Pith Number

pith:Q4PD2EGC

pith:2010:Q4PD2EGCEKCNLQ453NINXWIVC5

not attested not anchored not stored refs pending

The FERRUM project: laboratory-measured transition probabilities for Cr II

H. Lundberg, H. Nilsson, J. Gurell, K.E. Nielsen, L. Engstrom, R. Blackwell-Whitehead, S. Mannervik

arxiv:1001.2139 v1 · 2010-01-13 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q4PD2EGCEKCNLQ453NINXWIVC5}

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	2026-05-18T02:09:55.051313Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

871e3d10c22284d5c39ddb50dbd915175fa941e13d4f713e5c13a3a536485810

Aliases

arxiv: 1001.2139 · arxiv_version: 1001.2139v1 · doi: 10.48550/arxiv.1001.2139 · pith_short_12: Q4PD2EGCEKCN · pith_short_16: Q4PD2EGCEKCNLQ45 · pith_short_8: Q4PD2EGC

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/Q4PD2EGCEKCNLQ453NINXWIVC5 \
  | 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: 871e3d10c22284d5c39ddb50dbd915175fa941e13d4f713e5c13a3a536485810

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a7257cacbb537e414c4996ba87269280f3c7f5d9ab44f288333e6ac97ab9a6f3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-01-13T12:29:36Z",
    "title_canon_sha256": "63922140760d36f02165c587f34605524b476b5ffaeab451a16289c8fa38094c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.2139",
    "kind": "arxiv",
    "version": 1
  }
}