Pith Number

pith:V22YRDXJ

pith:2012:V22YRDXJGXDILFDEJV5SWRDKP7

not attested not anchored not stored refs pending

Annotations, Collaborative Tagging, and Searching Mathematics in E-Learning

Eslam Al Maghayreh, Faisal Alkhateeb, Iyad Abu Doush, Izzat Alsmadi, Samer Samarah

arxiv:1211.1780 v1 · 2012-11-08 · cs.IR · 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{V22YRDXJGXDILFDEJV5SWRDKP7}

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	2026-05-18T03:41:13.531381Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aeb5888ee935c68594644d7b2b446a7fcf0a68e99234beab9cf1906e8d4b32ee

Aliases

arxiv: 1211.1780 · arxiv_version: 1211.1780v1 · doi: 10.48550/arxiv.1211.1780 · pith_short_12: V22YRDXJGXDI · pith_short_16: V22YRDXJGXDILFDE · pith_short_8: V22YRDXJ

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/V22YRDXJGXDILFDEJV5SWRDKP7 \
  | 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: aeb5888ee935c68594644d7b2b446a7fcf0a68e99234beab9cf1906e8d4b32ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "262a7d54fb9ac202fdfa46e67356370fbe099d3d3a1e3ea177fcb16385711155",
    "cross_cats_sorted": [
      "cs.DL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2012-11-08T07:53:43Z",
    "title_canon_sha256": "d02d06ff4eaf2516aaf3b9d5c79db1533655c3b3b17761539f9a3dc2e79f4e90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.1780",
    "kind": "arxiv",
    "version": 1
  }
}