Pith Number

pith:N2QXHQBH

pith:2019:N2QXHQBHIL2UJS34D2DAAAPRZK

not attested not anchored not stored refs pending

Metallicity and ionization state of the gas in polar-ring galaxies

Alexei V. Moiseev, Oleg V. Egorov

arxiv:1904.02513 v2 · 2019-04-04 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N2QXHQBHIL2UJS34D2DAAAPRZK}

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	2026-05-17T23:47:57.391392Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ea173c02742f544cb7c1e860001f1ca9d31d6c2e1cb9713ad80c9ec6f05e076

Aliases

arxiv: 1904.02513 · arxiv_version: 1904.02513v2 · doi: 10.48550/arxiv.1904.02513 · pith_short_12: N2QXHQBHIL2U · pith_short_16: N2QXHQBHIL2UJS34 · pith_short_8: N2QXHQBH

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/N2QXHQBHIL2UJS34D2DAAAPRZK \
  | 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: 6ea173c02742f544cb7c1e860001f1ca9d31d6c2e1cb9713ad80c9ec6f05e076

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5a72b7e2ad709e501d0e6a4a9a01e5c874d9949d01d146cd1f52b64cbebb43f",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-04-04T12:32:22Z",
    "title_canon_sha256": "7d16a8e84325bbde34eaedb5c4d696e4a28c3ed433ea9c0f43e8a890731f705f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.02513",
    "kind": "arxiv",
    "version": 2
  }
}