Pith Number

pith:PP4LYXPP

pith:2012:PP4LYXPPQFAFNNZHHMY3TJCSSO

not attested not anchored not stored refs pending

Deep multiband surface photometry on star forming galaxies: II. A volume limited sample of 21 emission lines galaxies

Erik Zackrisson, Florence Durret, Genoveva Micheva, G\"oran \"Ostlin, Isabel Marquez, Josefa Masegosa, Nils Bergvall, Robert Cumming, Thomas Marquart

arxiv:1208.5468 v1 · 2012-08-27 · 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{PP4LYXPPQFAFNNZHHMY3TJCSSO}

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	2026-05-18T01:54:51.243733Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bf8bc5def814056b7273b31b9a45293852058bffff13caac193fbc38a474ef8

Aliases

arxiv: 1208.5468 · arxiv_version: 1208.5468v1 · doi: 10.48550/arxiv.1208.5468 · pith_short_12: PP4LYXPPQFAF · pith_short_16: PP4LYXPPQFAFNNZH · pith_short_8: PP4LYXPP

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/PP4LYXPPQFAFNNZHHMY3TJCSSO \
  | 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: 7bf8bc5def814056b7273b31b9a45293852058bffff13caac193fbc38a474ef8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a446fea1d0ce4d2910a83463c8fb3e7c22815f6a3587952c18fdfa185351567",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-08-27T19:02:33Z",
    "title_canon_sha256": "c258d73db345fddcae06621dda3ea29002f0beb05085043720f077276e7657b6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.5468",
    "kind": "arxiv",
    "version": 1
  }
}