Pith Number

pith:E4L6EKOW

pith:2013:E4L6EKOWA7OP6UUZPMC7KH7KSW

not attested not anchored not stored refs pending

Small World Picture of Worldwide Seismic Events

Andr\'es Papa, Douglas S. R. Ferreira, Ronaldo Menezes

arxiv:1304.4979 v2 · 2013-04-17 · physics.geo-ph · physics.soc-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{E4L6EKOWA7OP6UUZPMC7KH7KSW}

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	2026-05-18T01:50:31.331613Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2717e229d607dcff52997b05f51fea959a39735e5a98c64d28ba4763fec814cc

Aliases

arxiv: 1304.4979 · arxiv_version: 1304.4979v2 · doi: 10.48550/arxiv.1304.4979 · pith_short_12: E4L6EKOWA7OP · pith_short_16: E4L6EKOWA7OP6UUZ · pith_short_8: E4L6EKOW

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/E4L6EKOWA7OP6UUZPMC7KH7KSW \
  | 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: 2717e229d607dcff52997b05f51fea959a39735e5a98c64d28ba4763fec814cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "acc9193836a48c114bbd174dde16cf153f51df9b3aff0c1903e5dc893fa01664",
    "cross_cats_sorted": [
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2013-04-17T22:01:00Z",
    "title_canon_sha256": "c18ff0c65c5ad5d0a357716cb2cebaa6c5161795ed64e3a436dc8f18d172010c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.4979",
    "kind": "arxiv",
    "version": 2
  }
}