Pith Number

pith:TPDYHQOG

pith:2014:TPDYHQOGIHQ4YRSXHK46TRSKCM

not attested not anchored not stored refs pending

HEIDI: An Automated Process for the Identification and Extraction of Photometric Light Curves from Astronomical Images

D. M. Coward, H. U. Wallon Pizarro, M. G. Zadnik, M. Todd, P. Tanga

arxiv:1401.2593 v2 · 2014-01-12 · 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{TPDYHQOGIHQ4YRSXHK46TRSKCM}

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	2026-05-18T03:02:19.981136Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9bc783c1c641e1cc46573ab9e9c64a1322f1f6f078d48e9afc4f78f42811bd9d

Aliases

arxiv: 1401.2593 · arxiv_version: 1401.2593v2 · doi: 10.48550/arxiv.1401.2593 · pith_short_12: TPDYHQOGIHQ4 · pith_short_16: TPDYHQOGIHQ4YRSX · pith_short_8: TPDYHQOG

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/TPDYHQOGIHQ4YRSXHK46TRSKCM \
  | 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: 9bc783c1c641e1cc46573ab9e9c64a1322f1f6f078d48e9afc4f78f42811bd9d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63a3d98a25bba5305477dc6c7642f7ec40c82f819cf5ab11bdeb27a12fab96d2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2014-01-12T06:20:04Z",
    "title_canon_sha256": "ebde09ae32bcecbeec68d667e43f8fbe2997b415edf4ac6c6f0aef3dcb8eab26"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.2593",
    "kind": "arxiv",
    "version": 2
  }
}