Pith Number

pith:FS6KJFHV

pith:2017:FS6KJFHVBN7ZSJU5NCBU47KGYZ

not attested not anchored not stored refs pending

On the binary nature of massive blue hypergiants: high-resolution X-ray spectroscopy suggests that Cyg OB2 12 is a colliding wind binary

A. A. C. Sander, D.P. Huenemoerder, H. Todt, L.M. Oskinova, R. Ignace, T. Shenar, W.-R. Hamann

arxiv:1707.04473 v1 · 2017-07-14 · astro-ph.SR · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FS6KJFHVBN7ZSJU5NCBU47KGYZ}

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	2026-05-18T00:37:01.223957Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2cbca494f50b7f99269d68834e7d46c6777c014cae2e56115adf59f35d8d90b6

Aliases

arxiv: 1707.04473 · arxiv_version: 1707.04473v1 · doi: 10.48550/arxiv.1707.04473 · pith_short_12: FS6KJFHVBN7Z · pith_short_16: FS6KJFHVBN7ZSJU5 · pith_short_8: FS6KJFHV

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/FS6KJFHVBN7ZSJU5NCBU47KGYZ \
  | 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: 2cbca494f50b7f99269d68834e7d46c6777c014cae2e56115adf59f35d8d90b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2c8acc491344e5e94c29ec7a1387ee078b4b179de6404b1a35dd0770e5dfca1",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2017-07-14T12:00:13Z",
    "title_canon_sha256": "04b509e0d496a3534ae575454b46b62c4000721798df5d6494277dd9ac7fcae0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.04473",
    "kind": "arxiv",
    "version": 1
  }
}