Pith Number

pith:TNXBDLK3

pith:2016:TNXBDLK36VKDBWMHYESZ7HVGUP

not attested not anchored not stored refs pending

Pre-seismic ionospheric anomalies detected before the 2016 Kumamoto earthquake

Ken Umeno, Takuya Iwata

arxiv:1612.05667 v2 · 2016-12-14 · 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{TNXBDLK36VKDBWMHYESZ7HVGUP}

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	2026-05-18T00:45:14.651194Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9b6e11ad5bf55430d987c1259f9ea6a3ea1adf018d089cf34b515c1ae22d6d15

Aliases

arxiv: 1612.05667 · arxiv_version: 1612.05667v2 · doi: 10.48550/arxiv.1612.05667 · pith_short_12: TNXBDLK36VKD · pith_short_16: TNXBDLK36VKDBWMH · pith_short_8: TNXBDLK3

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/TNXBDLK36VKDBWMHYESZ7HVGUP \
  | 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: 9b6e11ad5bf55430d987c1259f9ea6a3ea1adf018d089cf34b515c1ae22d6d15

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee6358401f3837891efc6d72867739d1ed40a939ccdf2e43d2546591484db539",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2016-12-14T06:02:27Z",
    "title_canon_sha256": "7b76b54d19aac083612b5337b9cad74740ac9b57e02395782cd8477c176a7120"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.05667",
    "kind": "arxiv",
    "version": 2
  }
}