Pith Number

pith:QQESOITY

pith:2011:QQESOITYUFCBA7ICP35RTERFG6

not attested not anchored not stored refs pending

Extended Combinatorial Constructions for Peer-to-peer User-Private Information Retrieval

Colleen M. Swanson, Douglas R. Stinson

arxiv:1112.2762 v2 · 2011-12-13 · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QQESOITYUFCBA7ICP35RTERFG6}

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	2026-05-18T03:51:48.681650Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8409272278a144107d027efb19922537bc296c12a886b0a00a17541383da37a4

Aliases

arxiv: 1112.2762 · arxiv_version: 1112.2762v2 · doi: 10.48550/arxiv.1112.2762 · pith_short_12: QQESOITYUFCB · pith_short_16: QQESOITYUFCBA7IC · pith_short_8: QQESOITY

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/QQESOITYUFCBA7ICP35RTERFG6 \
  | 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: 8409272278a144107d027efb19922537bc296c12a886b0a00a17541383da37a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "872e16dd5f6107e66dc1015904048c322b51bb3659735bc0f91659ffdded17de",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2011-12-13T00:50:15Z",
    "title_canon_sha256": "43ba16b756be6ba7c49ffe4b479908397914d8ddff30e782b3c269de5f5f2dd0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.2762",
    "kind": "arxiv",
    "version": 2
  }
}