Pith Number

pith:LEQ7DGPD

pith:2018:LEQ7DGPDUE2GOQNNBVFUAMQMHA

not attested not anchored not stored refs pending

Privacy in Index Coding: $k$-Limited-Access Schemes

Christina Fragouli, Linqi Song, Martina Cardone, Mohammed Karmoose

arxiv:1809.08263 v1 · 2018-09-21 · cs.IT · 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{LEQ7DGPDUE2GOQNNBVFUAMQMHA}

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	2026-05-18T00:05:08.993451Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5921f199e3a1346741ad0d4b40320c383122f799d0be0a389cdf2e2736492a7f

Aliases

arxiv: 1809.08263 · arxiv_version: 1809.08263v1 · doi: 10.48550/arxiv.1809.08263 · pith_short_12: LEQ7DGPDUE2G · pith_short_16: LEQ7DGPDUE2GOQNN · pith_short_8: LEQ7DGPD

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/LEQ7DGPDUE2GOQNNBVFUAMQMHA \
  | 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: 5921f199e3a1346741ad0d4b40320c383122f799d0be0a389cdf2e2736492a7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aaf74729fb8afe57d7606bf015dbee3af1d5300afbeb0cb72feb3ddb9fea6305",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-09-21T18:12:58Z",
    "title_canon_sha256": "f990557d10985253a422192cb89b1c5be89f2c65d67b3f25f2389d086f1a7209"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.08263",
    "kind": "arxiv",
    "version": 1
  }
}