Pith Number

pith:D6CW44ZW

pith:2015:D6CW44ZWTKQHS77GWTJUMVNFV3

not attested not anchored not stored refs pending

Density Evolution Analysis of Spatially Coupled LDPC Codes Over BIAWGN Channel

Gottfried Lechner, Khoa D. Nguyen, Md. Noor-A-Rahim

arxiv:1510.04763 v1 · 2015-10-16 · 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{D6CW44ZWTKQHS77GWTJUMVNFV3}

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	2026-05-18T01:30:01.517826Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f856e73369aa0797fe6b4d34655a5aef4d756c1a3111753d6997106b23cc080

Aliases

arxiv: 1510.04763 · arxiv_version: 1510.04763v1 · doi: 10.48550/arxiv.1510.04763 · pith_short_12: D6CW44ZWTKQH · pith_short_16: D6CW44ZWTKQHS77G · pith_short_8: D6CW44ZW

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/D6CW44ZWTKQHS77GWTJUMVNFV3 \
  | 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: 1f856e73369aa0797fe6b4d34655a5aef4d756c1a3111753d6997106b23cc080

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd67872b438e320486788235038ab660f00a1e2051a9ac2ca1a876f534296835",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-10-16T02:28:41Z",
    "title_canon_sha256": "a80b97e4f542627609026ab66dd4aa791699493b5af540e807be7e6e11bddbf5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.04763",
    "kind": "arxiv",
    "version": 1
  }
}