Pith Number

pith:6BBRQTUK

pith:2017:6BBRQTUK7UNO4XUYWX2EBFO4AT

not attested not anchored not stored refs pending

The mean free path of hydrogen ionizing photons during the epoch of reionization

Alireza Rahmati, Joop Schaye

arxiv:1708.04238 v1 · 2017-08-14 · 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{6BBRQTUK7UNO4XUYWX2EBFO4AT}

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	2026-05-18T00:13:32.215687Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f043184e8afd1aee5e98b5f44095dc04e4da800238a63a82794f5d64f35839aa

Aliases

arxiv: 1708.04238 · arxiv_version: 1708.04238v1 · doi: 10.48550/arxiv.1708.04238 · pith_short_12: 6BBRQTUK7UNO · pith_short_16: 6BBRQTUK7UNO4XUY · pith_short_8: 6BBRQTUK

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/6BBRQTUK7UNO4XUYWX2EBFO4AT \
  | 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: f043184e8afd1aee5e98b5f44095dc04e4da800238a63a82794f5d64f35839aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c7795e2f03e4cd2817048d1c1f8daad5e97cd843c1b57bf6415a0a3345509b7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2017-08-14T18:00:00Z",
    "title_canon_sha256": "29a151f81d58685888c78daba1c547ad92d10a1fc66aea4c6c9297f2cc34db21"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.04238",
    "kind": "arxiv",
    "version": 1
  }
}