Pith Number

pith:7K7CPC2I

pith:2008:7K7CPC2IXK4OG5QLSVW4JPIUBZ

not attested not anchored not stored refs pending

Nodal Gap in Fe-Based Layered Superconductor LaO_0.9F_{0.1-delta}FeAs Probed by Specific Heat Measurements

Cong Ren, Gang Mu, Hai-Hu Wen, Lei Fang, Lei Shan, Xiyu Zhu

arxiv:0803.0928 v2 · 2008-03-06 · cond-mat.supr-con

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7K7CPC2IXK4OG5QLSVW4JPIUBZ}

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	2026-05-18T03:25:16.508307Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fabe278b48bab8e3760b956dc4bd140e764018a7bba52839c10d039d0e7eadca

Aliases

arxiv: 0803.0928 · arxiv_version: 0803.0928v2 · doi: 10.48550/arxiv.0803.0928 · pith_short_12: 7K7CPC2IXK4O · pith_short_16: 7K7CPC2IXK4OG5QL · pith_short_8: 7K7CPC2I

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/7K7CPC2IXK4OG5QLSVW4JPIUBZ \
  | 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: fabe278b48bab8e3760b956dc4bd140e764018a7bba52839c10d039d0e7eadca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da225443f6fba6815ac85c971f940319208aefd3df7902ff00bd971d1d3d2ce2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "2008-03-06T17:56:47Z",
    "title_canon_sha256": "5fe9fff0ef5af1cddf7c331b4d2dc599ba2bd602a68a87c66ead40f18c651689"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0803.0928",
    "kind": "arxiv",
    "version": 2
  }
}