Pith Number

pith:NPPTD7TZ

pith:2011:NPPTD7TZQ4HJ3GLGO4KCI4TKPK

not attested not anchored not stored refs pending

First VLF detections of ionospheric disturbances due to Soft Gamma ray Repeater SGR J1550-5418 and Gamma Ray Burst GRB 090424

Asit K. Chowdhuri, Debashis Bhowmick, Narendra N. Patra, Sandip K. Chakrabarti, Sudipta Sasmal, Sushanta K. Mondal

arxiv:1104.1763 v1 · 2011-04-10 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NPPTD7TZQ4HJ3GLGO4KCI4TKPK}

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	2026-05-18T02:02:35.900976Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bdf31fe79870e9d9966771424726a7a8722016910f646207bbe053ebf318618

Aliases

arxiv: 1104.1763 · arxiv_version: 1104.1763v1 · doi: 10.48550/arxiv.1104.1763 · pith_short_12: NPPTD7TZQ4HJ · pith_short_16: NPPTD7TZQ4HJ3GLG · pith_short_8: NPPTD7TZ

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/NPPTD7TZQ4HJ3GLGO4KCI4TKPK \
  | 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: 6bdf31fe79870e9d9966771424726a7a8722016910f646207bbe053ebf318618

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8406dc99982801a5cb5037de0a8762b703d3b91f8096e6ccfb55106730f9d2fd",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-04-10T11:52:01Z",
    "title_canon_sha256": "b2390be8143d1dc1b3dea14577c114a7b1e1b0f98b76ce98f50e7b40c34c315e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.1763",
    "kind": "arxiv",
    "version": 1
  }
}