Pith Number

pith:EC6NAHBC

pith:2018:EC6NAHBC4JH646IT63GD6V7OGO

not attested not anchored not stored refs pending

The frequency of very young galaxies in the local Universe: I. A test for galaxy formation and cosmological models

Andrea Cattaneo, Avishai Dekel, Dylan P. Tweed, Francesco Calura, Gary A. Mamon, Jospeh Silk, Nicola Menci, Trinh X. Thuan

arxiv:1802.09530 v1 · 2018-02-26 · astro-ph.GA · 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{EC6NAHBC4JH646IT63GD6V7OGO}

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	2026-05-17T23:55:59.425454Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20bcd01c22e24fee7913f6cc3f57ee338af32db8fb3c07a4814759095f8e4a01

Aliases

arxiv: 1802.09530 · arxiv_version: 1802.09530v1 · doi: 10.48550/arxiv.1802.09530 · pith_short_12: EC6NAHBC4JH6 · pith_short_16: EC6NAHBC4JH646IT · pith_short_8: EC6NAHBC

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/EC6NAHBC4JH646IT63GD6V7OGO \
  | 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: 20bcd01c22e24fee7913f6cc3f57ee338af32db8fb3c07a4814759095f8e4a01

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "839f8473f1ccc6b81b9bbd3a3c85b10931586420d04ac8b8e15396856d484cb1",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-02-26T19:00:00Z",
    "title_canon_sha256": "4fce7d47005f3f927ec0254dcf7922d210d8f0d147c5b21cb87a8efab13f10d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.09530",
    "kind": "arxiv",
    "version": 1
  }
}