Pith Number

pith:A2AQBU7I

pith:2019:A2AQBU7I6PPFCUN4EFLPJRYC3C

not attested not anchored not stored refs pending

Deep into the structure of the first galaxies: SERRA views

A. Ferrara, A. Pallottini, C. Behrens, D Decataldo, L. Vallini, M. Kohandel, S. Carniani, S. Gallerani, S. Salvadori

arxiv:1905.08254 v1 · 2019-05-20 · 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{A2AQBU7I6PPFCUN4EFLPJRYC3C}

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	2026-05-17T23:44:53.724845Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

068100d3e8f3de5151bc2156f4c702d8a3f158e4c10cdf02ebd5fbb2138ae402

Aliases

arxiv: 1905.08254 · arxiv_version: 1905.08254v1 · doi: 10.48550/arxiv.1905.08254 · pith_short_12: A2AQBU7I6PPF · pith_short_16: A2AQBU7I6PPFCUN4 · pith_short_8: A2AQBU7I

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/A2AQBU7I6PPFCUN4EFLPJRYC3C \
  | 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: 068100d3e8f3de5151bc2156f4c702d8a3f158e4c10cdf02ebd5fbb2138ae402

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "527085ffb0e80b7acc37f599a6686620ec5c5656e2de3551196b74e9d52cc862",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-05-20T18:00:01Z",
    "title_canon_sha256": "e91015a113000b06a732d248e034be758d5bc259a7d904dfd12198cae8092aaf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.08254",
    "kind": "arxiv",
    "version": 1
  }
}