Pith Number

pith:NKVKRVX3

pith:2008:NKVKRVX3EBQ2SOYYLGERFE36GL

not attested not anchored not stored refs pending

Star-forming galaxies in SDSS: signs of metallicity evolution

A. Bongiovanni, A.M. Perez Garcia, H. Castaneda, J. Cepa, M.A. Lara-Lopez, M. Fernandez Lorenzo, M. Povic, M. Sanchez-Portal

arxiv:0812.2626 v1 · 2008-12-14 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NKVKRVX3EBQ2SOYYLGERFE36GL}

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	2026-07-04T17:13:53.938795Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6aaaa8d6fb2061a93b18598912937e32f93c02f116e29563578beda13facc709

Aliases

arxiv: 0812.2626 · arxiv_version: 0812.2626v1 · doi: 10.48550/arxiv.0812.2626 · pith_short_12: NKVKRVX3EBQ2 · pith_short_16: NKVKRVX3EBQ2SOYY · pith_short_8: NKVKRVX3

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/NKVKRVX3EBQ2SOYYLGERFE36GL \
  | 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: 6aaaa8d6fb2061a93b18598912937e32f93c02f116e29563578beda13facc709

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e9cf99617cb40a40f0469deabe2feabfac3a00c090236c548869ff4078064b6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-12-14T12:43:56Z",
    "title_canon_sha256": "5e2416e70c419b3352e5647fa67350658b5b6d8ff5dc754de3920f3e61707d2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.2626",
    "kind": "arxiv",
    "version": 1
  }
}