Pith Number

pith:UDAGGIRJ

pith:2000:UDAGGIRJHPATDDXGK3VBLGTL5B

not attested not anchored not stored refs pending

Anomalous Surface Brightness Fluctuations in NGC 4489

D.R. Silva, P.J. Quinn, S. Mei

arxiv:astro-ph/0011276 v1 · 2000-11-14 · 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{UDAGGIRJHPATDDXGK3VBLGTL5B}

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	2026-07-04T16:17:36.554739Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0c06322293bc1318ee656ea159a6be84bcbf616633b06eeb7925da6f2da3f22

Aliases

arxiv: astro-ph/0011276 · arxiv_version: astro-ph/0011276v1 · doi: 10.48550/arxiv.astro-ph/0011276 · pith_short_12: UDAGGIRJHPAT · pith_short_16: UDAGGIRJHPATDDXG · pith_short_8: UDAGGIRJ

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/UDAGGIRJHPATDDXGK3VBLGTL5B \
  | 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: a0c06322293bc1318ee656ea159a6be84bcbf616633b06eeb7925da6f2da3f22

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44ad21d7995689116835adbca04fa577ef241c2bba44c0624871785ddc5248b8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-11-14T18:44:03Z",
    "title_canon_sha256": "378e9285ab0636647f9d1cab0fc87139bf6e29dec1ffe75d57f7579f120e4d3d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0011276",
    "kind": "arxiv",
    "version": 1
  }
}