Pith Number

pith:A547QA6O

pith:2010:A547QA6ORIX5L6MDKRQ3CUGUMT

not attested not anchored not stored refs pending

HI 21 cm opacity fluctuations power spectra towards Cassiopeia A

Jayaram N. Chengalur, Nirupam Roy, Prasun Dutta, Somnath Bharadwaj

arxiv:1002.4192 v2 · 2010-02-22 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A547QA6ORIX5L6MDKRQ3CUGUMT}

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	2026-05-18T04:41:05.119354Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0779f803ce8a2fd5f9835461b150d464f0257b142b3f4a81037ac7a03407b669

Aliases

arxiv: 1002.4192 · arxiv_version: 1002.4192v2 · doi: 10.48550/arxiv.1002.4192 · pith_short_12: A547QA6ORIX5 · pith_short_16: A547QA6ORIX5L6MD · pith_short_8: A547QA6O

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/A547QA6ORIX5L6MDKRQ3CUGUMT \
  | 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: 0779f803ce8a2fd5f9835461b150d464f0257b142b3f4a81037ac7a03407b669

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "00966af629cf617029e2d781fc145eac54ac2fd6e50c501613d1a58c5c48722d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2010-02-22T21:00:30Z",
    "title_canon_sha256": "533d717645ed14321dc30bf18d73b63a3a124a220e4618853cbb4dd502294040"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.4192",
    "kind": "arxiv",
    "version": 2
  }
}