Pith Number

pith:2TS7UMDA

pith:2002:2TS7UMDAX24YOCOV2WX4S736IF

not attested not anchored not stored refs pending

Evidence for Stellar Substructure in the Halo and Outer Disk of M31

Annette Ferguson, Geraint Lewis, Mike Irwin, Nial Tanvir, Rodrigo Ibata

arxiv:astro-ph/0205530 v1 · 2002-05-30 · 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{2TS7UMDAX24YOCOV2WX4S736IF}

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	2026-05-18T04:27:05.198635Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4e5fa3060beb98709d5d5afc97f7e4160b6997726c2859cfff63294f878e35b

Aliases

arxiv: astro-ph/0205530 · arxiv_version: astro-ph/0205530v1 · doi: 10.48550/arxiv.astro-ph/0205530 · pith_short_12: 2TS7UMDAX24Y · pith_short_16: 2TS7UMDAX24YOCOV · pith_short_8: 2TS7UMDA

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/2TS7UMDAX24YOCOV2WX4S736IF \
  | 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: d4e5fa3060beb98709d5d5afc97f7e4160b6997726c2859cfff63294f878e35b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b41cd9148ed6444396fdd44f972167ec4aa704523b3d4906ed95373a3240e78e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-05-30T09:05:59Z",
    "title_canon_sha256": "69131cf355eaa140239cee8e9069a90186b814844b01b8c536e87bea78107fb8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0205530",
    "kind": "arxiv",
    "version": 1
  }
}