Pith Number

pith:OSWRQR2V

pith:2007:OSWRQR2V3XIDQHWL4HK3Y6MMUB

not attested not anchored not stored refs pending

Towards an understanding of the Of?p star HD 191612: optical spectroscopy

A. Herrero, Danny J. Lennon, D. Bohlender, D. Gies, D. Harmer, D. McDavid, G. Rauw, H. Bond, Ian D. Howarth, I. Antokhin, I. Kolka, I. Negueruela, J.-F. Donati, Joachim Puls, K. Annuk, L. Georgiev, Nolan R. Walborn, P. Reig, T. Morel, Yael Naze

arxiv:0707.0594 v1 · 2007-07-04 · 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{OSWRQR2V3XIDQHWL4HK3Y6MMUB}

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	2026-07-05T01:58:05.905166Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74ad184755ddd0381ecbe1d5bc798ca0670c634c5dfe1cffea06e781908aac28

Aliases

arxiv: 0707.0594 · arxiv_version: 0707.0594v1 · doi: 10.48550/arxiv.0707.0594 · pith_short_12: OSWRQR2V3XID · pith_short_16: OSWRQR2V3XIDQHWL · pith_short_8: OSWRQR2V

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/OSWRQR2V3XIDQHWL4HK3Y6MMUB \
  | 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: 74ad184755ddd0381ecbe1d5bc798ca0670c634c5dfe1cffea06e781908aac28

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e255fd1f6674d6d1c37a81ba0826c73ed85ed3ce64117dd1e031e7410e408bbd",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-07-04T12:39:14Z",
    "title_canon_sha256": "8b712ca9a8580c7645c0f8a21f1178bd31b425d412f5b530e1cc1937e4eaac99"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0707.0594",
    "kind": "arxiv",
    "version": 1
  }
}