Pith Number

pith:HG4OA2I4

pith:2020:HG4OA2I4M7JGJT5BQRYUL5HEXK

not attested not anchored not stored refs pending

The evolution of the low-density HI intergalactic medium from z=3.6 to 0: Data, transmitted flux and HI column density

Andrew J. Fox, Bart P. Wakker, Ben E. Rosenwasser, Blair D. Savage, Fahad Nasir, James S. Bolton, Jane C. Charlton, Martin G. Haehnelt, Matteo Viel, Robert F. Carswell, Tae-Sun Kim

arxiv:2012.05861 v1 · 2020-12-10 · 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{HG4OA2I4M7JGJT5BQRYUL5HEXK}

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

Receipt and verification

First computed	2026-07-05T02:01:18.765547Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39b8e0691c67d264cfa1847145f4e4ba87f6c2dc02097bed069e125cf5908ba9

Aliases

arxiv: 2012.05861 · arxiv_version: 2012.05861v1 · doi: 10.48550/arxiv.2012.05861 · pith_short_12: HG4OA2I4M7JG · pith_short_16: HG4OA2I4M7JGJT5B · pith_short_8: HG4OA2I4

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/HG4OA2I4M7JGJT5BQRYUL5HEXK \
  | 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: 39b8e0691c67d264cfa1847145f4e4ba87f6c2dc02097bed069e125cf5908ba9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b481bd5724060540d2dbceb0680ec5d3c81a88d2c8cdcb163516e2c8113f9d42",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2020-12-10T18:18:50Z",
    "title_canon_sha256": "93d45594883b54189d86a8b3b17cca9d670ae97863b1b9fdcdae14de48cca7af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.05861",
    "kind": "arxiv",
    "version": 1
  }
}