Pith Number

pith:KJDLW6JC

pith:2025:KJDLW6JCQWRIQSSPF6N7HAT3OD

not attested not anchored not stored refs pending

The CMB optical depth constrains the duration of reionization

Alexander van Engelen, Anson D'Aloisio, Christopher Cain, Darby Kramer, Garett Lopez, Kevin S. Croker

arxiv:2505.15899 v1 · 2025-05-21 · astro-ph.CO · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KJDLW6JCQWRIQSSPF6N7HAT3OD}

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.

Cited by

8 papers in Pith

Raising the reionization optical depth with inflationary CMB features

Fireworks at Cosmic Dawn: relieving BAO-CMB tensions with the Pop III.1 Flash

A self-consistent analytical model for both the photoionization rate and reionization history

A hidden reionization prior biases cosmological inference

Cosmological Concordance in an Especially Opaque Universe: A Tentative Cosmological Detection of Physical Neutrino Mass in $\Lambda$CDM

Receipt and verification

First computed	2026-07-05T11:07:27.252996Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5246bb792285a2884a4f2f9bf3827b70c4e0337c4964845106eda9e65f790a82

Aliases

arxiv: 2505.15899 · arxiv_version: 2505.15899v1 · doi: 10.48550/arxiv.2505.15899 · pith_short_12: KJDLW6JCQWRI · pith_short_16: KJDLW6JCQWRIQSSP · pith_short_8: KJDLW6JC

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/KJDLW6JCQWRIQSSPF6N7HAT3OD \
  | 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: 5246bb792285a2884a4f2f9bf3827b70c4e0337c4964845106eda9e65f790a82

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba57b623dc193b33268d0c0a4d66f198fdf919cbd0df46ea2c0777738fec3413",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2025-05-21T18:00:02Z",
    "title_canon_sha256": "b44b6aca520cd483d28ff0541258c86849b6ead80dedefda93eaa6395c85e1e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.15899",
    "kind": "arxiv",
    "version": 1
  }
}