Pith Number

pith:O54IZHE3

pith:2012:O54IZHE3VYYU3FT45AD2BZJKX4

not attested not anchored not stored refs pending

Performance Analysis of Protograph-based LDPC Codes with Spatial Diversity

Francis C. M. Lau, Kai-Kit Wong, Lin Wang, PingPing Chen, Yi Fang

arxiv:1208.2394 v1 · 2012-08-12 · 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{O54IZHE3VYYU3FT45AD2BZJKX4}

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	2026-05-18T03:48:57.979016Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77788c9c9bae314d967ce807a0e52abf1e51c41a76e808796a4476f9dcd9612b

Aliases

arxiv: 1208.2394 · arxiv_version: 1208.2394v1 · doi: 10.48550/arxiv.1208.2394 · pith_short_12: O54IZHE3VYYU · pith_short_16: O54IZHE3VYYU3FT4 · pith_short_8: O54IZHE3

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/O54IZHE3VYYU3FT45AD2BZJKX4 \
  | 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: 77788c9c9bae314d967ce807a0e52abf1e51c41a76e808796a4476f9dcd9612b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08cfaccaf971bc767e39b97ef142d39a76f4e6894db28ee5e721d7ab1bbff12a",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2012-08-12T04:44:49Z",
    "title_canon_sha256": "411c4f80abce3cbf817763dcfd17e065d2cd715b53d8e5b6de44bb6b358f9cb8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.2394",
    "kind": "arxiv",
    "version": 1
  }
}