Pith Number

pith:QHOAAF6V

pith:2010:QHOAAF6VFGSIGCYBTZGG6XJXSQ

not attested not anchored not stored refs pending

The Hubble Sequence in Groups: The Birth of the Early-Type Galaxies

C. M. Carollo, L. Mayer, R. Feldmann

arxiv:1008.3386 v2 · 2010-08-19 · 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{QHOAAF6VFGSIGCYBTZGG6XJXSQ}

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	2026-05-18T04:12:10.601797Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81dc0017d529a4830b019e4c6f5d379417457b3fb8abc526d0663c8288465864

Aliases

arxiv: 1008.3386 · arxiv_version: 1008.3386v2 · doi: 10.48550/arxiv.1008.3386 · pith_short_12: QHOAAF6VFGSI · pith_short_16: QHOAAF6VFGSIGCYB · pith_short_8: QHOAAF6V

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/QHOAAF6VFGSIGCYBTZGG6XJXSQ \
  | 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: 81dc0017d529a4830b019e4c6f5d379417457b3fb8abc526d0663c8288465864

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aefa757f56abc9df47137c5f31ef50dcc60d8143676a7c0e74c6567c9e650d84",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-08-19T20:00:24Z",
    "title_canon_sha256": "e79f681f561cba897fe8236155663e653ddc1d46379cf96df715e964cbbb917c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.3386",
    "kind": "arxiv",
    "version": 2
  }
}