Pith Number

pith:MDUXRDI7

pith:2005:MDUXRDI7NKPIPAGWGISLIPLS7Y

not attested not anchored not stored refs pending

The Availability and Persistence of Web References in D-Lib Magazine

Frank McCown, Johan Bollen, Michael L. Nelson, Sheffan Chan

arxiv:cs/0511077 v1 · 2005-11-21 · cs.DL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MDUXRDI7NKPIPAGWGISLIPLS7Y}

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	2026-05-18T04:08:54.158577Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60e9788d1f6a9e8780d63224b43d72fe0499be1bc40110aca4f209135a3f14fb

Aliases

arxiv: cs/0511077 · arxiv_version: cs/0511077v1 · doi: 10.48550/arxiv.cs/0511077 · pith_short_12: MDUXRDI7NKPI · pith_short_16: MDUXRDI7NKPIPAGW · pith_short_8: MDUXRDI7

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/MDUXRDI7NKPIPAGWGISLIPLS7Y \
  | 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: 60e9788d1f6a9e8780d63224b43d72fe0499be1bc40110aca4f209135a3f14fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c76acebab12c311fad29a802c173e60c32499f9f3e1a6505f8c3628208bede49",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cs.DL",
    "submitted_at": "2005-11-21T15:56:17Z",
    "title_canon_sha256": "7d003d8f547dadb0670a3c4b118e513593f68773b197f61e8be3252665dd31fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0511077",
    "kind": "arxiv",
    "version": 1
  }
}