Pith Number

pith:4IHOULJR

pith:2019:4IHOULJRO5MMGOSVX2RPCHZZWJ

not attested not anchored not stored refs pending

Design of Protograph Codes for Additive White Symmetric Alpha-Stable Noise Channels

Kui Cai, PingPing Chen, Xingwei Zhong, Zhen Mei

arxiv:1904.13245 v1 · 2019-04-30 · 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{4IHOULJRO5MMGOSVX2RPCHZZWJ}

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	2026-05-17T23:47:21.825532Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e20eea2d317758c33a55bea2f11f39b2698a79024c5e7717bb2181d0a6ac7a88

Aliases

arxiv: 1904.13245 · arxiv_version: 1904.13245v1 · doi: 10.48550/arxiv.1904.13245 · pith_short_12: 4IHOULJRO5MM · pith_short_16: 4IHOULJRO5MMGOSV · pith_short_8: 4IHOULJR

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/4IHOULJRO5MMGOSVX2RPCHZZWJ \
  | 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: e20eea2d317758c33a55bea2f11f39b2698a79024c5e7717bb2181d0a6ac7a88

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0d31678403833ad5a79cd4d003c0cea82ae3530af446c74161aad5c2309b6304",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-04-30T13:49:11Z",
    "title_canon_sha256": "a9b4c29525a6dc4bd2157e68cfce27984bc4157f7f928601e8facd5736cb5aea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.13245",
    "kind": "arxiv",
    "version": 1
  }
}