Pith Number

pith:Q2VHNXRW

pith:2014:Q2VHNXRWGEXBYOFGT4N4FG4K2A

not attested not anchored not stored refs pending

Performance Comparison of LDPC Block and Spatially Coupled Codes over GF(q)

Daniel J. Costello Jr, David G. M. Mitchell, Kechao Huang, Lai Wei, Xiao Ma

arxiv:1408.2621 v1 · 2014-08-12 · 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{Q2VHNXRWGEXBYOFGT4N4FG4K2A}

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	2026-05-18T02:45:22.667845Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86aa76de36312e1c38a69f1bc29b8ad00c12f9389beeb741fea9ecf24d13258d

Aliases

arxiv: 1408.2621 · arxiv_version: 1408.2621v1 · doi: 10.48550/arxiv.1408.2621 · pith_short_12: Q2VHNXRWGEXB · pith_short_16: Q2VHNXRWGEXBYOFG · pith_short_8: Q2VHNXRW

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/Q2VHNXRWGEXBYOFGT4N4FG4K2A \
  | 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: 86aa76de36312e1c38a69f1bc29b8ad00c12f9389beeb741fea9ecf24d13258d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "252c6d711bfc481476f988a0256f76f2e4a693f83c3a4dee11f76c9b48543bbb",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2014-08-12T05:18:31Z",
    "title_canon_sha256": "a7860821c365b11cc36c89fa94f8cc7e16dc9a92aef3e3681f86478056f91381"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.2621",
    "kind": "arxiv",
    "version": 1
  }
}