Pith Number

pith:DRBTNXMP

pith:2017:DRBTNXMP35ETG6K46QB6KZDZJK

not attested not anchored not stored refs pending

The problem with the SURF scheme

Jean-Pierre Tillich, Nicolas Sendrier, Thomas Debris-Alazard

arxiv:1706.08065 v4 · 2017-06-25 · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DRBTNXMP35ETG6K46QB6KZDZJK}

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	2026-05-18T00:29:13.206771Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c4336dd8fdf4933795cf403e564794aa0dd6039617d6cefa1461b39a9b284ca

Aliases

arxiv: 1706.08065 · arxiv_version: 1706.08065v4 · doi: 10.48550/arxiv.1706.08065 · pith_short_12: DRBTNXMP35ET · pith_short_16: DRBTNXMP35ETG6K4 · pith_short_8: DRBTNXMP

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/DRBTNXMP35ETG6K46QB6KZDZJK \
  | 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: 1c4336dd8fdf4933795cf403e564794aa0dd6039617d6cefa1461b39a9b284ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3beb4e122744cbdd706fce145e405899f656b78b7af43c09a54dc8ba2f531305",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2017-06-25T09:35:43Z",
    "title_canon_sha256": "0aee490ab0708355abce1fed2fc5dc8966d2ddaa3ae54fa469a9e9d1f531489c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.08065",
    "kind": "arxiv",
    "version": 4
  }
}