Pith Number

pith:YRP27AQX

pith:2011:YRP27AQXLTND6DCQOCTMZPJ3CZ

not attested not anchored not stored refs pending

Optical spectroscopy of Classical Be stars in open clusters

Annapurni Subramaniam, Blesson Mathew

arxiv:1108.5850 v1 · 2011-08-30 · 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{YRP27AQXLTND6DCQOCTMZPJ3CZ}

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	2026-05-18T04:14:28.412839Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c45faf82175cda3f0c5070a6ccbd3b166e939414d0b82ec08fb90cf19d663dba

Aliases

arxiv: 1108.5850 · arxiv_version: 1108.5850v1 · doi: 10.48550/arxiv.1108.5850 · pith_short_12: YRP27AQXLTND · pith_short_16: YRP27AQXLTND6DCQ · pith_short_8: YRP27AQX

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/YRP27AQXLTND6DCQOCTMZPJ3CZ \
  | 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: c45faf82175cda3f0c5070a6ccbd3b166e939414d0b82ec08fb90cf19d663dba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "92013ceacc2febac81e512e64239d0f25ad64a961d9442ab339aea0bae7b15e5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-08-30T07:05:04Z",
    "title_canon_sha256": "6418d6e1a232d0eb768a6faece2bc929c7bb716a180cd96f8b76888c9395cbad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.5850",
    "kind": "arxiv",
    "version": 1
  }
}