Pith Number

pith:LTMDF4LS

pith:2019:LTMDF4LS3BR6IY2I4KYZ3QDXJX

not attested not anchored not stored refs pending

Validation of Modulation Transfer Functions and Noise Power Spectra from Natural Scenes

Edward W. S. Fry, John R. Jarvis, Ralph E. Jacobson, Robin B. Jenkin, Sophie Triantaphillidou

arxiv:1907.08924 v1 · 2019-07-21 · eess.IV · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LTMDF4LS3BR6IY2I4KYZ3QDXJX}

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	2026-05-17T23:40:02.710011Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5cd832f172d863e46348e2b19dc0774dc6a6f13d273914c9918f0aad44023bc9

Aliases

arxiv: 1907.08924 · arxiv_version: 1907.08924v1 · doi: 10.48550/arxiv.1907.08924 · pith_short_12: LTMDF4LS3BR6 · pith_short_16: LTMDF4LS3BR6IY2I · pith_short_8: LTMDF4LS

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/LTMDF4LS3BR6IY2I4KYZ3QDXJX \
  | 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: 5cd832f172d863e46348e2b19dc0774dc6a6f13d273914c9918f0aad44023bc9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9e6f32f914103a4e18b5e69e22140863f24795398965679505da6aaf0df1843",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2019-07-21T07:01:55Z",
    "title_canon_sha256": "e903f78f389ef07520c4f32a143d50d4d048372be936cecef4b7b72923569609"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.08924",
    "kind": "arxiv",
    "version": 1
  }
}