Pith Number

pith:AYLO7B2D

pith:2005:AYLO7B2DKYUKLMLVQUCPZC3TZG

not attested not anchored not stored refs pending

Monitoring of Sudden Ionospheric Disturbances (SID) from Kolkata (INDIA)

A. Chatterjee, B. Bose, K. Acharyya, N.M. Nandi, R. Khan, Sandip K. Chakrabarti, S. Mandal, S. Pal

arxiv:astro-ph/0501289 v1 · 2005-01-14 · astro-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{AYLO7B2DKYUKLMLVQUCPZC3TZG}

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	2026-07-04T14:14:02.598700Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0616ef87435628a5b1758504fc8b73c990c2727b3da376e8499ba21cf39c9d5b

Aliases

arxiv: astro-ph/0501289 · arxiv_version: astro-ph/0501289v1 · doi: 10.48550/arxiv.astro-ph/0501289 · pith_short_12: AYLO7B2DKYUK · pith_short_16: AYLO7B2DKYUKLMLV · pith_short_8: AYLO7B2D

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/AYLO7B2DKYUKLMLVQUCPZC3TZG \
  | 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: 0616ef87435628a5b1758504fc8b73c990c2727b3da376e8499ba21cf39c9d5b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f10e575f4e8c84ba0bb17290371d8b98c51629e2f1264d3ef62dd6062f1f30a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-01-14T14:13:15Z",
    "title_canon_sha256": "200c4af044e4184f2a03aeafd0ee25577f7416b42a22dcac865cf17f449938c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0501289",
    "kind": "arxiv",
    "version": 1
  }
}