Pith Number

pith:4S4MFXDG

pith:2013:4S4MFXDGVPFSP3JZFLPDNZI2JF

not attested not anchored not stored refs pending

An Algorithm for Precise Aperture Photometry of Critically Sampled Images

Robert Lupton, Steven Bickerton

arxiv:1302.4764 v1 · 2013-02-19 · astro-ph.IM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4S4MFXDGVPFSP3JZFLPDNZI2JF}

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	2026-05-18T01:51:35.144247Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4b8c2dc66abcb27ed392ade36e51a497ae7eff42424d408a2d4003419138180

Aliases

arxiv: 1302.4764 · arxiv_version: 1302.4764v1 · doi: 10.48550/arxiv.1302.4764 · pith_short_12: 4S4MFXDGVPFS · pith_short_16: 4S4MFXDGVPFSP3JZ · pith_short_8: 4S4MFXDG

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/4S4MFXDGVPFSP3JZFLPDNZI2JF \
  | 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: e4b8c2dc66abcb27ed392ade36e51a497ae7eff42424d408a2d4003419138180

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36e61c516ab7ecafb7c18c5b9ab6d4f68930d090e677fbae9280d81919480862",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2013-02-19T22:02:09Z",
    "title_canon_sha256": "b0009f1676ffd5371ac61f92a85e6fd40d254a91e694e3afba7f50d0a42bb552"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.4764",
    "kind": "arxiv",
    "version": 1
  }
}