Pith Number

pith:ICM4MEIY

pith:2008:ICM4MEIYKJHTE3CCS4AFIWBJJB

not attested not anchored not stored refs pending

A point source survey of M31 with the Spitzer Space Telescope

Charles E Woodward, Jeremy Mould, Karl Gordon, M.L.N. Ashby, Pauline Barmby, R.D. Gehrz, Roberta Humphries, S.P. Willner

arxiv:0807.0941 v1 · 2008-07-07 · 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{ICM4MEIYKJHTE3CCS4AFIWBJJB}

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	2026-07-04T15:34:10.701620Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4099c61118524f326c429700545829485af3c752dcacdfcf66b95d63c8647d32

Aliases

arxiv: 0807.0941 · arxiv_version: 0807.0941v1 · doi: 10.48550/arxiv.0807.0941 · pith_short_12: ICM4MEIYKJHT · pith_short_16: ICM4MEIYKJHTE3CC · pith_short_8: ICM4MEIY

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/ICM4MEIYKJHTE3CCS4AFIWBJJB \
  | 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: 4099c61118524f326c429700545829485af3c752dcacdfcf66b95d63c8647d32

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f17acf5c2179815d912c4ccc96869712aa6004ed263fbcda59bb73a24ec33bf7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-07-07T04:33:18Z",
    "title_canon_sha256": "d823242ea6f406acabfe7c9abb5ef1c2b62fae05888fc1a90c8ce3ab9da06277"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0807.0941",
    "kind": "arxiv",
    "version": 1
  }
}