Pith Number

pith:4UPBYGXM

pith:2009:4UPBYGXMMI4NFSMJTH4GESHOMJ

not attested not anchored not stored refs pending

DD Mon and XY UMa: CCD Photometry and modelling of two close binary systems with solar-type components

A. Liakos, K. Gazeas, P. Niarchos

arxiv:0910.2911 v1 · 2009-10-15 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4UPBYGXMMI4NFSMJTH4GESHOMJ}

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	2026-07-04T15:54:30.656551Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e51e1c1aec6238d2c98999f86248ee6246dbc81c759cd8a6956d1d1c08d34b83

Aliases

arxiv: 0910.2911 · arxiv_version: 0910.2911v1 · doi: 10.48550/arxiv.0910.2911 · pith_short_12: 4UPBYGXMMI4N · pith_short_16: 4UPBYGXMMI4NFSMJ · pith_short_8: 4UPBYGXM

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/4UPBYGXMMI4NFSMJTH4GESHOMJ \
  | 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: e51e1c1aec6238d2c98999f86248ee6246dbc81c759cd8a6956d1d1c08d34b83

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9cbed40483e2b434d7dd043435eee70e190496f99d02e27d3c7fa334288cbb88",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-10-15T18:06:11Z",
    "title_canon_sha256": "96299014de7847e66589f5d8958cc488184ed6d048988f5be50a50aebc916dd2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.2911",
    "kind": "arxiv",
    "version": 1
  }
}