Pith Number

pith:7BYKY7N5

pith:2004:7BYKY7N5M3YZU53YZDSR243Q52

not attested not anchored not stored refs pending

High Resolution X-ray Spectra of the Brightest OB Stars in the Cygnus OB2 Association

J. C. Reiter, J. J. MacFarlane, J. P. Cassinelli, N. A. Miller, W. L. Waldron

arxiv:astro-ph/0407376 v1 · 2004-07-17 · 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{7BYKY7N5M3YZU53YZDSR243Q52}

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	2026-07-04T16:44:20.121408Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f870ac7dbd66f19a7778c8e51d7370ee9cf93cf39cf76dda38ed2b7eb8fe6d1b

Aliases

arxiv: astro-ph/0407376 · arxiv_version: astro-ph/0407376v1 · doi: 10.48550/arxiv.astro-ph/0407376 · pith_short_12: 7BYKY7N5M3YZ · pith_short_16: 7BYKY7N5M3YZU53Y · pith_short_8: 7BYKY7N5

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/7BYKY7N5M3YZU53YZDSR243Q52 \
  | 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: f870ac7dbd66f19a7778c8e51d7370ee9cf93cf39cf76dda38ed2b7eb8fe6d1b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "acbe605f20dfd571f6995cfbfef7d36be6796ef02cfd3cfb41db6ac6e4dc0261",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-07-17T19:53:36Z",
    "title_canon_sha256": "712e666fef238a2b8182d2c9eee3e36e42abd698a955d27b489f9215fafae5ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0407376",
    "kind": "arxiv",
    "version": 1
  }
}