Pith Number

pith:Q4Z2TTLP

pith:2018:Q4Z2TTLPSPDUZRCWS2GVEUSV4F

not attested not anchored not stored refs pending

Superconductivity of platinum hydride

Katsuya Shimizu, Kazushi Takahama, Keiji Kuno, Masahiro Hishida, Naohisa Hirao, Shigeo Sasaki, Takahiro Matsuoka, Yasuo Ohishi

arxiv:1810.08191 v1 · 2018-10-18 · 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{Q4Z2TTLPSPDUZRCWS2GVEUSV4F}

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	2026-05-17T23:47:59.349398Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8733a9cd6f93c74cc456968d525255e15e176fc8249fe692ed6f9f8909ce41d5

Aliases

arxiv: 1810.08191 · arxiv_version: 1810.08191v1 · doi: 10.48550/arxiv.1810.08191 · pith_short_12: Q4Z2TTLPSPDU · pith_short_16: Q4Z2TTLPSPDUZRCW · pith_short_8: Q4Z2TTLP

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/Q4Z2TTLPSPDUZRCWS2GVEUSV4F \
  | 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: 8733a9cd6f93c74cc456968d525255e15e176fc8249fe692ed6f9f8909ce41d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7967869868f9cd7a3b0fd1577e81f06c457b41c2ec3cfc7debefa69d26c77116",
    "cross_cats_sorted": [
      "cond-mat.mtrl-sci"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "2018-10-18T17:58:08Z",
    "title_canon_sha256": "866dc6e869756236cd8dc9db84fcd0be27805b624f5b90cec3c7bfc23a0e6a8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.08191",
    "kind": "arxiv",
    "version": 1
  }
}