Pith Number

pith:V5QFEIXH

pith:2021:V5QFEIXHQGVWBLXUXRDPAGJ4EK

not attested not anchored not stored refs pending

Deep Camera Obscura: An Image Restoration Pipeline for Lensless Pinhole Photography

Huaijin Chen, Jinwei Gu, Joshua D. Rego, Shuai Li, Suren Jayasuriya

arxiv:2108.05563 v1 · 2021-08-12 · cs.CV · 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{V5QFEIXHQGVWBLXUXRDPAGJ4EK}

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	2026-07-05T04:43:33.947342Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af605222e781ab60aef4bc46f0193c22b6f9903137e2bc69604932fc92625234

Aliases

arxiv: 2108.05563 · arxiv_version: 2108.05563v1 · doi: 10.48550/arxiv.2108.05563 · pith_short_12: V5QFEIXHQGVW · pith_short_16: V5QFEIXHQGVWBLXU · pith_short_8: V5QFEIXH

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/V5QFEIXHQGVWBLXUXRDPAGJ4EK \
  | 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: af605222e781ab60aef4bc46f0193c22b6f9903137e2bc69604932fc92625234

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4adfbd4e3e4ba54ba5a92db3d3ffce502fb87507a0b6bd6d06ca274d4f52efe",
    "cross_cats_sorted": [
      "eess.IV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-08-12T07:03:00Z",
    "title_canon_sha256": "2aa80e5ed6b3fee093e9e311daeb17a7d1e3c26dd358c6be1bd3e3817d0ee710"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.05563",
    "kind": "arxiv",
    "version": 1
  }
}