Pith Number

pith:U5MXUH3T

pith:2019:U5MXUH3TTRLAS2CD6JPKFXKDWI

not attested not anchored not stored refs pending

Estimating Chlorophyll a Concentrations of Several Inland Waters with Hyperspectral Data and Machine Learning Models

Philipp M. Maier, Sina Keller

arxiv:1904.02052 v1 · 2019-04-03 · cs.CV · q-bio.QM · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U5MXUH3TTRLAS2CD6JPKFXKDWI}

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	2026-05-17T23:41:53.205913Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7597a1f739c56096843f25ea2dd43b20e969c01443ea63b0331de8311a9b2cf

Aliases

arxiv: 1904.02052 · arxiv_version: 1904.02052v1 · doi: 10.48550/arxiv.1904.02052 · pith_short_12: U5MXUH3TTRLA · pith_short_16: U5MXUH3TTRLAS2CD · pith_short_8: U5MXUH3T

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/U5MXUH3TTRLAS2CD6JPKFXKDWI \
  | 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: a7597a1f739c56096843f25ea2dd43b20e969c01443ea63b0331de8311a9b2cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4a93c294ac6b27c9c8648225f9d5f08fa266983417a0371eba03f00381c10ef5",
    "cross_cats_sorted": [
      "q-bio.QM",
      "stat.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-04-03T15:16:36Z",
    "title_canon_sha256": "017dbb8ddc21035eab103fe33e2c362571c3b2ece7e5d18608facf77c2e09495"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.02052",
    "kind": "arxiv",
    "version": 1
  }
}