Pith Number

pith:H47HKTDO

pith:2017:H47HKTDOOPNODHQ4ELGWR2FFH3

not attested not anchored not stored refs pending

Improved User-Private Information Retrieval via Finite Geometry

Camilla Hollanti, Eric Swartz, Guillermo Nu\~nez Ponasso, Marcus Greferath, Oliver Gnilke, Padraig \'O Cath\'ain

arxiv:1707.01551 v1 · 2017-07-05 · cs.IT · math.CO · math.IT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H47HKTDOOPNODHQ4ELGWR2FFH3}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:40:48.208536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f3e754c6e73dae19e1c22cd68e8a53ef537a3f55044968f829819a9a643857a

Aliases

arxiv: 1707.01551 · arxiv_version: 1707.01551v1 · doi: 10.48550/arxiv.1707.01551 · pith_short_12: H47HKTDOOPNO · pith_short_16: H47HKTDOOPNODHQ4 · pith_short_8: H47HKTDO

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/H47HKTDOOPNODHQ4ELGWR2FFH3 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 3f3e754c6e73dae19e1c22cd68e8a53ef537a3f55044968f829819a9a643857a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90780b8274f081f918bbef6f12297abc11cd7bbcd84b24c004fbb2300f3b64d1",
    "cross_cats_sorted": [
      "math.CO",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2017-07-05T19:33:40Z",
    "title_canon_sha256": "3338603b0d2053b51be7f5255206ae5a014780521cc5b7cb5a51beaf55d391c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.01551",
    "kind": "arxiv",
    "version": 1
  }
}