Pith Number

pith:WVK7VVOU

pith:2017:WVK7VVOUKZAEKR636XUPOXRBO4

not attested not anchored not stored refs pending

Objective Image Quality Assessment for High Resolution Photospheric Images by Median Filter Gradient Similarity

Dandan Zhang, Feng Wang, Hui Deng, Kaifan Ji, Tianyu Wang, Wenda Cao, Yongyuan Xiang, Zhenyu Jin, Zhong Liu

arxiv:1701.05300 v1 · 2017-01-19 · astro-ph.IM · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WVK7VVOUKZAEKR636XUPOXRBO4}

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	2026-05-18T00:52:22.098714Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b555fad5d456404547dbf5e8f75e21772c10d3c4a276511b03fe969e51a1b6cc

Aliases

arxiv: 1701.05300 · arxiv_version: 1701.05300v1 · doi: 10.48550/arxiv.1701.05300 · pith_short_12: WVK7VVOUKZAE · pith_short_16: WVK7VVOUKZAEKR63 · pith_short_8: WVK7VVOU

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/WVK7VVOUKZAEKR636XUPOXRBO4 \
  | 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: b555fad5d456404547dbf5e8f75e21772c10d3c4a276511b03fe969e51a1b6cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "620c16ed069cda3bbe2934863cee3230a0c09673b9c62cb77c4805e7a57377f0",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2017-01-19T04:54:42Z",
    "title_canon_sha256": "3fb7457b7bc38bfe795ef36340ca4946d0b47c3dfd301b343ea4279c23eaaceb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.05300",
    "kind": "arxiv",
    "version": 1
  }
}