Pith Number

pith:RCHJK3TJ

pith:2002:RCHJK3TJSEIKWMP3QOEKQ2P4FG

not attested not anchored not stored refs pending

The Andromeda Project. I. Deep HST-WFPC2 V,I photometry of 16 fields toward the disk and the halo of the M31 galaxy. Probing the stellar content and metallicity distribution

(2) Dept. Physics & Astronomy, C. Cacciari (1), F. Fusi Pecci (1), L. Federici (1), M. Bellazzini (1), R.M. Rich (2) ((1) INAF-Osservatorio Astronomico Bologna, UCLA)

arxiv:astro-ph/0212531 v1 · 2002-12-23 · 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{RCHJK3TJSEIKWMP3QOEKQ2P4FG}

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	2026-05-18T04:18:14.568693Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

888e956e699110ab31fb8388a869fc299cee96030142e9e628b2e2ee107dcf9b

Aliases

arxiv: astro-ph/0212531 · arxiv_version: astro-ph/0212531v1 · doi: 10.48550/arxiv.astro-ph/0212531 · pith_short_12: RCHJK3TJSEIK · pith_short_16: RCHJK3TJSEIKWMP3 · pith_short_8: RCHJK3TJ

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/RCHJK3TJSEIKWMP3QOEKQ2P4FG \
  | 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: 888e956e699110ab31fb8388a869fc299cee96030142e9e628b2e2ee107dcf9b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd4e96996ab8022580d5c5330e0d91b06eb547985d4fba3643957e730ed85c43",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-12-23T18:14:04Z",
    "title_canon_sha256": "2016d4520a8aaf33ddfdcff93d972fb4f46e4d55bc049ebccd9a0d938ff3cbb7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0212531",
    "kind": "arxiv",
    "version": 1
  }
}