Pith Number

pith:I4CTLFFD

pith:1995:I4CTLFFDW7ENVX5JA3CLWOD72Q

not attested not anchored not stored refs pending

The outburst of the T Tauri star EX Lupi in 1994

Bo Reipurth, Thomas Lehmann, Wolfgang Brandner

arxiv:astro-ph/9506066 v1 · 1995-06-09 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I4CTLFFDW7ENVX5JA3CLWOD72Q}

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	2026-07-04T14:14:33.488606Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47053594a3b7c8dadfa906c4bb387fd4198bc3ef4e8274f5ee40f24bba2e2488

Aliases

arxiv: astro-ph/9506066 · arxiv_version: astro-ph/9506066v1 · doi: 10.48550/arxiv.astro-ph/9506066 · pith_short_12: I4CTLFFDW7EN · pith_short_16: I4CTLFFDW7ENVX5J · pith_short_8: I4CTLFFD

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/I4CTLFFDW7ENVX5JA3CLWOD72Q \
  | 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: 47053594a3b7c8dadfa906c4bb387fd4198bc3ef4e8274f5ee40f24bba2e2488

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c11d9a2de38e2d266b34c6d66a7db4aaba5a2ea0c324770e643063ba592218e4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1995-06-09T14:08:27Z",
    "title_canon_sha256": "f40274e10a25526ab4700ea5a6eb0237e18beffd4ae861e6ea236c9f6a9d371d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9506066",
    "kind": "arxiv",
    "version": 1
  }
}