Pith Number

pith:A467HU7H

pith:2015:A467HU7H3HIIYCWJ6HX6MUCWE5

not attested not anchored not stored refs pending

Chemical abundances from planetary nebulae in local spiral galaxies

M. G. Richer, M. L. McCall

arxiv:1509.08537 v1 · 2015-09-28 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A467HU7H3HIIYCWJ6HX6MUCWE5}

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	2026-05-18T01:31:52.390219Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

073df3d3e7d9d08c0ac9f1efe650562752c38b8ad64b2a563e51f5ec6be4c9ca

Aliases

arxiv: 1509.08537 · arxiv_version: 1509.08537v1 · doi: 10.48550/arxiv.1509.08537 · pith_short_12: A467HU7H3HII · pith_short_16: A467HU7H3HIIYCWJ · pith_short_8: A467HU7H

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/A467HU7H3HIIYCWJ6HX6MUCWE5 \
  | 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: 073df3d3e7d9d08c0ac9f1efe650562752c38b8ad64b2a563e51f5ec6be4c9ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6a987e36cad450f8203cfdcf406fefcc55eaf5b243f20ce1e9f05142c317115",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-09-28T23:15:01Z",
    "title_canon_sha256": "09f0ac2f4d226efbae1224ad1ffffe951d3528c88ef64fa8efbf5b43e3f56d9d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.08537",
    "kind": "arxiv",
    "version": 1
  }
}