Pith Number

pith:QZHANTUP

pith:2010:QZHANTUPQMFMFGYO7QJYSQBOTC

not attested not anchored not stored refs pending

Keck Spectroscopy of z>1 Field Spheroidals: Dynamical Constraints on the Growth Rate of Red "Nuggets"

Andrew B. Newman, Kevin Bundy, Richard S. Ellis, Tommaso Treu

arxiv:1004.1331 v2 · 2010-04-08 · 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{QZHANTUPQMFMFGYO7QJYSQBOTC}

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	2026-05-18T02:08:07.930177Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

864e06ce8f830ac29b0efc1389402e98826f2fe455d403265cdc7e16e9fd09e9

Aliases

arxiv: 1004.1331 · arxiv_version: 1004.1331v2 · doi: 10.48550/arxiv.1004.1331 · pith_short_12: QZHANTUPQMFM · pith_short_16: QZHANTUPQMFMFGYO · pith_short_8: QZHANTUP

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/QZHANTUPQMFMFGYO7QJYSQBOTC \
  | 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: 864e06ce8f830ac29b0efc1389402e98826f2fe455d403265cdc7e16e9fd09e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ddaa22f202a64f54b9d8187b579e16fdea6628ce085d8c943a9b563189d5bc41",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-04-08T13:23:15Z",
    "title_canon_sha256": "c0a33cc939d0f9a9df918e1195cc692f5c81896cbe893cf22e63531846aedd5e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.1331",
    "kind": "arxiv",
    "version": 2
  }
}