Pith Number

pith:IZPGRN5U

pith:1997:IZPGRN5ULAZ4Y5KMB24326EMPZ

not attested not anchored not stored refs pending

Morphological studies of the galaxy populations in distant "Butcher-Oemler" clusters with HST. II. AC103, AC118 and AC114 at z=0.31

A. J. Barger, I. Smail, R. M. Sharples, R. S. Ellis, W. J. Couch

arxiv:astro-ph/9711019 v1 · 1997-11-04 · 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{IZPGRN5ULAZ4Y5KMB24326EMPZ}

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	2026-07-04T16:03:21.400653Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

465e68b7b45833cc754c0eb9bd788c7e7d6efc8b0750ffd75d3714daa028bb7b

Aliases

arxiv: astro-ph/9711019 · arxiv_version: astro-ph/9711019v1 · doi: 10.48550/arxiv.astro-ph/9711019 · pith_short_12: IZPGRN5ULAZ4 · pith_short_16: IZPGRN5ULAZ4Y5KM · pith_short_8: IZPGRN5U

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/IZPGRN5ULAZ4Y5KMB24326EMPZ \
  | 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: 465e68b7b45833cc754c0eb9bd788c7e7d6efc8b0750ffd75d3714daa028bb7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e54ca370179008140f6132cebc11c46e6e9ae242cac18166e0da6c4c961e6059",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-11-04T03:06:40Z",
    "title_canon_sha256": "4cf46b19647a0e45e8a815776987338a32b308e6c8a91e84ef6989614d26e476"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9711019",
    "kind": "arxiv",
    "version": 1
  }
}