Pith Number

pith:FBJJ32MU

pith:2026:FBJJ32MUV2BATIY6YCQ4PIGRTE

not attested not anchored not stored refs pending

HaloMark: A Spectral Threshold for Embedding-Vector Watermarking under C2PA

Tarun Sharma

arxiv:2608.08645 v1 · 2026-08-09 · cs.CR · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FBJJ32MUV2BATIY6YCQ4PIGRTE}

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	2026-08-11T01:23:15.799348Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28529de994ae8209a31ec0a1c7a0d199299ac8b7f8740e40f80c034b2673477d

Aliases

arxiv: 2608.08645 · arxiv_version: 2608.08645v1 · doi: 10.48550/arxiv.2608.08645 · pith_short_12: FBJJ32MUV2BA · pith_short_16: FBJJ32MUV2BATIY6 · pith_short_8: FBJJ32MU

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/FBJJ32MUV2BATIY6YCQ4PIGRTE \
  | 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: 28529de994ae8209a31ec0a1c7a0d199299ac8b7f8740e40f80c034b2673477d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "958e577c63fcd596481f0d30d96a7f29aff758047e9a1be433f24a1c4b121e98",
    "cross_cats_sorted": [
      "cs.IR"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2026-08-09T11:36:59Z",
    "title_canon_sha256": "a6a175669af2d0887f554989243a53eae1b9141f4f505514bd91b7315aaebfda"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.08645",
    "kind": "arxiv",
    "version": 1
  }
}