Pith Number

pith:O335NMXV

pith:1998:O335NMXVHCM5C6DR6WMADLUY4V

not attested not anchored not stored refs pending

Extended Ly-alpha emission from a damped Ly-alpha absorber at z = 1.93, and the relation between DLAs and Lyman-break galaxies

J.U. Fynbo, P. Moller, S.J. Warren

arxiv:astro-ph/9812434 v1 · 1998-12-23 · 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{O335NMXVHCM5C6DR6WMADLUY4V}

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	2026-05-18T01:07:36.719406Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

76f7d6b2f53899d17871f59801ae98e569aeb33453f8f654fa6c5ef57abc2640

Aliases

arxiv: astro-ph/9812434 · arxiv_version: astro-ph/9812434v1 · doi: 10.48550/arxiv.astro-ph/9812434 · pith_short_12: O335NMXVHCM5 · pith_short_16: O335NMXVHCM5C6DR · pith_short_8: O335NMXV

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/O335NMXVHCM5C6DR6WMADLUY4V \
  | 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: 76f7d6b2f53899d17871f59801ae98e569aeb33453f8f654fa6c5ef57abc2640

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55a1f52b685b2d102aae8f1659b2edcface146d25be7447c3474039c606853cb",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-12-23T11:59:46Z",
    "title_canon_sha256": "96819fc930aa4375a25c6daf65eb8ba6e52ebce2b0d0e5b04c3a1faabbed798f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9812434",
    "kind": "arxiv",
    "version": 1
  }
}