Pith Number

pith:UZ5RPTPF

pith:2006:UZ5RPTPFK4MQFAJC63WTKY64NL

not attested not anchored not stored refs pending

The Detailed Star Formation History in the Spheroid, Outer Disk, and Tidal Stream of the Andromeda Galaxy

Allen V. Sweigart & Randy A. Kimble (NASA/GSFC), Alvio Renzini (INAF), Ed Smith, Henry C. Ferguson (STScI), Puragra Guhathakurta (UCO/Lick), R. Michael Rich (UCLA), Thomas M. Brown

arxiv:astro-ph/0607637 v2 · 2006-07-28 · 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{UZ5RPTPFK4MQFAJC63WTKY64NL}

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	2026-05-18T04:28:58.196884Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a67b17cde55719028122f6ed3563dc6ac5854fc000ff0ca8e7c0d51d38c26b26

Aliases

arxiv: astro-ph/0607637 · arxiv_version: astro-ph/0607637v2 · doi: 10.48550/arxiv.astro-ph/0607637 · pith_short_12: UZ5RPTPFK4MQ · pith_short_16: UZ5RPTPFK4MQFAJC · pith_short_8: UZ5RPTPF

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/UZ5RPTPFK4MQFAJC63WTKY64NL \
  | 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: a67b17cde55719028122f6ed3563dc6ac5854fc000ff0ca8e7c0d51d38c26b26

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f7bc1db5932705186a57155530d5cfbfeaaf0419d2d7b316874d2302455cb5c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-07-28T04:04:15Z",
    "title_canon_sha256": "7841f202aa85f88a1f8c7871e840c708e57ddaa1f506a2ef8cae6764d64f9f24"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0607637",
    "kind": "arxiv",
    "version": 2
  }
}