Pith Number

pith:DADUEJOB

pith:2013:DADUEJOBPRDIC4DJCPXGYV3TXD

not attested not anchored not stored refs pending

Effective recombination coefficient and solar zenith angle effects on low-latitude D-region ionosphere evaluated from VLF signal amplitude and its time delay during X-ray solar flares

Sandip Kumar Chakrabarti, Tamal Basak

arxiv:1309.5460 v1 · 2013-09-21 · physics.space-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DADUEJOBPRDIC4DJCPXGYV3TXD}

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	2026-05-18T03:12:45.582597Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18074225c17c4681706913ee6c5773b8c1ac0c1d4fd88f060d57bd30cc009ee5

Aliases

arxiv: 1309.5460 · arxiv_version: 1309.5460v1 · doi: 10.48550/arxiv.1309.5460 · pith_short_12: DADUEJOBPRDI · pith_short_16: DADUEJOBPRDIC4DJ · pith_short_8: DADUEJOB

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/DADUEJOBPRDIC4DJCPXGYV3TXD \
  | 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: 18074225c17c4681706913ee6c5773b8c1ac0c1d4fd88f060d57bd30cc009ee5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d84e2a73e3a7042eefb93ef1b543ace16a961f17ad254fd1c721325b7914d9d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.space-ph",
    "submitted_at": "2013-09-21T11:04:03Z",
    "title_canon_sha256": "6e798294f193a4c651eff115ba89652928d5d3d176093243087a1f93d3b6a7ca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.5460",
    "kind": "arxiv",
    "version": 1
  }
}