Pith Number

pith:FKZY4Z35

pith:2011:FKZY4Z354AHZIW4LMJJ37TZKZH

not attested not anchored not stored refs pending

Ion-by-ion Cooling efficiencies

Gary J. Ferland, Orly Gnat

arxiv:1111.6980 v1 · 2011-11-29 · astro-ph.IM · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FKZY4Z354AHZIW4LMJJ37TZKZH}

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	2026-05-18T01:59:21.644891Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ab38e677de00f945b8b6253bfcf2ac9dd80c1beb4680096f47a6bff35ad1d31

Aliases

arxiv: 1111.6980 · arxiv_version: 1111.6980v1 · doi: 10.48550/arxiv.1111.6980 · pith_short_12: FKZY4Z354AHZ · pith_short_16: FKZY4Z354AHZIW4L · pith_short_8: FKZY4Z35

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/FKZY4Z354AHZIW4LMJJ37TZKZH \
  | 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: 2ab38e677de00f945b8b6253bfcf2ac9dd80c1beb4680096f47a6bff35ad1d31

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c196d4858681ca0baa7b66dd1892ffd1b7daa5c86403a1001551d66e1ea89155",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2011-11-29T21:03:04Z",
    "title_canon_sha256": "daf874bfa5ec7d74b1dd3dc527e113e123a2f172181fcc21e08b361a6f15256a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.6980",
    "kind": "arxiv",
    "version": 1
  }
}