Pith Number

pith:ZLOAXHRA

pith:1997:ZLOAXHRAV6B27SZYV2EHWHZZKP

not attested not anchored not stored refs pending

Radio-optical orientation of E/S0 galaxies: APM versus FIRST

E. Stengler-Larrea (Santander, H. Andernach (Guanajuato, Mexico), Spain)

arxiv:astro-ph/9703143 v1 · 1997-03-21 · 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{ZLOAXHRAV6B27SZYV2EHWHZZKP}

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	2026-05-18T01:21:56.574707Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cadc0b9e20af83afcb38ae887b1f3953ca6b61aa65c072fd3aa6641d754fa013

Aliases

arxiv: astro-ph/9703143 · arxiv_version: astro-ph/9703143v1 · doi: 10.48550/arxiv.astro-ph/9703143 · pith_short_12: ZLOAXHRAV6B2 · pith_short_16: ZLOAXHRAV6B27SZY · pith_short_8: ZLOAXHRA

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/ZLOAXHRAV6B27SZYV2EHWHZZKP \
  | 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: cadc0b9e20af83afcb38ae887b1f3953ca6b61aa65c072fd3aa6641d754fa013

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e29d7ad2b2743202af8d39f69d4066cd08fb4a185ec41dda3d07785f8524d4a1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-03-21T23:09:49Z",
    "title_canon_sha256": "63f6bac50ba818f7d118d4cfab52a0138240f4ad874f18b3ce75982933d2e7fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9703143",
    "kind": "arxiv",
    "version": 1
  }
}