Pith Number

pith:GPF4UP4S

pith:2020:GPF4UP4S6OBAKY3SOQUNMTMDPN

not attested not anchored not stored refs pending

Detection of fluorine in hot Extreme Helium Stars

Anirban Bhowmick, David L. Lambert, Gajendra Pandey

arxiv:2001.07472 v1 · 2020-01-21 · 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{GPF4UP4S6OBAKY3SOQUNMTMDPN}

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	2026-07-05T00:46:57.005712Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

33cbca3f92f3820563727428d64d837b653dec999d56c87b853721098d63e671

Aliases

arxiv: 2001.07472 · arxiv_version: 2001.07472v1 · doi: 10.48550/arxiv.2001.07472 · pith_short_12: GPF4UP4S6OBA · pith_short_16: GPF4UP4S6OBAKY3S · pith_short_8: GPF4UP4S

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/GPF4UP4S6OBAKY3SOQUNMTMDPN \
  | 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: 33cbca3f92f3820563727428d64d837b653dec999d56c87b853721098d63e671

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1820f93921d5ff68532b178cd950ef05b79e7bfaa26781c7deb5d2e323d4b396",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-01-21T12:23:08Z",
    "title_canon_sha256": "f0217dec1a4a1828078a591b288073dc53123a900b7b45fc0fffb9cecaa72cc7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.07472",
    "kind": "arxiv",
    "version": 1
  }
}