Pith Number

pith:NVOQKBU7

pith:2011:NVOQKBU7OU42F5T7AB5B3UQV7J

not attested not anchored not stored refs pending

Sources of X-rays from galaxies

Q. Daniel Wang (UMass)

arxiv:1112.0530 v1 · 2011-12-02 · 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{NVOQKBU7OU42F5T7AB5B3UQV7J}

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	2026-05-18T01:59:17.776888Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d5d05069f7539a2f67f007a1dd215fa43d22943f0c5653b2863de35fab50d22

Aliases

arxiv: 1112.0530 · arxiv_version: 1112.0530v1 · doi: 10.48550/arxiv.1112.0530 · pith_short_12: NVOQKBU7OU42 · pith_short_16: NVOQKBU7OU42F5T7 · pith_short_8: NVOQKBU7

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/NVOQKBU7OU42F5T7AB5B3UQV7J \
  | 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: 6d5d05069f7539a2f67f007a1dd215fa43d22943f0c5653b2863de35fab50d22

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ff2e45f7f9dc9f9415365cb942e138617b55cd1cca0288dcf6506cd628b38e2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-12-02T18:10:52Z",
    "title_canon_sha256": "9fa77a2f521edfe5d5d1415480497ff498207fc34f22ca43dbb8b3a2bb823c93"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.0530",
    "kind": "arxiv",
    "version": 1
  }
}