Pith Number

pith:ILPINSNB

pith:2018:ILPINSNBVV7TVP5ZPD2F4SR6QL

not attested not anchored not stored refs pending

Superconductivity at 250 K in lanthanum hydride under high pressures

A. P. Drozdov, D. A. Knyazev, D. Graf, E. Greenberg, F. Balakirev, L. Balicas, M. A. Kuzovnikov, M. I. Eremets, M. Tkacz, P. P. Kong, S. Mozaffari, S. P. Besedin, V. B. Prakapenka, V. S. Minkov

arxiv:1812.01561 v1 · 2018-12-04 · 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{ILPINSNBVV7TVP5ZPD2F4SR6QL}

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	2026-05-17T23:43:04.165060Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

42de86c9a1ad7f3abfb978f45e4a3e82d6982eafd52a0f822d8fe89b111b5217

Aliases

arxiv: 1812.01561 · arxiv_version: 1812.01561v1 · doi: 10.48550/arxiv.1812.01561 · pith_short_12: ILPINSNBVV7T · pith_short_16: ILPINSNBVV7TVP5Z · pith_short_8: ILPINSNB

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/ILPINSNBVV7TVP5ZPD2F4SR6QL \
  | 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: 42de86c9a1ad7f3abfb978f45e4a3e82d6982eafd52a0f822d8fe89b111b5217

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "66839b35c79f4d93406c9f4d7981ce8bac9d7bc4b47d2ca0b871e936f61c5445",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "2018-12-04T17:59:40Z",
    "title_canon_sha256": "ca4cca3d52359a8578510a13bd865baa650b572fe9b40193f9b770aee0e295d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.01561",
    "kind": "arxiv",
    "version": 1
  }
}