Pith Number

pith:V7OQEXHS

pith:2026:V7OQEXHSEAZ6R3EWNZQ652KAWT

not attested not anchored not stored refs pending

Ink Detection from Surface Topography of the Herculaneum Papyri

Federica Nicolardi, Giorgio Angelotti, Paul Henderson, W. Brent Seales

arxiv:2603.27698 v1 · 2026-03-29 · cs.CV · cs.DL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{V7OQEXHSEAZ6R3EWNZQ652KAWT}

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	2026-06-19T16:12:53.594238Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

afdd025cf22033e8ec966e61eee940b4fac773fe0b190f203e36cd252e4ff8cd

Aliases

arxiv: 2603.27698 · arxiv_version: 2603.27698v1 · doi: 10.48550/arxiv.2603.27698 · pith_short_12: V7OQEXHSEAZ6 · pith_short_16: V7OQEXHSEAZ6R3EW · pith_short_8: V7OQEXHS

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/V7OQEXHSEAZ6R3EWNZQ652KAWT \
  | 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: afdd025cf22033e8ec966e61eee940b4fac773fe0b190f203e36cd252e4ff8cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9be5165345a13519835b4620c2ac9e8010b26e7947b1ca6f8b7edd60303b40a",
    "cross_cats_sorted": [
      "cs.DL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-03-29T13:55:24Z",
    "title_canon_sha256": "6ab0ee4539e0d66691a8bd71d6cbd4490c3fc048ddcbca6c72cf580a0ec8ffc8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.27698",
    "kind": "arxiv",
    "version": 1
  }
}