Pith Number

pith:3LLCPUVC

pith:2013:3LLCPUVCH7TI3M6YARFLB6KOB7

not attested not anchored not stored refs pending

Optical and X-ray Properties of CAL 83: I. Quasi-periodic Optical and Supersoft Variability

A. F. Rajoelimanana, A. Odendaal, A. Udalski, P. A. Charles, P.J. Meintjes

arxiv:1304.4109 v1 · 2013-04-15 · astro-ph.SR · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3LLCPUVCH7TI3M6YARFLB6KOB7}

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	2026-05-18T01:50:32.754204Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dad627d2a23fe68db3d8044ab0f94e0fe9e59298f850914ca0ff3d0740833a8b

Aliases

arxiv: 1304.4109 · arxiv_version: 1304.4109v1 · doi: 10.48550/arxiv.1304.4109 · pith_short_12: 3LLCPUVCH7TI · pith_short_16: 3LLCPUVCH7TI3M6Y · pith_short_8: 3LLCPUVC

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/3LLCPUVCH7TI3M6YARFLB6KOB7 \
  | 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: dad627d2a23fe68db3d8044ab0f94e0fe9e59298f850914ca0ff3d0740833a8b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51878879538fd764a3afe48367c806c3ee0e8df986022b5a3644ce7b3e1c651f",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-04-15T14:19:57Z",
    "title_canon_sha256": "cf6f83a9b94795ccd0d6494886e6d8820f4d60e5da743fbfd4b5a46a12ea25dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.4109",
    "kind": "arxiv",
    "version": 1
  }
}