Pith Number

pith:3KZHXKZL

pith:2009:3KZHXKZLK74HMQYFZEGYGCYPEP

not attested not anchored not stored refs pending

Spectral Analyses of the Nearest Persistent Ultraluminous X-Ray Source M33 X-8

Ju-Fu Lu, Jun-Xian Wang, Shan-Shan Weng, Wei-Min Gu

arxiv:0908.4528 v1 · 2009-08-31 · astro-ph.HE · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3KZHXKZLK74HMQYFZEGYGCYPEP}

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	2026-05-18T02:12:12.646916Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dab27bab2b57f8764305c90d830b0f23e08bc5bdabe37eb1acbd371848744e20

Aliases

arxiv: 0908.4528 · arxiv_version: 0908.4528v1 · doi: 10.48550/arxiv.0908.4528 · pith_short_12: 3KZHXKZLK74H · pith_short_16: 3KZHXKZLK74HMQYF · pith_short_8: 3KZHXKZL

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/3KZHXKZLK74HMQYFZEGYGCYPEP \
  | 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: dab27bab2b57f8764305c90d830b0f23e08bc5bdabe37eb1acbd371848744e20

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "db80795af3bfa276a9ada84a43ff25a5db55a21198550a7e7ab8c76a456fb98c",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-08-31T13:06:22Z",
    "title_canon_sha256": "e3def850b54a201e933d11dc90063cfcde3341e4bc0d6e1ad65b3168b9990ba2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.4528",
    "kind": "arxiv",
    "version": 1
  }
}