Pith Number

pith:P4QX6NUO

pith:2016:P4QX6NUOZF4PWNDLJ54ESKQESV

not attested not anchored not stored refs pending

Intergalactic Lyman continuum photon budget in the past 5 billion years

Prakash Gaikwad, Raghunathan Srianand, Tirthankar Roy Choudhury, Vikram Khaire

arxiv:1605.02738 v2 · 2016-05-09 · 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{P4QX6NUOZF4PWNDLJ54ESKQESV}

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

1 paper in Pith

A Measurement of the Thermal and Ionization State of the IGM at $z < 0.5$

Receipt and verification

First computed	2026-05-18T00:47:59.044768Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f217f368ec978fb346b4f78492a0495630a5cfe6b7f2c20e6e7bc7b3e926f65

Aliases

arxiv: 1605.02738 · arxiv_version: 1605.02738v2 · doi: 10.48550/arxiv.1605.02738 · pith_short_12: P4QX6NUOZF4P · pith_short_16: P4QX6NUOZF4PWNDL · pith_short_8: P4QX6NUO

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/P4QX6NUOZF4PWNDLJ54ESKQESV \
  | 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: 7f217f368ec978fb346b4f78492a0495630a5cfe6b7f2c20e6e7bc7b3e926f65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "333f4b4f8cbdb70ec506a9bf2f1f462a71d08bfad4c5f7900e5430731ded7d2b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2016-05-09T20:00:04Z",
    "title_canon_sha256": "df65acdab305f7481e31d24bd10726077a42b8b6d256eeb788269dc8c73b7d86"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.02738",
    "kind": "arxiv",
    "version": 2
  }
}