Pith Number

pith:4ZZEM7HY

pith:2011:4ZZEM7HYCNPR77TZ3INRF6TL6T

not attested not anchored not stored refs pending

The morphologies and masses of extremely red galaxies in the Groth Strip survey

Angela Hempel, Carlos L\'opez-Sanjuan, Carmen Eliche-Moral, David Abreu, David Crist\'obal-Hornillos, Ignacio Trujillo, Lilian Dom\'inguez-Palmero, Marc Balcells, Mercedes Prieto

arxiv:1102.3302 v1 · 2011-02-16 · 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{4ZZEM7HYCNPR77TZ3INRF6TL6T}

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	2026-05-18T02:03:10.534097Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e672467cf8135f1ffe79da1b12fa6bf4f67339dcf8544d475e6be430f8218eaa

Aliases

arxiv: 1102.3302 · arxiv_version: 1102.3302v1 · doi: 10.48550/arxiv.1102.3302 · pith_short_12: 4ZZEM7HYCNPR · pith_short_16: 4ZZEM7HYCNPR77TZ · pith_short_8: 4ZZEM7HY

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/4ZZEM7HYCNPR77TZ3INRF6TL6T \
  | 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: e672467cf8135f1ffe79da1b12fa6bf4f67339dcf8544d475e6be430f8218eaa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0c5d5877a296749fe8fbcd444c724b30ce11487f65e497dcb389f9d38b7a3c2",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-02-16T11:07:26Z",
    "title_canon_sha256": "cfdf3a5781a2b55556672964bab1bbbd836472fdffae41b1b4077fde963d2f29"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.3302",
    "kind": "arxiv",
    "version": 1
  }
}