Pith Number

pith:IU4SYZ4Q

pith:2012:IU4SYZ4Q432NUGQV47G5GSLPPY

not attested not anchored not stored refs pending

Chemical abundances in M31 from HII regions

Almudena Zurita, Fabio Bresolin

arxiv:1209.1505 v1 · 2012-09-07 · 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{IU4SYZ4Q432NUGQV47G5GSLPPY}

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	2026-05-18T01:54:38.777901Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45392c6790e6f4da1a15e7cdd3496f7e08c1224e0aa0609ae37d74538c6387fd

Aliases

arxiv: 1209.1505 · arxiv_version: 1209.1505v1 · doi: 10.48550/arxiv.1209.1505 · pith_short_12: IU4SYZ4Q432N · pith_short_16: IU4SYZ4Q432NUGQV · pith_short_8: IU4SYZ4Q

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/IU4SYZ4Q432NUGQV47G5GSLPPY \
  | 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: 45392c6790e6f4da1a15e7cdd3496f7e08c1224e0aa0609ae37d74538c6387fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "522fe8e1f29f4a12d782295d970f87a927b173fc391dfde4ffcf17b2f7adde7c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-09-07T11:53:29Z",
    "title_canon_sha256": "51d4d0e78b87c860602f9b31d24797ba6610a04be88f1e5d8d21a43ae82642cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.1505",
    "kind": "arxiv",
    "version": 1
  }
}