Pith Number

pith:UR2MNJP5

pith:2015:UR2MNJP5YZQHVCFC7IPLK2AWFR

not attested not anchored not stored refs pending

Anonymous online purchases with exhaustive operational security

Johan Pouwelse, Vincent Van Mieghem

arxiv:1505.07370 v1 · 2015-05-27 · 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{UR2MNJP5YZQHVCFC7IPLK2AWFR}

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	2026-05-18T02:02:04.681674Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a474c6a5fdc6607a88a2fa1eb568162c439e798a33820eeec9eb533c596ad662

Aliases

arxiv: 1505.07370 · arxiv_version: 1505.07370v1 · doi: 10.48550/arxiv.1505.07370 · pith_short_12: UR2MNJP5YZQH · pith_short_16: UR2MNJP5YZQHVCFC · pith_short_8: UR2MNJP5

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/UR2MNJP5YZQHVCFC7IPLK2AWFR \
  | 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: a474c6a5fdc6607a88a2fa1eb568162c439e798a33820eeec9eb533c596ad662

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa0bfb26e6b38d3562b2213ec9abed0d7e0a831c3adfc8c29549d3a67c7eeb30",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2015-05-27T15:19:29Z",
    "title_canon_sha256": "0d5ebdfa39b2ab162f9d15530c4ce861797f39cdd64f777dee7b436e81c87a93"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.07370",
    "kind": "arxiv",
    "version": 1
  }
}