Pith Number

pith:PGGPCKSE

pith:2021:PGGPCKSELQBU4TO3PMHT5MQQPT

not attested not anchored not stored refs pending

Towards Non-Line-of-Sight Photography

Andreas Velten, Fangzhou Mu, Jiayong Peng, Ji Hyun Nam, Siddeshwar Raghavan, Yin Li, Zhiwei Xiong

arxiv:2109.07783 v2 · 2021-09-16 · 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{PGGPCKSELQBU4TO3PMHT5MQQPT}

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	2026-07-05T04:15:10.475544Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

798cf12a445c034e4ddb7b0f3eb2107ce70ff98935e65530d53353b912d890ce

Aliases

arxiv: 2109.07783 · arxiv_version: 2109.07783v2 · doi: 10.48550/arxiv.2109.07783 · pith_short_12: PGGPCKSELQBU · pith_short_16: PGGPCKSELQBU4TO3 · pith_short_8: PGGPCKSE

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/PGGPCKSELQBU4TO3PMHT5MQQPT \
  | 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: 798cf12a445c034e4ddb7b0f3eb2107ce70ff98935e65530d53353b912d890ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "71a58f57d5400bdc1534f3c047c13b77324b624fac048af7fd5d5f88b6c72a94",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2021-09-16T08:07:13Z",
    "title_canon_sha256": "f08703b7c38d0bfbd82c01d06fec279844a1d966eef477f4770e907dca0dd496"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.07783",
    "kind": "arxiv",
    "version": 2
  }
}