Pith Number

pith:KL65GHMZ

pith:2026:KL65GHMZBPGURNM3YCEPXLZ76Y

not attested not anchored not stored refs pending

Incremental Fingerprinting in an Open World

Andrea Pferscher, Einar Broch Johnsen, Jurriaan Rot, Loes Kruger, Paul Kobialka, Sebastian Junges

arxiv:2601.21680 v2 · 2026-01-29 · cs.CR · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KL65GHMZBPGURNM3YCEPXLZ76Y}

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	2026-06-23T03:13:53.604111Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

52fdd31d990bcd48b59bc088fbaf3ff61d2d5ec9d64d608e1eadfdbf65755f3b

Aliases

arxiv: 2601.21680 · arxiv_version: 2601.21680v2 · doi: 10.48550/arxiv.2601.21680 · pith_short_12: KL65GHMZBPGU · pith_short_16: KL65GHMZBPGURNM3 · pith_short_8: KL65GHMZ

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/KL65GHMZBPGURNM3YCEPXLZ76Y \
  | 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: 52fdd31d990bcd48b59bc088fbaf3ff61d2d5ec9d64d608e1eadfdbf65755f3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c2363ebaee9e9a6b6a0c0d28c0cb359df70720adc15caee9047ae567f3c2450",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2026-01-29T13:14:15Z",
    "title_canon_sha256": "b6c4e2de11d32972af699e1c804fdf63439de5654f9bb106ec03951d98cb54be"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2601.21680",
    "kind": "arxiv",
    "version": 2
  }
}