Pith Number

pith:B4VUYT2W

pith:2008:B4VUYT2WYKDKHMWUJ57HIM3INU

not attested not anchored not stored refs pending

Spectroscopic and photometric variability of the O9.5Vp star HD93521

B. Vandenbussche, C. Aerts, E. Gosset, G. Rauw, H. Van Winckel, K. Lefever, M. De Becker, N. Linder, P. Eenens, Y. Naze

arxiv:0806.3640 v1 · 2008-06-23 · 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{B4VUYT2WYKDKHMWUJ57HIM3INU}

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	2026-07-05T01:57:42.806325Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f2b4c4f56c286a3b2d44f7e7433686d3a0cb9df2ce3114821a70fdb9c02f17e

Aliases

arxiv: 0806.3640 · arxiv_version: 0806.3640v1 · doi: 10.48550/arxiv.0806.3640 · pith_short_12: B4VUYT2WYKDK · pith_short_16: B4VUYT2WYKDKHMWU · pith_short_8: B4VUYT2W

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/B4VUYT2WYKDKHMWUJ57HIM3INU \
  | 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: 0f2b4c4f56c286a3b2d44f7e7433686d3a0cb9df2ce3114821a70fdb9c02f17e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf4f815da7c0e0d0658b23fcae73cdc3e555b757f83ac5628d78374b9a9d6bc7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-06-23T10:19:39Z",
    "title_canon_sha256": "166d42356f2df6940f5d5a8e678440bca930ccd956b5427a3075ca5e8caba4a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0806.3640",
    "kind": "arxiv",
    "version": 1
  }
}