Pith Number

pith:WSV5QJLK

pith:2018:WSV5QJLKOF674J6TAS7PVLZ4HY

not attested not anchored not stored refs pending

Evidence for negative thermal expansion in the superconducting precursor phase SmFeAsO

B.S. Conner, C.R. Wiebe, D.F. Fang, G. Wu, H. Chen, H.D. Zhou, L. Balicas, P.M. Sarte, R.H. Liu, T. Wu, X.H. Chen

arxiv:1802.08648 v1 · 2018-02-23 · cond-mat.supr-con

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

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	2026-05-18T00:22:40.924943Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4abd8256a717dfe27d304befaaf3c3e0c6669e79051a77595c144af9e66ea28

Aliases

arxiv: 1802.08648 · arxiv_version: 1802.08648v1 · doi: 10.48550/arxiv.1802.08648 · pith_short_12: WSV5QJLKOF67 · pith_short_16: WSV5QJLKOF674J6T · pith_short_8: WSV5QJLK

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/WSV5QJLKOF674J6TAS7PVLZ4HY \
  | 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: b4abd8256a717dfe27d304befaaf3c3e0c6669e79051a77595c144af9e66ea28

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15938fdf27cc70cbf6e57be88b644334a3090cde2aeda4799042b0aff9d012e1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "2018-02-23T17:27:27Z",
    "title_canon_sha256": "5ae462eea1d9730492d78110c99ea82b0f2b571201c12615ee4f59742841f54e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.08648",
    "kind": "arxiv",
    "version": 1
  }
}