Pith Number

pith:NQTVOYTF

pith:2010:NQTVOYTFGU47Q2U2B72IZJYIVQ

not attested not anchored not stored refs pending

The Composite Spectrum of Strong Lyman-alpha Forest Absorbers

David H. Weinberg, Donald G. York, Matthew M. Pieri, Smita Mathur, Stephan Frank

arxiv:1001.5282 v2 · 2010-01-28 · 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{NQTVOYTFGU47Q2U2B72IZJYIVQ}

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	2026-05-18T02:09:22.418837Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c275762653539f86a9a0ff48ca708ac031c4df059e2735a1fbc31f1b67dcbf8

Aliases

arxiv: 1001.5282 · arxiv_version: 1001.5282v2 · doi: 10.48550/arxiv.1001.5282 · pith_short_12: NQTVOYTFGU47 · pith_short_16: NQTVOYTFGU47Q2U2 · pith_short_8: NQTVOYTF

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/NQTVOYTFGU47Q2U2B72IZJYIVQ \
  | 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: 6c275762653539f86a9a0ff48ca708ac031c4df059e2735a1fbc31f1b67dcbf8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bcfd0a587abf53e7ee5d6f3739909ee411af444a54deadc4c442be61b9b65b71",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-01-28T22:29:51Z",
    "title_canon_sha256": "6104987a2428ad755dbdc3419a07e684ceeaa4c8dcaca3dfc59e6084f926a44c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.5282",
    "kind": "arxiv",
    "version": 2
  }
}