Pith Number

pith:WXADWEME

pith:2018:WXADWEME2GTKBPBPEMYW2YXKKS

not attested not anchored not stored refs pending

Aligned metal absorbers and the ultraviolet background at the end of reionization

Benjamin D. Oppenheimer, Caitlin Doughty, Erik Zackrisson, Kristian Finlator, Romeel Dav\'e

arxiv:1801.06193 v1 · 2018-01-18 · astro-ph.GA · 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{WXADWEME2GTKBPBPEMYW2YXKKS}

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	2026-05-18T00:25:33.232227Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5c03b1184d1a6a0bc2f23316d62ea5499ae7ec5d5c0649dceedac85d9958959

Aliases

arxiv: 1801.06193 · arxiv_version: 1801.06193v1 · doi: 10.48550/arxiv.1801.06193 · pith_short_12: WXADWEME2GTK · pith_short_16: WXADWEME2GTKBPBP · pith_short_8: WXADWEME

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/WXADWEME2GTKBPBPEMYW2YXKKS \
  | 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: b5c03b1184d1a6a0bc2f23316d62ea5499ae7ec5d5c0649dceedac85d9958959

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e7a6c6ceb9855434a0c0f0756a74d517aedf8e5a3d8c48b7abff6d88d2ace17",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-01-18T19:00:22Z",
    "title_canon_sha256": "bc3eaf8dcb88a5f697336249ef8cccbe578a63dbc8c401410f0c131f3b0db139"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.06193",
    "kind": "arxiv",
    "version": 1
  }
}