Pith Number

pith:ZLLISP4J

pith:2002:ZLLISP4JKV23FPU5PSNEUBQOJ2

not attested not anchored not stored refs pending

A catalogue of damped Lyman alpha absorption systems and radio flux densities of the background quasars

E. Corbelli (Arcetri), J. K. Webb (UNSW), M. T. Murphy (UNSW), R. Bandiera (Arcetri), S. J. Curran (UNSW), V. V. Flambaum (UNSW)

arxiv:astro-ph/0206091 v1 · 2002-06-06 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZLLISP4JKV23FPU5PSNEUBQOJ2}

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	2026-07-04T15:48:02.258772Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cad6893f895575b2be9d7c9a4a060e4ea611c02789cbcc5327d662961d684542

Aliases

arxiv: astro-ph/0206091 · arxiv_version: astro-ph/0206091v1 · doi: 10.48550/arxiv.astro-ph/0206091 · pith_short_12: ZLLISP4JKV23 · pith_short_16: ZLLISP4JKV23FPU5 · pith_short_8: ZLLISP4J

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/ZLLISP4JKV23FPU5PSNEUBQOJ2 \
  | 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: cad6893f895575b2be9d7c9a4a060e4ea611c02789cbcc5327d662961d684542

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ab5c987dd79d017c72f3f9d4c6753c7d53c8437fe9db8358211ded27058c5ed",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-06-06T01:42:19Z",
    "title_canon_sha256": "8a19afefb9f032c6cd22756ddb40b2b7c73362c11ffd73061d466d650a02afd8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0206091",
    "kind": "arxiv",
    "version": 1
  }
}