Pith Number

pith:WX3JUC4U

pith:2013:WX3JUC4UIYJSZJRZI62XOEDJVZ

not attested not anchored not stored refs pending

Probing the Dark Ages at Z~20: The SCI-HI 21 cm All-Sky Spectrum Experiment

Aravind Natarajan, Jeffrey B. Peterson, Jose Miguel Jauregui-Garcia, Omar Lopez-Cruz, Tabitha C. Voytek

arxiv:1311.0014 v2 · 2013-10-31 · astro-ph.CO · astro-ph.IM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WX3JUC4UIYJSZJRZI62XOEDJVZ}

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	2026-05-18T01:46:40.219511Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5f69a0b9446132ca63947b5771069ae66f9a0c3080a8b6a029704b543d379f3

Aliases

arxiv: 1311.0014 · arxiv_version: 1311.0014v2 · doi: 10.48550/arxiv.1311.0014 · pith_short_12: WX3JUC4UIYJS · pith_short_16: WX3JUC4UIYJSZJRZ · pith_short_8: WX3JUC4U

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/WX3JUC4UIYJSZJRZI62XOEDJVZ \
  | 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: b5f69a0b9446132ca63947b5771069ae66f9a0c3080a8b6a029704b543d379f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ccceaf29a8d1d25a4866e7d884a5d5cb77d2736a5f9f259c205620a704ce786a",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-10-31T20:00:15Z",
    "title_canon_sha256": "3668ce19ad4840a7b2db4541a3958084432df8b209f35a1d817ae6bfef0e8b77"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.0014",
    "kind": "arxiv",
    "version": 2
  }
}