Pith Number

pith:L5CTXCBT

pith:2013:L5CTXCBT2COUFHEAP3HLBKQRSQ

not attested not anchored not stored refs pending

Polar Coding for Secret-Key Generation

Emmanuel Abbe, Matthieu R. Bloch, Remi A. Chou

arxiv:1305.4746 v4 · 2013-05-21 · 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{L5CTXCBT2COUFHEAP3HLBKQRSQ}

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	2026-05-18T01:35:43.757927Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f453b8833d09d429c807eceb0aa11940db28f139ca4309dbed6de2320200d63

Aliases

arxiv: 1305.4746 · arxiv_version: 1305.4746v4 · doi: 10.48550/arxiv.1305.4746 · pith_short_12: L5CTXCBT2COU · pith_short_16: L5CTXCBT2COUFHEA · pith_short_8: L5CTXCBT

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/L5CTXCBT2COUFHEAP3HLBKQRSQ \
  | 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: 5f453b8833d09d429c807eceb0aa11940db28f139ca4309dbed6de2320200d63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3a47af030821f3e1194e014807d14b0f07c47bb4dd2ed5d5e028d9e53c40f03",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-05-21T08:04:11Z",
    "title_canon_sha256": "34ca84d4f0be72342c571b9c99e7bf0a71d85bd68bc531192988f0a26fe61995"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.4746",
    "kind": "arxiv",
    "version": 4
  }
}