Pith Number

pith:R2VH4Y2M

pith:2009:R2VH4Y2ML75TJGZCTD6YCV55BY

not attested not anchored not stored refs pending

Photometric monitoring of the young star Par 1724 in Orion

A. Koeltzsch, C. Broeg (U Bern), C. Ginski, F. Bertoldi (U Bonn), M.M. Hohle, M. Moualla (AIU Jena), M. Mugrauer (AIU Jena), M. Vanko, N. Young (Jodrell Bank U Manchester), R. Neuhaeuser, St. Raetz, T. Eisenbeiss, T.O.B. Schmidt, T. Roell, W. Rammo

arxiv:0905.1807 v1 · 2009-05-12 · 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{R2VH4Y2ML75TJGZCTD6YCV55BY}

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	2026-05-18T04:36:40.609593Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8eaa7e634c5ffb349b2298fd8157bd0e009e5adf6756e59bb3eb9a33ee198126

Aliases

arxiv: 0905.1807 · arxiv_version: 0905.1807v1 · doi: 10.48550/arxiv.0905.1807 · pith_short_12: R2VH4Y2ML75T · pith_short_16: R2VH4Y2ML75TJGZC · pith_short_8: R2VH4Y2M

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/R2VH4Y2ML75TJGZCTD6YCV55BY \
  | 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: 8eaa7e634c5ffb349b2298fd8157bd0e009e5adf6756e59bb3eb9a33ee198126

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc72fd8029d6ca45c67a3145bec0802eefea618a8075fae7bde130ecdda2d8a1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-05-12T13:02:52Z",
    "title_canon_sha256": "e0254e5145e2d979c28d5ae3d3e14de14a7d82d055e17e1599d21c400ab9064f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.1807",
    "kind": "arxiv",
    "version": 1
  }
}