Pith Number

pith:VE4HR4AY

pith:2019:VE4HR4AYLS7AWH6XFFE7A55ARV

not attested not anchored not stored refs pending

Improved calculations of electron-ion Bremsstrahlung Gaunt factors for astrophysical applications

Andrea Ravenni, Boris Bolliet, Jens Chluba

arxiv:1911.08861 v1 · 2019-11-20 · astro-ph.CO · astro-ph.HE · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VE4HR4AYLS7AWH6XFFE7A55ARV}

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	2026-07-05T00:33:21.429887Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a93878f0185cbe0b1fd72949f077a08d787bb38f8b4dd80dc8542b1293ad245f

Aliases

arxiv: 1911.08861 · arxiv_version: 1911.08861v1 · doi: 10.48550/arxiv.1911.08861 · pith_short_12: VE4HR4AYLS7A · pith_short_16: VE4HR4AYLS7AWH6X · pith_short_8: VE4HR4AY

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/VE4HR4AYLS7AWH6XFFE7A55ARV \
  | 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: a93878f0185cbe0b1fd72949f077a08d787bb38f8b4dd80dc8542b1293ad245f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "971a79d192c54b602ea1f6017e64decc0858c1ddf6dbe5dbebfe4cec4a20ae63",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2019-11-20T12:38:25Z",
    "title_canon_sha256": "a7160086b58c9f8ad266390483f3576d716b20aabbbd63faa340b2703643d531"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.08861",
    "kind": "arxiv",
    "version": 1
  }
}