Pith Number

pith:OCOKQGMR

pith:2022:OCOKQGMRIKSHQE5XOPA3D463GR

not attested not anchored not stored refs pending

Superconductivity above 80 K in polyhydrides of hafnium

B. S. Min, C.L. Zhang, C. Q. Jin, H. Z. Liu, J.F. Zhao, J. Zhang, K. Lu, L.C. Shi, L.H. Wang, R.C. Yu, S. Chariton, S.J. Zhang, S.M. Feng, V. B. Prakapenka, X.C. Wang, X. He, Y. Peng, Z.W. Li

arxiv:2208.05816 v2 · 2022-08-11 · 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{OCOKQGMRIKSHQE5XOPA3D463GR}

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	2026-07-05T04:50:19.487118Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

709ca8199142a47813b773c1b1f3db344a5a202d43fa40f8c72541e2db9f6b60

Aliases

arxiv: 2208.05816 · arxiv_version: 2208.05816v2 · doi: 10.48550/arxiv.2208.05816 · pith_short_12: OCOKQGMRIKSH · pith_short_16: OCOKQGMRIKSHQE5X · pith_short_8: OCOKQGMR

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/OCOKQGMRIKSHQE5XOPA3D463GR \
  | 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: 709ca8199142a47813b773c1b1f3db344a5a202d43fa40f8c72541e2db9f6b60

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c4e0df65da0efa6a557124f9e7738ae7406b0f8fb5a12d0d81230d3c3a17843",
    "cross_cats_sorted": [
      "cond-mat.mtrl-sci"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "2022-08-11T13:25:33Z",
    "title_canon_sha256": "b8b28fd9b621bbc521ee656b6333d1178b7755aaadf01ddbbc93fdee4b472cab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2208.05816",
    "kind": "arxiv",
    "version": 2
  }
}