Pith Number

pith:PQ6RMZBO

pith:2008:PQ6RMZBONTB6P53D5SDRERN6ON

not attested not anchored not stored refs pending

Massive, red galaxies in a hierarchical universe I. Counts of Extremely Red Objects and basic properties

C. Almeida, C.G. Lacey, C.M. Baugh, V. Gonzalez-Perez

arxiv:0811.2134 v2 · 2008-11-13 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PQ6RMZBONTB6P53D5SDRERN6ON}

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	2026-05-18T02:15:21.244481Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c3d16642e6cc3e7f763ec871245be736b534c52fd9cfa44b8e8b605addc32ab

Aliases

arxiv: 0811.2134 · arxiv_version: 0811.2134v2 · doi: 10.48550/arxiv.0811.2134 · pith_short_12: PQ6RMZBONTB6 · pith_short_16: PQ6RMZBONTB6P53D · pith_short_8: PQ6RMZBO

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/PQ6RMZBONTB6P53D5SDRERN6ON \
  | 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: 7c3d16642e6cc3e7f763ec871245be736b534c52fd9cfa44b8e8b605addc32ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bcf291c51b240333db678795bf9877f93ebc357225688a7685b9a184f7f405f7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-11-13T18:39:37Z",
    "title_canon_sha256": "06f8a007e843a7ea80e82d81ab855ca46b5ddce6a84c2eb97a3aa50d8e560d6e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0811.2134",
    "kind": "arxiv",
    "version": 2
  }
}