Pith Number

pith:5HHXTTY4

pith:2013:5HHXTTY4PGXUIDCDL7C25DVQPQ

not attested not anchored not stored refs pending

Ole Romer's method still on the stage. The study of two bound eclipsing binaries in quintuple system V994 Her

P. Zasche, R. Uhlar

arxiv:1302.4171 v1 · 2013-02-18 · 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{5HHXTTY4PGXUIDCDL7C25DVQPQ}

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	2026-05-18T03:33:23.914329Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9cf79cf1c79af440c435fc5ae8eb07c19848dc229ec00bb1cbf931248323e17

Aliases

arxiv: 1302.4171 · arxiv_version: 1302.4171v1 · doi: 10.48550/arxiv.1302.4171 · pith_short_12: 5HHXTTY4PGXU · pith_short_16: 5HHXTTY4PGXUIDCD · pith_short_8: 5HHXTTY4

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/5HHXTTY4PGXUIDCDL7C25DVQPQ \
  | 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: e9cf79cf1c79af440c435fc5ae8eb07c19848dc229ec00bb1cbf931248323e17

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21b969005e9dec7daaed294e89d474428b0c2a4b38194eda21f6f7fa9a88375c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-02-18T07:34:18Z",
    "title_canon_sha256": "e8ee3c9e8650cc725d9f49cd713c176268e9bde1c9505e55746c717268242d0e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.4171",
    "kind": "arxiv",
    "version": 1
  }
}