Pith Number

pith:XUI5Q5G3

pith:1999:XUI5Q5G36IOI5SYHPLP62GADWV

not attested not anchored not stored refs pending

Photometric Recovery of Crowded Stellar Fields Observed with HST/WFPC2 and the Effects of Confusion Noise on the Extragalactic Distance Scale

Abhijit Saha, Jeremy R. Mould, jr, Laura Ferrarese, N.A. Silbermann, Peter B. Stetson, Wendy L. Freedman & Robert C. Kennicutt

arxiv:astro-ph/9911193 v1 · 1999-11-11 · astro-ph

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XUI5Q5G36IOI5SYHPLP62GADWV}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T03:47:42.337799Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd11d874dbf21c8ecb077adfed1803b567392e3d8dc45b29f3f2c213b503d3ff

Aliases

arxiv: astro-ph/9911193 · arxiv_version: astro-ph/9911193v1 · doi: 10.48550/arxiv.astro-ph/9911193 · pith_short_12: XUI5Q5G36IOI · pith_short_16: XUI5Q5G36IOI5SYH · pith_short_8: XUI5Q5G3

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/XUI5Q5G36IOI5SYHPLP62GADWV \
  | 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: bd11d874dbf21c8ecb077adfed1803b567392e3d8dc45b29f3f2c213b503d3ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07d04fc7380a6d125d95b1ff235ad0b7bc6213bba97507fe17308e37b1fb9fd3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-11-11T15:43:30Z",
    "title_canon_sha256": "2acec18a50802c8d0624f786fb057408969c73e77a7126bf7dfce1f5fb845018"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9911193",
    "kind": "arxiv",
    "version": 1
  }
}