Pith Number

pith:TPN24JRI

pith:2012:TPN24JRI42TXI2N6RQBF5W2HP7

not attested not anchored not stored refs pending

Monthly sunspot number time series analysis and its modeling through autoregressive artificial neural network

Goutami Chattopadhyay, Surajit Chattopadhyay (Pailan College of Management, Technology)

arxiv:1204.3991 v1 · 2012-04-18 · physics.gen-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{TPN24JRI42TXI2N6RQBF5W2HP7}

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	2026-05-18T03:57:38.054232Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9bdbae2628e6a77469be8c025edb477ffb5aac6de5fd5959453c34166e5271fa

Aliases

arxiv: 1204.3991 · arxiv_version: 1204.3991v1 · doi: 10.48550/arxiv.1204.3991 · pith_short_12: TPN24JRI42TX · pith_short_16: TPN24JRI42TXI2N6 · pith_short_8: TPN24JRI

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/TPN24JRI42TXI2N6RQBF5W2HP7 \
  | 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: 9bdbae2628e6a77469be8c025edb477ffb5aac6de5fd5959453c34166e5271fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ca5c64436cdf6149fd39f895e4f05760d7e9be904ab6785b367f62a24e09924",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2012-04-18T06:47:54Z",
    "title_canon_sha256": "f8a56ab261e2e89729ca8dcc2003f24e7c5f5472bb909a167bf631c99f2918f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.3991",
    "kind": "arxiv",
    "version": 1
  }
}