Pith Number

pith:7WULNDDV

pith:2010:7WULNDDVNNWQV4QBTV267FCL2X

not attested not anchored not stored refs pending

The X-Ray Properties of the Optically Brightest Mini-BAL Quasars from the Sloan Digital Sky Survey

Donald P. Schneider, Gordon P. Garmire, Jianfeng Wu, M. L. Comins, Ohad Shemmer, Robert R. Gibson, W. N. Brandt

arxiv:1009.3928 v1 · 2010-09-20 · astro-ph.CO · 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{7WULNDDVNNWQV4QBTV267FCL2X}

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	2026-05-18T02:20:11.247896Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fda8b68c756b6d0af2019d75ef944bd5f20b3fb08e64c8b650e0afdca3a6d364

Aliases

arxiv: 1009.3928 · arxiv_version: 1009.3928v1 · doi: 10.48550/arxiv.1009.3928 · pith_short_12: 7WULNDDVNNWQ · pith_short_16: 7WULNDDVNNWQV4QB · pith_short_8: 7WULNDDV

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/7WULNDDVNNWQV4QBTV267FCL2X \
  | 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: fda8b68c756b6d0af2019d75ef944bd5f20b3fb08e64c8b650e0afdca3a6d364

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7fb4ef698013e7c1c6c9782d61326b02876d5bcef0a63c83f9a02aae9e8f4480",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-09-20T20:00:01Z",
    "title_canon_sha256": "ef3c61db95946e67c59b88674fd7681107654ec5e6e30a27bc832bccbbc42489"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.3928",
    "kind": "arxiv",
    "version": 1
  }
}