Pith Number

pith:RU4NZVJL

pith:2018:RU4NZVJLLKZXZWAHTOCT7XVBJN

not attested not anchored not stored refs pending

Superconductivity at 215 K in lanthanum hydride at high pressures

A. P. Drozdov, D. A. Knyazev, M. A. Kuzovnikov, M. I. Eremets, P. P. Kong, S. P. Besedin, V. S. Minkov

arxiv:1808.07039 v1 · 2018-08-21 · cond-mat.supr-con · cond-mat.mtrl-sci

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RU4NZVJLLKZXZWAHTOCT7XVBJN}

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	2026-05-18T00:07:38.310457Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d38dcd52b5ab37cd8079b853fdea14b4783b4a24289e1fde96213b8ad3b59db

Aliases

arxiv: 1808.07039 · arxiv_version: 1808.07039v1 · doi: 10.48550/arxiv.1808.07039 · pith_short_12: RU4NZVJLLKZX · pith_short_16: RU4NZVJLLKZXZWAH · pith_short_8: RU4NZVJL

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/RU4NZVJLLKZXZWAHTOCT7XVBJN \
  | 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: 8d38dcd52b5ab37cd8079b853fdea14b4783b4a24289e1fde96213b8ad3b59db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25e7873967448558319a9c9b1e9ae1c717a552b68f85dd0346038581062df0b5",
    "cross_cats_sorted": [
      "cond-mat.mtrl-sci"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "2018-08-21T17:50:00Z",
    "title_canon_sha256": "f1218085357c11b6f8246f354f4bd73e7bedc991f94a1ff14a1342b98ace6280"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.07039",
    "kind": "arxiv",
    "version": 1
  }
}