Pith Number

pith:3QM4O7Y5

pith:2017:3QM4O7Y5ZRDJNXLBODZCPMFV7C

not attested not anchored not stored refs pending

PROPYLA: Privacy Preserving Long-Term Secure Storage

Johannes Buchmann, Matthias Geihs, Nikolaos Karvelas, Stefan Katzenbeisser

arxiv:1711.09805 v7 · 2017-11-27 · 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{3QM4O7Y5ZRDJNXLBODZCPMFV7C}

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	2026-05-17T23:47:40.227608Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dc19c77f1dcc4696dd6170f227b0b5f8922cf9d91a17d317fdda9899f090382a

Aliases

arxiv: 1711.09805 · arxiv_version: 1711.09805v7 · doi: 10.48550/arxiv.1711.09805 · pith_short_12: 3QM4O7Y5ZRDJ · pith_short_16: 3QM4O7Y5ZRDJNXLB · pith_short_8: 3QM4O7Y5

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/3QM4O7Y5ZRDJNXLBODZCPMFV7C \
  | 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: dc19c77f1dcc4696dd6170f227b0b5f8922cf9d91a17d317fdda9899f090382a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe88c51f9f43371c336d5d04d5865ee97050fe76c5d1c7f63122821e29396330",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2017-11-27T16:24:19Z",
    "title_canon_sha256": "403ba24698cb3f02f7e8936e4017f878ed1ca8e14ae5dfba53a75621819e056b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.09805",
    "kind": "arxiv",
    "version": 7
  }
}