Pith Number

pith:RHY2TJRM

pith:2022:RHY2TJRMC2F6SZ4PRDOFA3SV3R

not attested not anchored not stored refs pending

Physics-embedded inverse analysis with automatic differentiation for the earth's subsurface

Daniel O'Malley, Hao Wu, Sarah Greer

arxiv:2208.04426 v1 · 2022-08-08 · physics.comp-ph · 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{RHY2TJRMC2F6SZ4PRDOFA3SV3R}

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	2026-07-05T04:46:56.544274Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

89f1a9a62c168be9678f88dc506e55dc76d0f8ceeb528d3fce7833e1bb926ad3

Aliases

arxiv: 2208.04426 · arxiv_version: 2208.04426v1 · doi: 10.48550/arxiv.2208.04426 · pith_short_12: RHY2TJRMC2F6 · pith_short_16: RHY2TJRMC2F6SZ4P · pith_short_8: RHY2TJRM

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/RHY2TJRMC2F6SZ4PRDOFA3SV3R \
  | 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: 89f1a9a62c168be9678f88dc506e55dc76d0f8ceeb528d3fce7833e1bb926ad3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5238dd141ac83bf9dd95c9c3db5d84b831a8f22d6b590bb28236cc875b3be932",
    "cross_cats_sorted": [
      "physics.geo-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2022-08-08T21:25:02Z",
    "title_canon_sha256": "ef8ab83ac802adf7fc5769d0d2eb294b33b6904016df63222da9bd7abeed6534"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2208.04426",
    "kind": "arxiv",
    "version": 1
  }
}