Pith Number

pith:OZY4JC3G

pith:2009:OZY4JC3G7TERQJ3XHHESVWATIJ

not attested not anchored not stored refs pending

Influence of gravitational microlensing on broad absorption lines of QSOs: The case of the Fe K$\alpha$ line

Luka \v{C}. Popovi\'c, Predrag Jovanovi\'c, Sa\v{s}a Simi\'c

arxiv:0909.5423 v1 · 2009-09-29 · 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{OZY4JC3G7TERQJ3XHHESVWATIJ}

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	2026-05-18T02:34:20.785065Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7671c48b66fcc918277739c92ad813424b0ef198d082c2683ea59e81915b20dd

Aliases

arxiv: 0909.5423 · arxiv_version: 0909.5423v1 · doi: 10.48550/arxiv.0909.5423 · pith_short_12: OZY4JC3G7TER · pith_short_16: OZY4JC3G7TERQJ3X · pith_short_8: OZY4JC3G

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/OZY4JC3G7TERQJ3XHHESVWATIJ \
  | 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: 7671c48b66fcc918277739c92ad813424b0ef198d082c2683ea59e81915b20dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ebb6b387f6194742721d0f4f61148c2f17692bc51d6a20670f9cf6a1a9d816fc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-09-29T19:58:56Z",
    "title_canon_sha256": "7355585102e432df3ea86b259ed59081bb55463e9fe14984b472c6992dfe1625"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.5423",
    "kind": "arxiv",
    "version": 1
  }
}