Pith Number

pith:NJFT2CRZ

pith:2009:NJFT2CRZ5NMEFTF7LBVNB3XI22

not attested not anchored not stored refs pending

The Redshift Evolution of the Mass Function of Cold Gas in Hierarchical Galaxy Formation Models

C. G. Lacey (Durham), C. M. Baugh (Durham), C. Power (Leicester/Swinburne)

arxiv:0908.1396 v2 · 2009-08-10 · 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{NJFT2CRZ5NMEFTF7LBVNB3XI22}

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	2026-05-18T02:12:35.823168Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a4b3d0a39eb5842ccbf586ad0eee8d696a4d6d03d472d7b680dc41310093836

Aliases

arxiv: 0908.1396 · arxiv_version: 0908.1396v2 · doi: 10.48550/arxiv.0908.1396 · pith_short_12: NJFT2CRZ5NME · pith_short_16: NJFT2CRZ5NMEFTF7 · pith_short_8: NJFT2CRZ

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/NJFT2CRZ5NMEFTF7LBVNB3XI22 \
  | 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: 6a4b3d0a39eb5842ccbf586ad0eee8d696a4d6d03d472d7b680dc41310093836

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8c43fc2496c7b5b9a623d46da0ff65b3e74b7b305b5248d61b41b25f7c5edfd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-08-10T20:20:36Z",
    "title_canon_sha256": "9dff8852dd2965fd651657d5fc432b74dadb01747949afaaffe0a6554928f7da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.1396",
    "kind": "arxiv",
    "version": 2
  }
}