Pith Number

pith:SPSAXZMH

pith:1994:SPSAXZMHBCZQIGGQLMR6BQJP7P

not attested not anchored not stored refs pending

Nuclear bars and blue nuclei within barred spiral galaxies

D. Axon, I. Gatley, M. Shaw, R. Probst

arxiv:astro-ph/9412057 v1 · 1994-12-16 · 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{SPSAXZMHBCZQIGGQLMR6BQJP7P}

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	2026-05-18T01:40:24.006433Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93e40be58708b30418d05b23e0c12ffbf6549a2c602b6c06a90c455899007660

Aliases

arxiv: astro-ph/9412057 · arxiv_version: astro-ph/9412057v1 · doi: 10.48550/arxiv.astro-ph/9412057 · pith_short_12: SPSAXZMHBCZQ · pith_short_16: SPSAXZMHBCZQIGGQ · pith_short_8: SPSAXZMH

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/SPSAXZMHBCZQIGGQLMR6BQJP7P \
  | 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: 93e40be58708b30418d05b23e0c12ffbf6549a2c602b6c06a90c455899007660

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b58933dec67ebc1c88d16737a45f7621fcb31356a8625166ee62890497f39683",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1994-12-16T12:11:55Z",
    "title_canon_sha256": "c0a63ded9be61c6900ce9955c2e7f8c01f75dbbdf84fe3cb0eb3ba5fdebc7d68"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9412057",
    "kind": "arxiv",
    "version": 1
  }
}