Pith Number

pith:LUVUZCDP

pith:2009:LUVUZCDP4KX6GN7VFX64UMQ6TD

not attested not anchored not stored refs pending

Do blue compact galaxies have red halos?

E. Zackrisson, G. Micheva, G. Ostlin, N. Bergvall

arxiv:0902.4695 v1 · 2009-02-26 · 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{LUVUZCDP4KX6GN7VFX64UMQ6TD}

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	2026-07-04T15:38:50.881569Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5d2b4c886fe2afe337f52dfdca321e98e3e1a0204566becd52f35f9469d5c713

Aliases

arxiv: 0902.4695 · arxiv_version: 0902.4695v1 · doi: 10.48550/arxiv.0902.4695 · pith_short_12: LUVUZCDP4KX6 · pith_short_16: LUVUZCDP4KX6GN7V · pith_short_8: LUVUZCDP

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/LUVUZCDP4KX6GN7VFX64UMQ6TD \
  | 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: 5d2b4c886fe2afe337f52dfdca321e98e3e1a0204566becd52f35f9469d5c713

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "58cc3c76fa35c4d4f3dfe0ee3a276750d68ec40a617f9ba07444c9ee37fcd1a0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-02-26T21:00:02Z",
    "title_canon_sha256": "acb45c08056346729d95f2e445c7df1ebbf8006a646af8c5161c0c15f79cc07f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.4695",
    "kind": "arxiv",
    "version": 1
  }
}