Pith Number

pith:ND35E725

pith:2009:ND35E725YHMYZZ4GCCUQMOPCAN

not attested not anchored not stored refs pending

Dynamical masses of early-type galaxies at z~2: Are they truly superdense?

A. Cimatti, A. Franceschini, A. Renzini, E. Daddi, G. Rodighiero, G. Zamorani, J. D. Kurk, L. Pozzetti, M. Dickinson, Michele Cappellari, M. Mignoli, P. Cassata, P. Rosati, S. di Serego Alighieri

arxiv:0906.3648 v2 · 2009-06-19 · astro-ph.GA · 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{ND35E725YHMYZZ4GCCUQMOPCAN}

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	2026-07-04T15:53:22.820824Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68f7d27f5dc1d98ce78610a90639e203664599abbce16f1d4e0ece3d1b8b78ad

Aliases

arxiv: 0906.3648 · arxiv_version: 0906.3648v2 · doi: 10.48550/arxiv.0906.3648 · pith_short_12: ND35E725YHMY · pith_short_16: ND35E725YHMYZZ4G · pith_short_8: ND35E725

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/ND35E725YHMYZZ4GCCUQMOPCAN \
  | 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: 68f7d27f5dc1d98ce78610a90639e203664599abbce16f1d4e0ece3d1b8b78ad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ecd43a83c5bec8e4f962408255dc5276a91577e7c34d2a0bf0edacb263eb3c52",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-06-19T12:30:25Z",
    "title_canon_sha256": "a85158be2e5a4fac741116674493257ade3dc81a2fb66ddf403ea0ed3c2856f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.3648",
    "kind": "arxiv",
    "version": 2
  }
}