sparq-org/sparq
- Path
skills/zk-query-proofs/SKILL.md- Versions recorded
- 24
- Latest version
- git:20261103.fa47e08, committed Nov 3, 2026
- First version recorded
- Aug 1, 2026
- Size
- 164,980 bytes
- Repository stars
- 13
- License
- MIT
Prove and verify a SPARQL query result over committed RDF Verifiable Credentials in zero knowledge with sparq-zk + sparq-zk-compose — per-graph Poseidon2 commitments, BGP scan + integer FILTER Noir proofs, issuer Schnorr attestation (incl. hidden-key set membership), status-list revocation (clear- or hidden-index), verifier nonces / single-use replay defence, and the ProofManifest/circuit family. Use when building or driving the zk-query-proofs surface…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# sparq-zk-query-proofs
Zero-knowledge proofs that a SPARQL query result is correct over RDF held in named-graph Verifiable Credentials. **`sparq-zk`** (stage 1) canonicalizes (RDFC10) and commits each named graph to a Poseidon2-BN254 commitment `C(G)`, encodes terms, and signs commitments with a Schnorr-over-Baby-JubJub issuer key. **`sparq-zk-compose`** (stage 2) builds per-property Noir circuit inputs (BGP **scan** + hidden-operand integer **FILTER**), drives `nargo`/`bb` to produce/verify proofs, and bundles everything into a serializable `ProofManifest` that a relying party verifies against its own trust anchors (issuer key-set, status list, fresh nonce).
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…Read the whole file at its exact version.
How to install
mdr add sparq-org/sparq/zk-query-proofs@sha256:9d06485dba435fa5The line at the top of this page pins the label git:20261103.fa47e08, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_egk2leviz35r64lu)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 24 versions of this file, between Aug 1, 2026 and Nov 3, 2026, about one every 4 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261103.fa47e08 latest | 2026-11-03 | fa47e08 | 164,980 B | A | view · diff |
| git:20261026.edbe5a6 | 2026-10-26 | edbe5a6 | 163,894 B | A | view · diff |
| git:20261026.02e2f37 | 2026-10-26 | 02e2f37 | 162,622 B | A | view · diff |
| git:20261026.a5244ee | 2026-10-26 | a5244ee | 162,030 B | A | view · diff |
| git:20261026.202d613 | 2026-10-26 | 202d613 | 160,675 B | A | view · diff |
| git:20261026.6c30171 | 2026-10-26 | 6c30171 | 167,203 B | A | view · diff |
| git:20261018.152cd2d | 2026-10-18 | 152cd2d | 169,764 B | A | view · diff |
| git:20261018.1e47b9a | 2026-10-18 | 1e47b9a | 161,404 B | A | view · diff |
| git:20261018.028b4e7 | 2026-10-18 | 028b4e7 | 160,500 B | A | view · diff |
| git:20261017.3927a91 | 2026-10-17 | 3927a91 | 157,206 B | A | view · diff |
| git:20261017.ae4a44e | 2026-10-17 | ae4a44e | 155,548 B | A | view · diff |
| git:20261015.d2d045a | 2026-10-15 | d2d045a | 154,201 B | A | view · diff |
| git:20261015.070a21c | 2026-10-15 | 070a21c | 153,569 B | A | view · diff |
| git:20261015.6664717 | 2026-10-15 | 6664717 | 152,998 B | A | view · diff |
| git:20261015.34b280c | 2026-10-15 | 34b280c | 149,927 B | A | view · diff |
| git:20261014.072aa5b | 2026-10-14 | 072aa5b | 139,060 B | A | view · diff |
| git:20261013.1f143e9 | 2026-10-13 | 1f143e9 | 122,234 B | A | view · diff |
| git:20261009.21f6380 | 2026-10-09 | 21f6380 | 122,042 B | A | view · diff |
| git:20261009.f0b870d | 2026-10-09 | f0b870d | 95,491 B | A | view · diff |
| git:20260903.1a63aa7 | 2026-09-03 | 1a63aa7 | 94,217 B | A | view · diff |
| git:20260801.d81f0e3 | 2026-08-01 | d81f0e3 | 94,213 B | A | view · diff |
| git:20260801.5605361 | 2026-08-01 | 5605361 | 93,714 B | A | view · diff |
| git:20260801.6d8b1f1 | 2026-08-01 | 6d8b1f1 | 89,905 B | A | view · diff |
| git:20260801.be770e7 | 2026-08-01 | be770e7 | 88,192 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (164980 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
sparq-org/sparq · 13 stars · license MIT · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_egk2leviz35r64lu GET https://markdownregistry.com/api/v1/resolve?ref=sparq-org/sparq/zk-query-proofs GET https://markdownregistry.com/api/v1/blob/9d06485dba435fa5ea32214bd15b374d8c1fd91878681c9c934704d56b75092b
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