Pith Number

pith:42TVI2KW

pith:2025:42TVI2KW3WMFTVP2KBTBYWUABD

not attested not anchored not stored refs pending

FOCUS on Contamination: Hydrology-Informed Noise-Aware Learning for Geospatial PFAS Mapping

Alexa Friedman, David Q. Andrews, Elizabeth Bondi-Kelly, Jowaria Khan, Kaley Beins, Katherine E. Manz, Rachel Klein, Runzi Wang, Sydney Evans

arxiv:2502.14894 v5 · 2025-02-17 · cs.CV · cs.AI · cs.CY · cs.LG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{42TVI2KW3WMFTVP2KBTBYWUABD}

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	2026-06-11T01:10:25.544974Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e6a7546956dd9859d5fa50661c5a8008de5c2371ed9ea38c983fcac51c98a3e2

Aliases

arxiv: 2502.14894 · arxiv_version: 2502.14894v5 · doi: 10.48550/arxiv.2502.14894 · pith_short_12: 42TVI2KW3WMF · pith_short_16: 42TVI2KW3WMFTVP2 · pith_short_8: 42TVI2KW

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/42TVI2KW3WMFTVP2KBTBYWUABD \
  | 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: e6a7546956dd9859d5fa50661c5a8008de5c2371ed9ea38c983fcac51c98a3e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "60abeb47d0374cebb571d6793fb2268e7463d04d84aa62d18238db0159afbc8a",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CY",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2025-02-17T16:57:10Z",
    "title_canon_sha256": "6077485e0ed4751df80d0f5ac48bc9b313e286545641dce96536793ba2d5e75f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.14894",
    "kind": "arxiv",
    "version": 5
  }
}