Pith Number

pith:PU5OCWFE

pith:2009:PU5OCWFEBKOEB6DQVZ37KPPOXM

not attested not anchored not stored refs pending

Compact High-Redshift Galaxies Are the Cores of the Most Massive Present-Day Spheroids

(2) CITA, (3) NOAO), Chung-Pei Ma (1) ((1) Berkeley, Eliot Quataert (1), Kevin Bundy (1), Norman Murray (2), Philip F. Hopkins (1), Tod Lauer (3)

arxiv:0903.2479 v2 · 2009-03-13 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PU5OCWFEBKOEB6DQVZ37KPPOXM}

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	2026-05-18T02:14:28.322644Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d3ae158a40a9c40f870ae77f53deebb333abf508deaea6f85521dbbaf7159f5

Aliases

arxiv: 0903.2479 · arxiv_version: 0903.2479v2 · doi: 10.48550/arxiv.0903.2479 · pith_short_12: PU5OCWFEBKOE · pith_short_16: PU5OCWFEBKOEB6DQ · pith_short_8: PU5OCWFE

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/PU5OCWFEBKOEB6DQVZ37KPPOXM \
  | 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: 7d3ae158a40a9c40f870ae77f53deebb333abf508deaea6f85521dbbaf7159f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3b4831d93ab54fa7983cf5f1c3a0fe602524d64efcbec14d8cc7ec2bc0e3ebc",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-03-13T20:03:55Z",
    "title_canon_sha256": "287a65b73a776f3683ff426e516489604f369e78c733b95f348d191dd6d4d1d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.2479",
    "kind": "arxiv",
    "version": 2
  }
}