Pith Number

pith:I4PUIKN4

pith:2010:I4PUIKN4NGQ2MNLNIOIVJIRIM7

not attested not anchored not stored refs pending

The redshift evolution of oxygen and nitrogen abundances in emission-line SDSS galaxies

I.A.Zinchenko, L.S.Pilyugin, T.X.Thuan

arxiv:1002.3486 v1 · 2010-02-18 · astro-ph.CO · 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{I4PUIKN4NGQ2MNLNIOIVJIRIM7}

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	2026-05-18T02:08:59.667409Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

471f4429bc69a1a6356d439154a22867f48d60f8af6113bb903da3aed151fced

Aliases

arxiv: 1002.3486 · arxiv_version: 1002.3486v1 · doi: 10.48550/arxiv.1002.3486 · pith_short_12: I4PUIKN4NGQ2 · pith_short_16: I4PUIKN4NGQ2MNLN · pith_short_8: I4PUIKN4

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/I4PUIKN4NGQ2MNLNIOIVJIRIM7 \
  | 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: 471f4429bc69a1a6356d439154a22867f48d60f8af6113bb903da3aed151fced

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc1b323010f797b6b049928a2ba258e28aae8f9771deb9711c367b1a926110d1",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-02-18T10:58:54Z",
    "title_canon_sha256": "4f30218843782e873bd4df1bc33f95e2ac336fa1706becfa388ae8fd924725df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.3486",
    "kind": "arxiv",
    "version": 1
  }
}