Pith Number

pith:YY556BSY

pith:2015:YY556BSYCX7XXEICITXENII2IZ

not attested not anchored not stored refs pending

Challenges and some new directions in channel coding

Erdal Arikan, Guido Montorsi, Jossy Sayir, Michael Lentmaier, Najeeb ul Hassan

arxiv:1504.03916 v1 · 2015-04-15 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YY556BSYCX7XXEICITXENII2IZ}

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

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	2026-05-18T02:18:41.684156Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c63bdf065815ff7b910244ee46a11a467504861d7f79c5b832f3c7eb801d0a9f

Aliases

arxiv: 1504.03916 · arxiv_version: 1504.03916v1 · doi: 10.48550/arxiv.1504.03916 · pith_short_12: YY556BSYCX7X · pith_short_16: YY556BSYCX7XXEIC · pith_short_8: YY556BSY

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/YY556BSYCX7XXEICITXENII2IZ \
  | 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: c63bdf065815ff7b910244ee46a11a467504861d7f79c5b832f3c7eb801d0a9f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "484c6d94bf712e004ddb702bb6ab042f7eebfd8ec26643da0b5af98f8f709bd8",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-04-15T13:58:17Z",
    "title_canon_sha256": "830f7b3d406844440f37f21f06b2ab111fedbb25d2fd3ac8d04c7d10cfd8275e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.03916",
    "kind": "arxiv",
    "version": 1
  }
}