Pith Number

pith:MDJJPQNG

pith:2009:MDJJPQNGVMBCSVSSC563X55A66

not attested not anchored not stored refs pending

The environmental dependence of the red galaxy sequence

Argentina), CONICET-Observatorio Astronomico de Cordoba, Cordoba, Hector J. Martinez, Hernan Muriel (Instituto de Astronomia Teorica y Experimental, Valeria Coenda

arxiv:0912.1789 v1 · 2009-12-09 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MDJJPQNGVMBCSVSSC563X55A66}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:10:25.191109Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60d297c1a6ab02295652177dbbf7a0f790e45fb66802f808dde7a71594532c52

Aliases

arxiv: 0912.1789 · arxiv_version: 0912.1789v1 · doi: 10.48550/arxiv.0912.1789 · pith_short_12: MDJJPQNGVMBC · pith_short_16: MDJJPQNGVMBCSVSS · pith_short_8: MDJJPQNG

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/MDJJPQNGVMBCSVSSC563X55A66 \
  | 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: 60d297c1a6ab02295652177dbbf7a0f790e45fb66802f808dde7a71594532c52

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "66652a9e49d083a924840632b98e5d47c266f4c31e0c0688e4b18083a1b8f471",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-12-09T16:27:17Z",
    "title_canon_sha256": "83517e9d06de60f20378a336185abfa805fcd546e97fa81202bce10207aae03e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.1789",
    "kind": "arxiv",
    "version": 1
  }
}