Pith Number

pith:4SWLA7EC

pith:2013:4SWLA7ECBSVHACHDELMKB7BGUU

not attested not anchored not stored refs pending

Overcoming real-world obstacles in 21 cm power spectrum estimation: A method demonstration and results from early Murchison Widefield Array data

Adrian Liu, Alan M. Levine, Christopher L. Williams, Daniel A. Mitchell, David Emrich, Divya Oberoi, Edward H. Morgan, Frank H. Briggs, Gianni Bernardi, Jacqueline N. Hewitt, Joshua S. Dillon, Judd D. Bowman, Max Tegmark, Miguel F. Morales, Rachel L. Webster, Randall Wayth, Roger C. Cappallo, Steven J. Tingay, Thiagaraj Prabu

arxiv:1304.4229 v2 · 2013-04-15 · 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{4SWLA7ECBSVHACHDELMKB7BGUU}

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	2026-05-18T03:01:46.614907Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4acb07c820caa7008e322d8a0fc26a51140df822b52a76acf926118baf42f2d

Aliases

arxiv: 1304.4229 · arxiv_version: 1304.4229v2 · doi: 10.48550/arxiv.1304.4229 · pith_short_12: 4SWLA7ECBSVH · pith_short_16: 4SWLA7ECBSVHACHD · pith_short_8: 4SWLA7EC

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/4SWLA7ECBSVHACHDELMKB7BGUU \
  | 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: e4acb07c820caa7008e322d8a0fc26a51140df822b52a76acf926118baf42f2d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d9cc40dd00f1fb028b4322c5c9158b6bdf5233b27cf49364a0cdecd6b97581e7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-04-15T20:00:01Z",
    "title_canon_sha256": "bc27d9e7b8311ed0c7bf940e8116369ed4ac7c7c87da4fd2a1dd502c7d59a49c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.4229",
    "kind": "arxiv",
    "version": 2
  }
}