Pith Number

pith:7K5UEML4

pith:2019:7K5UEML46WHA2TSARB5D7KQ7JY

not attested not anchored not stored refs pending

Seismic tomography using variational inference methods

Andrew Curtis, Xin Zhang

arxiv:1908.08356 v2 · 2019-08-22 · physics.geo-ph · physics.comp-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{7K5UEML46WHA2TSARB5D7KQ7JY}

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	2026-07-05T01:04:00.989203Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fabb42317cf58e0d4e40887a3faa1f4e3bb5afbf4f1b74f6dc7fc558876d3b28

Aliases

arxiv: 1908.08356 · arxiv_version: 1908.08356v2 · doi: 10.48550/arxiv.1908.08356 · pith_short_12: 7K5UEML46WHA · pith_short_16: 7K5UEML46WHA2TSA · pith_short_8: 7K5UEML4

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/7K5UEML46WHA2TSARB5D7KQ7JY \
  | 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: fabb42317cf58e0d4e40887a3faa1f4e3bb5afbf4f1b74f6dc7fc558876d3b28

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea80513a8b0bc2fa6f68c641ae1fab6f15cf6ebc2bbd2e71715175897d8c1e1d",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2019-08-22T13:18:51Z",
    "title_canon_sha256": "d7880e4c6688e56e7de519a342a9343ada6327b29a05181d77c5d7e1fd71f151"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.08356",
    "kind": "arxiv",
    "version": 2
  }
}