Pith Number

pith:TYVA7ABO

pith:2011:TYVA7ABOOBEBAKUGXLGVZL3NKM

not attested not anchored not stored refs pending

The similar stellar populations of quiescent spiral and elliptical galaxies

Aday R. Robaina, Anna Gallazzi, Arjen van der Wel, Ben Hoyle, Licia Verde, Raul Jimenez

arxiv:1109.5352 v2 · 2011-09-25 · 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{TYVA7ABOOBEBAKUGXLGVZL3NKM}

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	2026-05-18T02:00:25.481883Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e2a0f802e7048102a86bacd5caf6d532f6e25e8aec55b57f1948455aeb64044

Aliases

arxiv: 1109.5352 · arxiv_version: 1109.5352v2 · doi: 10.48550/arxiv.1109.5352 · pith_short_12: TYVA7ABOOBEB · pith_short_16: TYVA7ABOOBEBAKUG · pith_short_8: TYVA7ABO

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/TYVA7ABOOBEBAKUGXLGVZL3NKM \
  | 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: 9e2a0f802e7048102a86bacd5caf6d532f6e25e8aec55b57f1948455aeb64044

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02d41c141194360701be6228b0c3816b742366793d1a50d54c8aaa2d84faa226",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-09-25T12:34:57Z",
    "title_canon_sha256": "367ff888f47f0fbc389a594907d5e24ca859d3ac1b987177b7f95b9fc2728f94"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.5352",
    "kind": "arxiv",
    "version": 2
  }
}