Pith Number

pith:QUI2DSYQ

pith:2019:QUI2DSYQTDDVPTUEV6JA7BMO3W

not attested not anchored not stored refs pending

Learn to Scale: Generating Multipolar Normalized Density Maps for Crowd Counting

Chenfeng Xu, Jianlong Fu, Kai Qiu, Song Bai, Xiang Bai, Yongchao Xu

arxiv:1907.12428 v2 · 2019-07-29 · 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{QUI2DSYQTDDVPTUEV6JA7BMO3W}

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	2026-07-04T23:52:22.290886Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8511a1cb1098c757ce84af920f858eddb177683a649e42a4d75443afd1165026

Aliases

arxiv: 1907.12428 · arxiv_version: 1907.12428v2 · doi: 10.48550/arxiv.1907.12428 · pith_short_12: QUI2DSYQTDDV · pith_short_16: QUI2DSYQTDDVPTUE · pith_short_8: QUI2DSYQ

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/QUI2DSYQTDDVPTUEV6JA7BMO3W \
  | 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: 8511a1cb1098c757ce84af920f858eddb177683a649e42a4d75443afd1165026

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ede48e6ab8a41057b2972e278561b772b7982aed49debad851c6fe6dc05f507",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-07-29T13:48:07Z",
    "title_canon_sha256": "c3d8bb565c9748bf7ba64a5ff0d725cae420b16198c9506d558507cdc4573bb8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.12428",
    "kind": "arxiv",
    "version": 2
  }
}