Pith Number

pith:QUKJBWFS

pith:2000:QUKJBWFS7II5A5MUUD3476QJQD

not attested not anchored not stored refs pending

Keck Studies of M31's Stellar Halo

David B. Reitzel, Eva K. Grebel, Puragra Guhathakurta

arxiv:astro-ph/0004371 v1 · 2000-04-27 · 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{QUKJBWFS7II5A5MUUD3476QJQD}

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	2026-05-18T01:40:47.933919Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

851490d8b2fa11d07594a0f7cffa0980f6e248d669a13229f34f189b4235e7b5

Aliases

arxiv: astro-ph/0004371 · arxiv_version: astro-ph/0004371v1 · doi: 10.48550/arxiv.astro-ph/0004371 · pith_short_12: QUKJBWFS7II5 · pith_short_16: QUKJBWFS7II5A5MU · pith_short_8: QUKJBWFS

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/QUKJBWFS7II5A5MUUD3476QJQD \
  | 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: 851490d8b2fa11d07594a0f7cffa0980f6e248d669a13229f34f189b4235e7b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cbd78815f8efcf5c22f7ccd6984189660925a7bc2e9a2e45b4734fa31236dbd4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-04-27T06:12:47Z",
    "title_canon_sha256": "894b64a0c4651bbf5377bb9e57b793f06bde4c5e51cc7af141901513c1a7c428"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0004371",
    "kind": "arxiv",
    "version": 1
  }
}