Pith Number

pith:X2UTOMUM

pith:2001:X2UTOMUMT6MCVHQ4IUZYQF6Q6M

not attested not anchored not stored refs pending

Discovery of Reflection Nebulosity Around Five Vega-like Stars

2), 2) ((1) UC Berkeley, (2) CfAO, (3) STScI, (4) IfA/Hawaii), David C. Jewitt (4), James P. Lloyd (1, James R. Graham (1, Paul Kalas (1, Steven V.W. Beckwith (3)

arxiv:astro-ph/0111121 v1 · 2001-11-06 · 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{X2UTOMUMT6MCVHQ4IUZYQF6Q6M}

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	2026-05-18T04:29:05.201818Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bea937328c9f982a9e1c45338817d0f32f166a003982e0b93731c6244581d654

Aliases

arxiv: astro-ph/0111121 · arxiv_version: astro-ph/0111121v1 · doi: 10.48550/arxiv.astro-ph/0111121 · pith_short_12: X2UTOMUMT6MC · pith_short_16: X2UTOMUMT6MCVHQ4 · pith_short_8: X2UTOMUM

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/X2UTOMUMT6MCVHQ4IUZYQF6Q6M \
  | 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: bea937328c9f982a9e1c45338817d0f32f166a003982e0b93731c6244581d654

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b2af150fdbce24534d586967b0ac0fbd29b7a15768765ae98ef44aee317fe65c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-11-06T18:38:08Z",
    "title_canon_sha256": "16200014c02e299d9d5e3aa52890169c1a693d7b5a59e7b3a78cbb512b9b8044"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0111121",
    "kind": "arxiv",
    "version": 1
  }
}