Pith Number

pith:BQOGP2IS

pith:2021:BQOGP2ISWZJQY6AJQKL3YX5WIE

not attested not anchored not stored refs pending

Visible Watermark Removal via Self-calibrated Localization and Background Refinement

Fengjun Guo, Jing Liang, Li Niu, Liqing Zhang, Teng Long

arxiv:2108.03581 v1 · 2021-08-08 · 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{BQOGP2ISWZJQY6AJQKL3YX5WIE}

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	2026-07-05T03:09:12.386963Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c1c67e912b6530c78098297bc5fb641397a4a51d3b30e535271daa0ae1561a9

Aliases

arxiv: 2108.03581 · arxiv_version: 2108.03581v1 · doi: 10.48550/arxiv.2108.03581 · pith_short_12: BQOGP2ISWZJQ · pith_short_16: BQOGP2ISWZJQY6AJ · pith_short_8: BQOGP2IS

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/BQOGP2ISWZJQY6AJQKL3YX5WIE \
  | 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: 0c1c67e912b6530c78098297bc5fb641397a4a51d3b30e535271daa0ae1561a9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22f21df57b36419c6e2e09bb0019ed87d2cd5e25142038e1902d858ffcc5490d",
    "cross_cats_sorted": [
      "eess.IV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-08-08T06:43:55Z",
    "title_canon_sha256": "e85b4d94470a8cabcd2ce1c61bba1c9df9e964416e6e02d4eefc2c54c66b7d8f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.03581",
    "kind": "arxiv",
    "version": 1
  }
}