Pith Number

pith:QJOETWAG

pith:2009:QJOETWAG6WVCW5EI2HBLKBCBUE

not attested not anchored not stored refs pending

On the formation of massive galaxies: A simultaneous study of number density, size and intrinsic colour evolution in GOODS

(2) ARI/Zentrum f\"ur Astronomie, (3) MPIA, (4) MPE, 5) ((1) MSSL-UCL, (5) Oxford), Anna Pasquali (3), Garching, Heidelberg, Ignacio Ferreras (1), Sadegh Khochfar (4), Sugata Kaviraj (1, Thorsten Lisker (2)

arxiv:0901.4555 v1 · 2009-01-28 · 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{QJOETWAG6WVCW5EI2HBLKBCBUE}

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	2026-05-18T02:14:55.365667Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

825c49d806f5aa2b7488d1c2b50441a1030b1de5d250a2d3684a3d1a2835fbb5

Aliases

arxiv: 0901.4555 · arxiv_version: 0901.4555v1 · doi: 10.48550/arxiv.0901.4555 · pith_short_12: QJOETWAG6WVC · pith_short_16: QJOETWAG6WVCW5EI · pith_short_8: QJOETWAG

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/QJOETWAG6WVCW5EI2HBLKBCBUE \
  | 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: 825c49d806f5aa2b7488d1c2b50441a1030b1de5d250a2d3684a3d1a2835fbb5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a87f77627a0df2a2990463908f6fa2cca8f40479d41c79a37f87000ba24f48c",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-01-28T21:09:50Z",
    "title_canon_sha256": "bc51824da3c58f88a6c97fb48c127ac482e2defda1461dca7db6efb3167e801f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.4555",
    "kind": "arxiv",
    "version": 1
  }
}