Pith Number

pith:4QILUWUS

pith:2015:4QILUWUSOQUFQY2RGK7VB76IFR

not attested not anchored not stored refs pending

AMBER-NACO aperture-synthesis imaging of the half-obscured central star and the edge-on disk of the red giant L2 Pup

Dieter Schertl, Gerd Weigelt, Karl-Heinz Hofmann, Keiichi Ohnaka

arxiv:1507.06668 v1 · 2015-07-23 · 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{4QILUWUSOQUFQY2RGK7VB76IFR}

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	2026-05-18T01:31:37.377868Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e410ba5a92742858635132bf50ffc82c4f396285e90336b0fabdd33e052ce37e

Aliases

arxiv: 1507.06668 · arxiv_version: 1507.06668v1 · doi: 10.48550/arxiv.1507.06668 · pith_short_12: 4QILUWUSOQUF · pith_short_16: 4QILUWUSOQUFQY2R · pith_short_8: 4QILUWUS

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/4QILUWUSOQUFQY2RGK7VB76IFR \
  | 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: e410ba5a92742858635132bf50ffc82c4f396285e90336b0fabdd33e052ce37e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f98e9677b78c13eb582ff21751dd6d98f641503cc23aa6d0763b0ecafbe70d9f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-07-23T20:14:19Z",
    "title_canon_sha256": "2913d3290b39c013c774256779629a4cbace56e7df4bc156189cec61669d3da2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.06668",
    "kind": "arxiv",
    "version": 1
  }
}