Pith Number

pith:UQRWBQXL

pith:2018:UQRWBQXLSELNTFSVZK7CTBFRXB

not attested not anchored not stored refs pending

A Tapered Gridded Estimator (TGE) for the Multi-Frequency Angular Power Spectrum (MAPS) and the Cosmological HI 21-cm Power Spectrum

Prasun Dutta, Samir Choudhuri, Somnath Bharadwaj, Srijita Pal

arxiv:1812.08801 v1 · 2018-12-20 · 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{UQRWBQXLSELNTFSVZK7CTBFRXB}

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	2026-05-17T23:55:18.732000Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a42360c2eb9116d99655cabe2984b1b8738493ecfd66f3b3eb6422ac510cc340

Aliases

arxiv: 1812.08801 · arxiv_version: 1812.08801v1 · doi: 10.48550/arxiv.1812.08801 · pith_short_12: UQRWBQXLSELN · pith_short_16: UQRWBQXLSELNTFSV · pith_short_8: UQRWBQXL

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/UQRWBQXLSELNTFSVZK7CTBFRXB \
  | 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: a42360c2eb9116d99655cabe2984b1b8738493ecfd66f3b3eb6422ac510cc340

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f18f99cf5bab9d1081083dbb88624cb9fda3c26176c6c3b2850b60071d0296c0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2018-12-20T19:00:12Z",
    "title_canon_sha256": "3712c49777dca9f0e7ca6f06edba818ae8c8e3c300edcd122c61c20a66a91af5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.08801",
    "kind": "arxiv",
    "version": 1
  }
}