Pith Number

pith:XZSPZNYO

pith:2001:XZSPZNYO6EF7ZVQEHCBOQOARD6

not attested not anchored not stored refs pending

The joint XMM-Newton and Chandra view of YY Gem

(2) Paul Scherrer Institut, (3) Hamburger Sternwarte), B. Stelzer (1), J. H. M. M. Schmitt (3) ((1) MPE Garching, M. Audard (2), R. Neuhaeuser (1), V. Burwitz (1)

arxiv:astro-ph/0109413 v1 · 2001-09-24 · 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{XZSPZNYO6EF7ZVQEHCBOQOARD6}

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	2026-07-04T14:11:29.970057Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be64fcb70ef10bfcd6043882e838111fafb860478dfb042e86da3203832c4f20

Aliases

arxiv: astro-ph/0109413 · arxiv_version: astro-ph/0109413v1 · doi: 10.48550/arxiv.astro-ph/0109413 · pith_short_12: XZSPZNYO6EF7 · pith_short_16: XZSPZNYO6EF7ZVQE · pith_short_8: XZSPZNYO

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/XZSPZNYO6EF7ZVQEHCBOQOARD6 \
  | 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: be64fcb70ef10bfcd6043882e838111fafb860478dfb042e86da3203832c4f20

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3980dc06899b82ee0318fcfb939719970942b6ade216bd02eebf0e3803ad38cf",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-09-24T12:07:56Z",
    "title_canon_sha256": "bad356df15ab1fd3f2d5ca61f314ac83c974a1c83a8ac691b12829caf736cac4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0109413",
    "kind": "arxiv",
    "version": 1
  }
}