Pith Number

pith:UWKP7TDT

pith:2011:UWKP7TDTMBLOXXCHJHTDECACLJ

not attested not anchored not stored refs pending

The impact of helium reionization on the structure of the intergalactic medium

A. Meiksin, E.R. Tittley (IfA, SUPA), University of Edinburgh

arxiv:1109.5037 v1 · 2011-09-23 · 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{UWKP7TDTMBLOXXCHJHTDECACLJ}

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	2026-05-18T02:00:26.109959Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a594ffcc736056ebdc4749e63208025a4f0bf288a9b5d58f5101f2547dcb19e6

Aliases

arxiv: 1109.5037 · arxiv_version: 1109.5037v1 · doi: 10.48550/arxiv.1109.5037 · pith_short_12: UWKP7TDTMBLO · pith_short_16: UWKP7TDTMBLOXXCH · pith_short_8: UWKP7TDT

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/UWKP7TDTMBLOXXCHJHTDECACLJ \
  | 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: a594ffcc736056ebdc4749e63208025a4f0bf288a9b5d58f5101f2547dcb19e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5090f7245a37def72bbb593069cec1d813eb27154d80de25258357661d92438d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-09-23T11:30:06Z",
    "title_canon_sha256": "ac04162d0d1d549ad240159162da858a566910fda180ee61b36eb9d0e19ff50c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.5037",
    "kind": "arxiv",
    "version": 1
  }
}