Pith Number

pith:X5YIQQL4

pith:2019:X5YIQQL4JHRHJBEEXOSTMTYQIF

not attested not anchored not stored refs pending

Constraining the Tail-End of Reionization Using Lyman-$\alpha$ Transmission Spikes

Enrico Garaldi, Nickolay Gnedin, Piero Madau

arxiv:1902.07713 v2 · 2019-02-20 · 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{X5YIQQL4JHRHJBEEXOSTMTYQIF}

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	2026-05-17T23:46:52.847727Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf7088417c49e2748484bba5364f10416afa453658fd628e95a4fdf666bcb20f

Aliases

arxiv: 1902.07713 · arxiv_version: 1902.07713v2 · doi: 10.48550/arxiv.1902.07713 · pith_short_12: X5YIQQL4JHRH · pith_short_16: X5YIQQL4JHRHJBEE · pith_short_8: X5YIQQL4

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/X5YIQQL4JHRHJBEEXOSTMTYQIF \
  | 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: bf7088417c49e2748484bba5364f10416afa453658fd628e95a4fdf666bcb20f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b45d5f6d786a7ed76d40ff08642558f3e62f14a18a5963c5e0ba2ed42dddafcc",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2019-02-20T19:00:00Z",
    "title_canon_sha256": "5fa70ad7e71d158eaa293ee635641c79e84d8fdbd40f483c082840170064c1d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.07713",
    "kind": "arxiv",
    "version": 2
  }
}