Pith Number

pith:7NJXE2HJ

pith:2019:7NJXE2HJQCJN4T4M76WM5R6PPP

not attested not anchored not stored refs pending

Assessing the Sharpness of Satellite Images: Study of the PlanetScope Constellation

Carlo de Franchis, Gabriele Facciolo, J\'er\'emy Anger

arxiv:1904.09159 v1 · 2019-04-19 · 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{7NJXE2HJQCJN4T4M76WM5R6PPP}

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	2026-05-17T23:48:08.161529Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb537268e98092de4f8cffaccec7cf7bdec88e3325ba4fc342c1b59eabca6bbf

Aliases

arxiv: 1904.09159 · arxiv_version: 1904.09159v1 · doi: 10.48550/arxiv.1904.09159 · pith_short_12: 7NJXE2HJQCJN · pith_short_16: 7NJXE2HJQCJN4T4M · pith_short_8: 7NJXE2HJ

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/7NJXE2HJQCJN4T4M76WM5R6PPP \
  | 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: fb537268e98092de4f8cffaccec7cf7bdec88e3325ba4fc342c1b59eabca6bbf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "62fa0ee7edc878324caadd868409ab875b69b008d0464632cfb185aec1b039c6",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-04-19T12:01:50Z",
    "title_canon_sha256": "2d1963ee039435741b5a74ca0f8eb038a6e33a8d499e87bb0f8c2c48e412bedc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.09159",
    "kind": "arxiv",
    "version": 1
  }
}