Pith Number

pith:2XW6Y2CF

pith:1997:2XW6Y2CFMLHX5G6XZ5IIGVNPS5

not attested not anchored not stored refs pending

Stellar Distributions and NIR Colours of Normal Galaxies

Groningen, R. de Grijs (Kapteyn Lab, R.F. Peletier, the Netherlands)

arxiv:astro-ph/9706202 v1 · 1997-06-19 · 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{2XW6Y2CFMLHX5G6XZ5IIGVNPS5}

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	2026-07-04T14:15:11.005092Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5edec684562cf7e9bd7cf508355af974ea248557ee89c5d09e5c6921e6f682b

Aliases

arxiv: astro-ph/9706202 · arxiv_version: astro-ph/9706202v1 · doi: 10.48550/arxiv.astro-ph/9706202 · pith_short_12: 2XW6Y2CFMLHX · pith_short_16: 2XW6Y2CFMLHX5G6X · pith_short_8: 2XW6Y2CF

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/2XW6Y2CFMLHX5G6XZ5IIGVNPS5 \
  | 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: d5edec684562cf7e9bd7cf508355af974ea248557ee89c5d09e5c6921e6f682b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4721283f868fbe253404a0d8bd6516b06dae6d8fa5bd3b2ad055bcfc953392bf",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-06-19T08:57:45Z",
    "title_canon_sha256": "9824e3947c223b83efec067247f1d4d6dd9d7e089dc85a9f3030cf31c91d65a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9706202",
    "kind": "arxiv",
    "version": 1
  }
}