Pith Number

pith:QUZ4S4JE

pith:2012:QUZ4S4JE7B4XKDM6VMHRXSD7WA

not attested not anchored not stored refs pending

Ionised gas abundances in barred spiral galaxies

A. Zurita, E. Florido, I. P\'erez, P. S\'anchez-Bl\'azquez

arxiv:1204.6212 v1 · 2012-04-27 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QUZ4S4JE7B4XKDM6VMHRXSD7WA}

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	2026-05-18T01:57:43.224003Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8533c97124f879750d9eab0f1bc87fb00fdb1da5772b4d1f40971d93943de616

Aliases

arxiv: 1204.6212 · arxiv_version: 1204.6212v1 · doi: 10.48550/arxiv.1204.6212 · pith_short_12: QUZ4S4JE7B4X · pith_short_16: QUZ4S4JE7B4XKDM6 · pith_short_8: QUZ4S4JE

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/QUZ4S4JE7B4XKDM6VMHRXSD7WA \
  | 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: 8533c97124f879750d9eab0f1bc87fb00fdb1da5772b4d1f40971d93943de616

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17ce9f163aadc0983fa60d67e40e391e672530c780c17da88700058bf839a2d7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-04-27T13:38:34Z",
    "title_canon_sha256": "e88e1205b2686bb05315be7cdd0e4b7f823754ef99c9c73dee45fcbe5dccc29b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.6212",
    "kind": "arxiv",
    "version": 1
  }
}