Pith Number

pith:4TF2ALHE

pith:2018:4TF2ALHECMOQWIRDUZ43EBCMRE

not attested not anchored not stored refs pending

P-wave arrival picking and first-motion polarity determination with deep learning

Egill Hauksson, Men-Andrin Meier, Zachary E. Ross

arxiv:1804.08804 v1 · 2018-04-24 · 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{4TF2ALHECMOQWIRDUZ43EBCMRE}

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	2026-05-18T00:08:07.433485Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4cba02ce4131d0b2223a679b2044c891feae457f9c230a8ab158ba8495371db

Aliases

arxiv: 1804.08804 · arxiv_version: 1804.08804v1 · doi: 10.48550/arxiv.1804.08804 · pith_short_12: 4TF2ALHECMOQ · pith_short_16: 4TF2ALHECMOQWIRD · pith_short_8: 4TF2ALHE

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/4TF2ALHECMOQWIRDUZ43EBCMRE \
  | 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: e4cba02ce4131d0b2223a679b2044c891feae457f9c230a8ab158ba8495371db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6df8923a7708802736bba01461e1b1e67726d79c63e156503bf23d2910425d80",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2018-04-24T01:45:03Z",
    "title_canon_sha256": "b95670d258bc79b53f941e620b35ac9c68d883d6e255112aee96a210ef918b3e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.08804",
    "kind": "arxiv",
    "version": 1
  }
}