Pith Number

pith:2IFXPXPY

pith:2011:2IFXPXPY2O5QVU4DLM3AHISWCW

not attested not anchored not stored refs pending

An Infrared Nebula Associated with Delta Cephei: Evidence of Mass Loss?

D. Huelsman, D. L. Welch, G. Bono, G. G. Fazio, K. Y. L. Su, L. D. Matthews, M. Marengo, M. Romaniello, N. R. Evans, P. Barmby

arxiv:1102.0305 v1 · 2011-02-01 · 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{2IFXPXPY2O5QVU4DLM3AHISWCW}

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	2026-05-18T02:03:17.809140Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d20b77ddf8d3bb0ad3835b3603a25615baa0f4fa067c9aa6da798d50e6afcc62

Aliases

arxiv: 1102.0305 · arxiv_version: 1102.0305v1 · doi: 10.48550/arxiv.1102.0305 · pith_short_12: 2IFXPXPY2O5Q · pith_short_16: 2IFXPXPY2O5QVU4D · pith_short_8: 2IFXPXPY

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/2IFXPXPY2O5QVU4DLM3AHISWCW \
  | 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: d20b77ddf8d3bb0ad3835b3603a25615baa0f4fa067c9aa6da798d50e6afcc62

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "911d5192efaf5130760d84f0a80c9d3813e12ea37fb224a0a246fc891d89f85f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-02-01T21:43:34Z",
    "title_canon_sha256": "994eb00f6963671b7e043741cc3738998bb10793cb38ed178220475b640e7ba2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.0305",
    "kind": "arxiv",
    "version": 1
  }
}