Pith Number

pith:UVPIN7K5

pith:2007:UVPIN7K5IPDECCRLUGMYIUATCE

not attested not anchored not stored refs pending

Escalating The War On SPAM Through Practical POW Exchange

Paul Gardner-Stephen

arxiv:0710.5327 v1 · 2007-10-29 · cs.NI · 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{UVPIN7K5IPDECCRLUGMYIUATCE}

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	2026-05-18T00:58:48.814988Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a55e86fd5d43c6410a2ba199845013111aab84480d37d2a9783710dc1a0740d3

Aliases

arxiv: 0710.5327 · arxiv_version: 0710.5327v1 · doi: 10.48550/arxiv.0710.5327 · pith_short_12: UVPIN7K5IPDE · pith_short_16: UVPIN7K5IPDECCRL · pith_short_8: UVPIN7K5

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/UVPIN7K5IPDECCRLUGMYIUATCE \
  | 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: a55e86fd5d43c6410a2ba199845013111aab84480d37d2a9783710dc1a0740d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c0c769231c175d3fd3cf37177eee7fc67fcfadc7feb5bc044e150fac67f19352",
    "cross_cats_sorted": [
      "cs.CR"
    ],
    "license": "",
    "primary_cat": "cs.NI",
    "submitted_at": "2007-10-29T02:01:09Z",
    "title_canon_sha256": "ec850cc212e9c771460ccd405e0cc55acf80ccc667da1e2ce1ac484485dcba4d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0710.5327",
    "kind": "arxiv",
    "version": 1
  }
}