Pith Number

pith:U3OX5XC5

pith:2019:U3OX5XC5YGOMCALIMNQI4QFBBD

not attested not anchored not stored refs pending

Scene-and-Process-Dependent Spatial Image Quality Metrics

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

arxiv:1907.08926 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{U3OX5XC5YGOMCALIMNQI4QFBBD}

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	2026-05-17T23:40:02.703491Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6dd7edc5dc19cc1016863608e40a108db24dcc823696d911803aeb4a59e627c

Aliases

arxiv: 1907.08926 · arxiv_version: 1907.08926v1 · doi: 10.48550/arxiv.1907.08926 · pith_short_12: U3OX5XC5YGOM · pith_short_16: U3OX5XC5YGOMCALI · pith_short_8: U3OX5XC5

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/U3OX5XC5YGOMCALIMNQI4QFBBD \
  | 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: a6dd7edc5dc19cc1016863608e40a108db24dcc823696d911803aeb4a59e627c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "514b636e8d91d67ce262e26b790bad36087a5f5df6767ce3f6dee5bc34080295",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2019-07-21T07:13:43Z",
    "title_canon_sha256": "ae496234295276cfa4c67bcb5e157ebe7498e9d525a19002353a65fe12181200"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.08926",
    "kind": "arxiv",
    "version": 1
  }
}