Pith Number

pith:QACQ7SPB

pith:2017:QACQ7SPBAY2CDMOQJPSQUN2KLV

not attested not anchored not stored refs pending

Natural Time Analysis of Seismicity in California: The epicenter of an impending mainshock

E.S. Skordas, N.V. Sarlis, P.A. Varotsos

arxiv:1703.07378 v2 · 2017-03-18 · physics.geo-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{QACQ7SPBAY2CDMOQJPSQUN2KLV}

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	2026-05-18T00:48:00.533742Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80050fc9e1063421b1d04be50a374a5d42181988931b38faee4054a4c81f5668

Aliases

arxiv: 1703.07378 · arxiv_version: 1703.07378v2 · doi: 10.48550/arxiv.1703.07378 · pith_short_12: QACQ7SPBAY2C · pith_short_16: QACQ7SPBAY2CDMOQ · pith_short_8: QACQ7SPB

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/QACQ7SPBAY2CDMOQJPSQUN2KLV \
  | 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: 80050fc9e1063421b1d04be50a374a5d42181988931b38faee4054a4c81f5668

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dfeb0152cdf923936c6a56a5d0498a293d75633de188d5827398b9d355134c12",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2017-03-18T09:10:43Z",
    "title_canon_sha256": "61c4f4dcf7bbb18c54bce7ad2027d0cb4aad6e5f13820964b2ad4631749eb97c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.07378",
    "kind": "arxiv",
    "version": 2
  }
}