Pith Number

pith:UPG3YVWY

pith:2009:UPG3YVWYU7FSOXTZTQ2RUMUDQS

not attested not anchored not stored refs pending

Orbital periods of cataclysmic variables identified by the SDSS. VI. The 4.5-hr period eclipsing system SDSS J100658.40+233724.4

A. Rebassa-Mansergas, B. T. Gansicke, C. M. Copperwheat, John Southworth, P. Rodriguez-Gil, R. D. G. Hickman, T. R. Marsh

arxiv:0909.2784 v1 · 2009-09-15 · 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{UPG3YVWYU7FSOXTZTQ2RUMUDQS}

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	2026-05-18T02:11:47.781538Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3cdbc56d8a7cb275e799c351a3283848fdf727791eb1b1232c39fe384e2de4c

Aliases

arxiv: 0909.2784 · arxiv_version: 0909.2784v1 · doi: 10.48550/arxiv.0909.2784 · pith_short_12: UPG3YVWYU7FS · pith_short_16: UPG3YVWYU7FSOXTZ · pith_short_8: UPG3YVWY

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/UPG3YVWYU7FSOXTZTQ2RUMUDQS \
  | 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: a3cdbc56d8a7cb275e799c351a3283848fdf727791eb1b1232c39fe384e2de4c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55083a14207c7d2747d71d7f2b2b4b1d489774738e55ad979e24ba7f61e988e4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-09-15T12:03:13Z",
    "title_canon_sha256": "2d8e530331d5b5fc27a617878894ef26b5b4f1c28e9f1daaa088c0bb59072865"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.2784",
    "kind": "arxiv",
    "version": 1
  }
}