Pith Number

pith:GIF4WUFV

pith:2013:GIF4WUFVKBO32HTRJFRZYMNHXC

not attested not anchored not stored refs pending

Direct Numerical Simulation of Reionization II: Recombinations, Clumping Factors, and the Photon Budget for Reionization

Daniel R. Reynolds, Geoffrey C. So, Michael L. Norman, Robert P. Harkness

arxiv:1311.2152 v1 · 2013-11-09 · 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{GIF4WUFVKBO32HTRJFRZYMNHXC}

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	2026-05-18T01:46:32.684995Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

320bcb50b5505dbd1e7149639c31a7b88dcbce7884f5ce875744cef15690525f

Aliases

arxiv: 1311.2152 · arxiv_version: 1311.2152v1 · doi: 10.48550/arxiv.1311.2152 · pith_short_12: GIF4WUFVKBO3 · pith_short_16: GIF4WUFVKBO32HTR · pith_short_8: GIF4WUFV

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/GIF4WUFVKBO32HTRJFRZYMNHXC \
  | 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: 320bcb50b5505dbd1e7149639c31a7b88dcbce7884f5ce875744cef15690525f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "31a7176814fa3b14a2b4ba888553b5884ca6a8230afbd248680932340c506b38",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-11-09T08:54:51Z",
    "title_canon_sha256": "74026caea546f3d0b782235e45328434c95073d7fc07e83647ba6c23fcd5094f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.2152",
    "kind": "arxiv",
    "version": 1
  }
}