Pith Number

pith:NIMFCTPT

pith:2007:NIMFCTPTULZE3Y4P7VBNHU7UKL

not attested not anchored not stored refs pending

The Stellar Populations of dE galaxies in nearby Groups

G. S. Da Costa

arxiv:astro-ph/0701051 v1 · 2007-01-02 · 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{NIMFCTPTULZE3Y4P7VBNHU7UKL}

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	2026-07-04T14:58:21.091650Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a18514df3a2f24de38ffd42d3d3f452e10c8ae133e7430ee703f6ca212d5b63

Aliases

arxiv: astro-ph/0701051 · arxiv_version: astro-ph/0701051v1 · doi: 10.48550/arxiv.astro-ph/0701051 · pith_short_12: NIMFCTPTULZE · pith_short_16: NIMFCTPTULZE3Y4P · pith_short_8: NIMFCTPT

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/NIMFCTPTULZE3Y4P7VBNHU7UKL \
  | 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: 6a18514df3a2f24de38ffd42d3d3f452e10c8ae133e7430ee703f6ca212d5b63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56f9092b105afd678c58fc8a362780618cb8ba7abc75209305b624aca322fd37",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-01-02T23:35:21Z",
    "title_canon_sha256": "14df3892c1fddba38291c968f448baedf0fca3d366c2d127a20e21808366a90e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0701051",
    "kind": "arxiv",
    "version": 1
  }
}