Pith Number

pith:EFPTLIDT

pith:2010:EFPTLIDTGFOLCDGML2FSMA65ZO

not attested not anchored not stored refs pending

Difference image photometry with bright variable backgrounds

(2) Liverpool JMU, (3) Ohio State Univ., (4) Chungbuk National Univ, (5) KASI, (6) Las Cumbres Observatory, A. Gould (3), A. Newsam (2), B.-G. Park (5), C. Han (4), E. Kerins (1), J.P. Duke (2), Korea, M.J. Darnley (2), R. Street (6) ((1) Univ. Manchester, UK, USA, USA)

arxiv:1004.2166 v2 · 2010-04-13 · astro-ph.GA · 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{EFPTLIDTGFOLCDGML2FSMA65ZO}

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	2026-05-18T02:08:06.191041Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

215f35a073315cb10ccc5e8b2603ddcb9bad400f4bb3cf3012c6f7459ab9db78

Aliases

arxiv: 1004.2166 · arxiv_version: 1004.2166v2 · doi: 10.48550/arxiv.1004.2166 · pith_short_12: EFPTLIDTGFOL · pith_short_16: EFPTLIDTGFOLCDGM · pith_short_8: EFPTLIDT

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/EFPTLIDTGFOLCDGML2FSMA65ZO \
  | 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: 215f35a073315cb10ccc5e8b2603ddcb9bad400f4bb3cf3012c6f7459ab9db78

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d03bb0015d82280a030f6397e39e89c82cb94363d61afec683d4af4f0f7f338f",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2010-04-13T12:47:55Z",
    "title_canon_sha256": "14e8590b1d74066f71c0be455dd139f329ce3017d8d686aea011979e4d9338ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.2166",
    "kind": "arxiv",
    "version": 2
  }
}