Pith Number

pith:3TMSWVU2

pith:1998:3TMSWVU24XKOF4IUZ2HD7BCE5F

not attested not anchored not stored refs pending

Luminosity Evolution of Early-type Galaxies to z=0.83: Constraints on Formation Epoch and Omega

Daniel D. Kelson, Garth D. Illingworth, Marijn Franx, Pieter G. van Dokkum

arxiv:astro-ph/9807242 v1 · 1998-07-23 · 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{3TMSWVU24XKOF4IUZ2HD7BCE5F}

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	2026-07-04T16:06:52.423826Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dcd92b569ae5d4e2f114ce8e3f8444e94ce06873d4d41637649dab0b855d4e21

Aliases

arxiv: astro-ph/9807242 · arxiv_version: astro-ph/9807242v1 · doi: 10.48550/arxiv.astro-ph/9807242 · pith_short_12: 3TMSWVU24XKO · pith_short_16: 3TMSWVU24XKOF4IU · pith_short_8: 3TMSWVU2

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/3TMSWVU24XKOF4IUZ2HD7BCE5F \
  | 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: dcd92b569ae5d4e2f114ce8e3f8444e94ce06873d4d41637649dab0b855d4e21

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9bb0f224e257b39d6c5f6a2bf007ce8968cb847923a2eedf5570bbccec3f7cf1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-07-23T15:10:28Z",
    "title_canon_sha256": "d61ee55c6af1c4b1ea235601e4b1524399626691996f583043f5ad0f267eb2bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9807242",
    "kind": "arxiv",
    "version": 1
  }
}