Pith Number

pith:L4GJBIRB

pith:2011:L4GJBIRBNAQ2ZW3A62YNUA4DT2

not attested not anchored not stored refs pending

Optical-NIR spectra of quasars close to reionization (z~ 6)

A. Cimatti, A. Fontana, A. Marconi, E. Giallongo, F. Fiore, F. Mannucci, G. Cupani, G. Vladilo, L. Pentericci, M. Nonino, M. Viel, P. Molaro, R. Maiolino, S. Cristiani, S. di Serego Alighieri, S. Gallerani, V. D'Odorico

arxiv:1101.1948 v2 · 2011-01-10 · 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{L4GJBIRBNAQ2ZW3A62YNUA4DT2}

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	2026-05-18T04:26:46.661053Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f0c90a2216821acdb60f6b0da03839eb8eeabaf00cd13f2dc60782eb22fa5f1

Aliases

arxiv: 1101.1948 · arxiv_version: 1101.1948v2 · doi: 10.48550/arxiv.1101.1948 · pith_short_12: L4GJBIRBNAQ2 · pith_short_16: L4GJBIRBNAQ2ZW3A · pith_short_8: L4GJBIRB

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/L4GJBIRBNAQ2ZW3A62YNUA4DT2 \
  | 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: 5f0c90a2216821acdb60f6b0da03839eb8eeabaf00cd13f2dc60782eb22fa5f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26f6bf42c9354f3100ab10c59f36600f1d56601693ec3fd21143232cc4e33b66",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-01-10T20:50:17Z",
    "title_canon_sha256": "3e317e1f90ff5ee1ca0596ab0d72e2b15e518f98c113e8011896ad8a38cb5897"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.1948",
    "kind": "arxiv",
    "version": 2
  }
}