Pith Number

pith:5DF5RP24

pith:1995:5DF5RP24WWZEUU6FXWA5SILBGD

not attested not anchored not stored refs pending

The Chemical Evolution of Damped Lyman Alpha Galaxies

D.L. King (RGO), L.J. Smith (UCL), M. Pettini (RGO), R.W. Hunstead (Sydney University)

arxiv:astro-ph/9502047 v1 · 1995-02-08 · 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{5DF5RP24WWZEUU6FXWA5SILBGD}

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	2026-05-18T01:07:42.318662Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e8cbd8bf5cb5b24a53c5bd81d9216130ec672a9293c35dc49b0f31e0823fb5c8

Aliases

arxiv: astro-ph/9502047 · arxiv_version: astro-ph/9502047v1 · doi: 10.48550/arxiv.astro-ph/9502047 · pith_short_12: 5DF5RP24WWZE · pith_short_16: 5DF5RP24WWZEUU6F · pith_short_8: 5DF5RP24

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/5DF5RP24WWZEUU6FXWA5SILBGD \
  | 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: e8cbd8bf5cb5b24a53c5bd81d9216130ec672a9293c35dc49b0f31e0823fb5c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d69529059ff978f2ed3dc4e32a00fd9b08b9efc5af6e7b23b906752f7cccf6a4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1995-02-08T13:25:05Z",
    "title_canon_sha256": "5de2c8609192993ef0b4f11ddc7172f52fffc1e0ebd81e53ffee1c19eb2b2e73"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9502047",
    "kind": "arxiv",
    "version": 1
  }
}