Pith Number

pith:IIQX3YYX

pith:2019:IIQX3YYXI4WG7UVFYLMQ65DNO4

not attested not anchored not stored refs pending

Entropic elasticity and negative thermal expansion in a simple cubic crystal

Alexei Tkachenko, Brent Fultz, David Wendt, Emil Bozin, Igor Zaliznyak, Joerg Neuefeind, Katharine Page, Limin Wang, Wei Ku

arxiv:1906.05213 v1 · 2019-06-12 · cond-mat.mtrl-sci · cond-mat.soft · cond-mat.stat-mech

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IIQX3YYXI4WG7UVFYLMQ65DNO4}

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	2026-07-05T00:16:35.125771Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

42217de317472c6fd2a5c2d90f746d7717daffd620101f2a13d9135bd66e22d0

Aliases

arxiv: 1906.05213 · arxiv_version: 1906.05213v1 · doi: 10.48550/arxiv.1906.05213 · pith_short_12: IIQX3YYXI4WG · pith_short_16: IIQX3YYXI4WG7UVF · pith_short_8: IIQX3YYX

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/IIQX3YYXI4WG7UVFYLMQ65DNO4 \
  | 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: 42217de317472c6fd2a5c2d90f746d7717daffd620101f2a13d9135bd66e22d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b92c361992d42058b03ea3f843c5e2cb55973edd5db101d0d7e871de3251c32d",
    "cross_cats_sorted": [
      "cond-mat.soft",
      "cond-mat.stat-mech"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2019-06-12T15:34:04Z",
    "title_canon_sha256": "173211ff7d2335b430512ef65e6b2b3cdebe04cf31a39aa12c5a086a293d3f85"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.05213",
    "kind": "arxiv",
    "version": 1
  }
}