Pith Number

pith:UHHR7PDB

pith:2012:UHHR7PDBI7IV5PU4YNXSASYL7Y

not attested not anchored not stored refs pending

Structure, bonding, and hardness of CrB$_4$: a superhard material?

Aleksey N. Kolmogorov, Dianzhong Li, Haiyang Niu, Jiaqi Wang, Petr Lazar, Raimund Podloucky, Xing-Qiu Chen, Yiyi Li

arxiv:1203.6470 v1 · 2012-03-29 · 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{UHHR7PDBI7IV5PU4YNXSASYL7Y}

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	2026-05-18T03:59:02.407247Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1cf1fbc6147d15ebe9cc36f204b0bfe3ec2298bc80c7fc61f834fef43b07b8d

Aliases

arxiv: 1203.6470 · arxiv_version: 1203.6470v1 · doi: 10.48550/arxiv.1203.6470 · pith_short_12: UHHR7PDBI7IV · pith_short_16: UHHR7PDBI7IV5PU4 · pith_short_8: UHHR7PDB

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/UHHR7PDBI7IV5PU4YNXSASYL7Y \
  | 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: a1cf1fbc6147d15ebe9cc36f204b0bfe3ec2298bc80c7fc61f834fef43b07b8d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c327a7eefba6733f0d0f3bb4bfea1e6dd4d6cc0c323db41f284157e4f9c910d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2012-03-29T09:03:55Z",
    "title_canon_sha256": "aa998bac2cec3195cd5d65828556177df5d11c8d3eb88d0138c57bea3f953e26"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.6470",
    "kind": "arxiv",
    "version": 1
  }
}