Pith Number

pith:H3BEQDLH

pith:2012:H3BEQDLHHZQKYJVALN73OJFLEP

not attested not anchored not stored refs pending

Construction and analysis of polar and concatenated polar codes: practical approach

Gregory Bonik, Nickolai Zamarashkin, Sergei Goreinov

arxiv:1207.4343 v1 · 2012-07-18 · 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{H3BEQDLHHZQKYJVALN73OJFLEP}

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	2026-05-18T03:50:46.953390Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ec2480d673e60ac26a05b7fb724ab23c8f5254cf4dc677ed6d15c5bc1e1db85

Aliases

arxiv: 1207.4343 · arxiv_version: 1207.4343v1 · doi: 10.48550/arxiv.1207.4343 · pith_short_12: H3BEQDLHHZQK · pith_short_16: H3BEQDLHHZQKYJVA · pith_short_8: H3BEQDLH

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/H3BEQDLHHZQKYJVALN73OJFLEP \
  | 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: 3ec2480d673e60ac26a05b7fb724ab23c8f5254cf4dc677ed6d15c5bc1e1db85

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8568989bb664ac5e82323541d84a525697f46e1032339f736dbbb31c774ac4b",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2012-07-18T11:17:39Z",
    "title_canon_sha256": "2f50bda98c39e7e74ee7ccc582598fb6b8484f9622c3c64327b9ac3420a2e2e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.4343",
    "kind": "arxiv",
    "version": 1
  }
}