Pith Number

pith:VU7ALFSB

pith:2004:VU7ALFSBQFV76YF3THKBYIOJ2K

not attested not anchored not stored refs pending

Simultaneous X-Ray and optical spectroscopy of the Seyfert galaxy Mrk 993

A. Corral, F.J. Carrera, M.T. Ceballos, S. Mateos, X. Barcons

arxiv:astro-ph/0410347 v1 · 2004-10-14 · 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{VU7ALFSBQFV76YF3THKBYIOJ2K}

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	2026-05-18T01:07:32.056304Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad3e059641816bff60bb99d41c21c9d2a00bc2649f30092166d7ee7cea38564c

Aliases

arxiv: astro-ph/0410347 · arxiv_version: astro-ph/0410347v1 · doi: 10.48550/arxiv.astro-ph/0410347 · pith_short_12: VU7ALFSBQFV7 · pith_short_16: VU7ALFSBQFV76YF3 · pith_short_8: VU7ALFSB

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/VU7ALFSBQFV76YF3THKBYIOJ2K \
  | 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: ad3e059641816bff60bb99d41c21c9d2a00bc2649f30092166d7ee7cea38564c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "831bd966ea4a93e1cf7ad1090c8227486cee408c7bfba3cce626425126792be8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-10-14T10:06:59Z",
    "title_canon_sha256": "d446c1f24beb86a28bd7f6e60fd1a9a7c354f605d86f85587bfebdf17281648f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0410347",
    "kind": "arxiv",
    "version": 1
  }
}