Pith Number

pith:NNYMDOZX

pith:1999:NNYMDOZXB2IRTHWFTKQSVVC6GR

not attested not anchored not stored refs pending

Chemically Consistent Evolution of Galaxies on Cosmological Timescales and the DLA Galaxy Population

C. S. M\"oller (Universit\"atssternwarte, Germany), G\"ottingen, U. Fritze-v. Alvensleben, U. Lindner

arxiv:astro-ph/9907396 v1 · 1999-07-28 · 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{NNYMDOZXB2IRTHWFTKQSVVC6GR}

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	2026-05-18T01:07:36.222730Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b70c1bb370e91199ec59aa12ad45e3442d5581cc18238558c1ae5fd7e2f010b

Aliases

arxiv: astro-ph/9907396 · arxiv_version: astro-ph/9907396v1 · doi: 10.48550/arxiv.astro-ph/9907396 · pith_short_12: NNYMDOZXB2IR · pith_short_16: NNYMDOZXB2IRTHWF · pith_short_8: NNYMDOZX

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/NNYMDOZXB2IRTHWFTKQSVVC6GR \
  | 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: 6b70c1bb370e91199ec59aa12ad45e3442d5581cc18238558c1ae5fd7e2f010b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e677c51874de2a73b74c36d5808706ee5a6fc53f75bf15ce4981c61269f5587",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-07-28T15:34:08Z",
    "title_canon_sha256": "b85584d746ceaee1c0ec3dd2f5f3838b03c72a6ae5cfeb755cd55068eb6436bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9907396",
    "kind": "arxiv",
    "version": 1
  }
}