Pith Number

pith:J2IECNCX

pith:2012:J2IECNCXEY7CS44EI34SQC6CVB

not attested not anchored not stored refs pending

How Much of the Web Is Archived?

Ahmed AlSum, Hany SalahEldeen, Michael L. Nelson, Michele C. Weigle, Scott G. Ainsworth

arxiv:1212.6177 v2 · 2012-12-26 · cs.DL · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{J2IECNCXEY7CS44EI34SQC6CVB}

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	2026-05-18T03:37:07.667119Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4e90413457263e29738446f9280bc2a874fb8b2aaf18c91c3b584c82c71a7c51

Aliases

arxiv: 1212.6177 · arxiv_version: 1212.6177v2 · doi: 10.48550/arxiv.1212.6177 · pith_short_12: J2IECNCXEY7C · pith_short_16: J2IECNCXEY7CS44E · pith_short_8: J2IECNCX

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/J2IECNCXEY7CS44EI34SQC6CVB \
  | 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: 4e90413457263e29738446f9280bc2a874fb8b2aaf18c91c3b584c82c71a7c51

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e2819e5cf5f9d892f1fea52eef7e142f0e02ed6fddfcf52bf4b774980188232",
    "cross_cats_sorted": [
      "cs.IR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2012-12-26T13:36:55Z",
    "title_canon_sha256": "f376515e8bf643416b15275c41d1797bdbd26dae7fabd5b7444a4e4707730151"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.6177",
    "kind": "arxiv",
    "version": 2
  }
}