Pith Number

pith:UOCKH2RS

pith:2018:UOCKH2RSMW4KDOYHHVXG5VPMS4

not attested not anchored not stored refs pending

Superconductivity in potassium-doped 2,2$'$-bipyridine

An-Jun Qin, Kai Zhang, Ren-Shu Wang, Xiao-Jia Chen

arxiv:1801.06320 v2 · 2018-01-19 · 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{UOCKH2RSMW4KDOYHHVXG5VPMS4}

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	2026-05-18T00:25:11.120513Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a384a3ea3265b8a1bb073d6e6ed5ec970b94d078d3094e94b7ebd0b61a79f8bf

Aliases

arxiv: 1801.06320 · arxiv_version: 1801.06320v2 · doi: 10.48550/arxiv.1801.06320 · pith_short_12: UOCKH2RSMW4K · pith_short_16: UOCKH2RSMW4KDOYH · pith_short_8: UOCKH2RS

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/UOCKH2RSMW4KDOYHHVXG5VPMS4 \
  | 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: a384a3ea3265b8a1bb073d6e6ed5ec970b94d078d3094e94b7ebd0b61a79f8bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "58bf25cc0ca8a45db830837dec23a11cf6a3f2ce9a37cb29abeed22d688cc5f2",
    "cross_cats_sorted": [
      "cond-mat.mtrl-sci"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "2018-01-19T07:08:24Z",
    "title_canon_sha256": "430a540f8b9be06e2bdc1b89998e7309db852e5edeb7b4692fd3e303967323a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.06320",
    "kind": "arxiv",
    "version": 2
  }
}