Pith Number

pith:VEIF7NJF

pith:2004:VEIF7NJFRMJV2FVFAFPSFMXMN3

not attested not anchored not stored refs pending

Discovery of magnetic fields in hot subdwarfs

S. Friedrich, S. Jordan, S. J. O'Toole, U. Heber

arxiv:astro-ph/0410042 v1 · 2004-10-02 · astro-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{VEIF7NJFRMJV2FVFAFPSFMXMN3}

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	2026-07-04T14:13:47.673340Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9105fb5258b135d16a5015f22b2ec6ee1dbaeabd2cc67f356efa5df87af5a66

Aliases

arxiv: astro-ph/0410042 · arxiv_version: astro-ph/0410042v1 · doi: 10.48550/arxiv.astro-ph/0410042 · pith_short_12: VEIF7NJFRMJV · pith_short_16: VEIF7NJFRMJV2FVF · pith_short_8: VEIF7NJF

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/VEIF7NJFRMJV2FVFAFPSFMXMN3 \
  | 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: a9105fb5258b135d16a5015f22b2ec6ee1dbaeabd2cc67f356efa5df87af5a66

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c910ddd7f6ffaa4d9b52e19bf3602b29dcfc179f749a35e93e42854db746e754",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-10-02T12:07:16Z",
    "title_canon_sha256": "76b0f77988e09cd5e7756d1e69a8c0d9a0890ceabcfee01e3aea15e3a7d79b2c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0410042",
    "kind": "arxiv",
    "version": 1
  }
}