Pith Number

pith:HVQK572O

pith:2009:HVQK572OASWV7UXS73Y4V3KQIB

not attested not anchored not stored refs pending

The role of hydrogen in room-temperature ferromagnetism at graphite surfaces

A. Setzer, D. Spemann, E. Arenholz, H. Ohldag, M. Rothermel, P. Esquinazi, T. Butz

arxiv:0905.4315 v2 · 2009-05-27 · cond-mat.mtrl-sci · cond-mat.other

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HVQK572OASWV7UXS73Y4V3KQIB}

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	2026-05-18T02:13:31.753954Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d60aeff4e04ad5fd2f2fef1caed504056c3325817fa24607e3a3705aba84624

Aliases

arxiv: 0905.4315 · arxiv_version: 0905.4315v2 · doi: 10.48550/arxiv.0905.4315 · pith_short_12: HVQK572OASWV · pith_short_16: HVQK572OASWV7UXS · pith_short_8: HVQK572O

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/HVQK572OASWV7UXS73Y4V3KQIB \
  | 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: 3d60aeff4e04ad5fd2f2fef1caed504056c3325817fa24607e3a3705aba84624

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ebbf91a80ce4bf33656fb24e748b4aab660dcbad524d6faefe8b5052544b416a",
    "cross_cats_sorted": [
      "cond-mat.other"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2009-05-27T02:03:37Z",
    "title_canon_sha256": "b1689a48e9cd7abb79db085fc83b50710f5da391dc506b6dd37346f6da07d3a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.4315",
    "kind": "arxiv",
    "version": 2
  }
}