Pith Number

pith:2PP4ZDPE

pith:2011:2PP4ZDPEATO67T6BKYJRCWMF4U

not attested not anchored not stored refs pending

Joint QSO-CMB constraints on reionization history

Andrea Ferrara, Sourav Mitra, T. Roy Choudhury

arxiv:1106.4034 v2 · 2011-06-20 · 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{2PP4ZDPEATO67T6BKYJRCWMF4U}

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	2026-05-18T02:01:34.412611Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3dfcc8de404ddefcfc15613115985e528ffee1f8ad8bf31322f4ced54b011af

Aliases

arxiv: 1106.4034 · arxiv_version: 1106.4034v2 · doi: 10.48550/arxiv.1106.4034 · pith_short_12: 2PP4ZDPEATO6 · pith_short_16: 2PP4ZDPEATO67T6B · pith_short_8: 2PP4ZDPE

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/2PP4ZDPEATO67T6BKYJRCWMF4U \
  | 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: d3dfcc8de404ddefcfc15613115985e528ffee1f8ad8bf31322f4ced54b011af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c73d5ee8f1d260f71a2bcbd55c020bbb20b54452b7e52c3b0a11e6ab525665a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-06-20T20:27:57Z",
    "title_canon_sha256": "e5decf375092e25a1be82e3a06499df04a08d8e80110241acaaa5656151765dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.4034",
    "kind": "arxiv",
    "version": 2
  }
}