Pith Number

pith:HPE7WSHV

pith:2021:HPE7WSHVDX5D7ZUJGMSM4WO7OT

not attested not anchored not stored refs pending

Sensing population distribution from satellite imagery via deep learning: model selection, neighboring effect, and systematic biases

Di Zhu, Fan Zhang, Lei Zou, Tao Liu, Xiao Huang, Xiao Li

arxiv:2103.02155 v1 · 2021-03-03 · cs.CV · cs.LG · eess.IV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HPE7WSHVDX5D7ZUJGMSM4WO7OT}

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	2026-07-05T02:20:01.146837Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3bc9fb48f51dfa3fe6893324ce59df74cd84ccbc15445150da14c975694b1a9c

Aliases

arxiv: 2103.02155 · arxiv_version: 2103.02155v1 · doi: 10.48550/arxiv.2103.02155 · pith_short_12: HPE7WSHVDX5D · pith_short_16: HPE7WSHVDX5D7ZUJ · pith_short_8: HPE7WSHV

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/HPE7WSHVDX5D7ZUJGMSM4WO7OT \
  | 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: 3bc9fb48f51dfa3fe6893324ce59df74cd84ccbc15445150da14c975694b1a9c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "23a089a997797e27fe915cecf9631820b1b7bdd0b26fdc7240fcade191ea022b",
    "cross_cats_sorted": [
      "cs.LG",
      "eess.IV"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-03-03T03:40:24Z",
    "title_canon_sha256": "96f49d8f9688636a4ec39d9442db5c9e63acb4b25255a70cf4e753aeb5bbf913"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.02155",
    "kind": "arxiv",
    "version": 1
  }
}