Pith Number

pith:TP62WXON

pith:1999:TP62WXONX45MVD6RB57ZFLD6RE

not attested not anchored not stored refs pending

The Dwarf Spheroidal Companions to M31: WFPC2 Observations of Andromeda II

G. S. Da Costa, Nelson Caldwell, Patrick Seitzer, T. E. Armandroff

arxiv:astro-ph/9911020 v1 · 1999-11-02 · 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{TP62WXONX45MVD6RB57ZFLD6RE}

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	2026-07-04T16:11:46.118718Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9bfdab5dcdbf3aca8fd10f7f92ac7e893e8ffa8a138cca3afcf075fca165c05c

Aliases

arxiv: astro-ph/9911020 · arxiv_version: astro-ph/9911020v1 · doi: 10.48550/arxiv.astro-ph/9911020 · pith_short_12: TP62WXONX45M · pith_short_16: TP62WXONX45MVD6R · pith_short_8: TP62WXON

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/TP62WXONX45MVD6RB57ZFLD6RE \
  | 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: 9bfdab5dcdbf3aca8fd10f7f92ac7e893e8ffa8a138cca3afcf075fca165c05c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c3185229d81d67e1d546c4f8db18ceca49408e1ff34c72d57937b7167c1dd54",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-11-02T18:49:18Z",
    "title_canon_sha256": "6cf07119619ec4383ffde46441dbca374318a486d12e79fc98ed7fb81b72b85d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9911020",
    "kind": "arxiv",
    "version": 1
  }
}