Pith Number

pith:QDVUR6UM

pith:2013:QDVUR6UMR22YTMQNSWI7SBXEBW

not attested not anchored not stored refs pending

Designing the W3C Open Annotation Data Model

Herbert Van de Sompel, Paolo Ciccarese, Robert Sanderson

arxiv:1304.6709 v1 · 2013-04-24 · 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{QDVUR6UMR22YTMQNSWI7SBXEBW}

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	2026-05-18T03:27:12.302281Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80eb48fa8c8eb589b20d9591f906e40d8b3f52a89906655f8e798f190bdc8524

Aliases

arxiv: 1304.6709 · arxiv_version: 1304.6709v1 · doi: 10.48550/arxiv.1304.6709 · pith_short_12: QDVUR6UMR22Y · pith_short_16: QDVUR6UMR22YTMQN · pith_short_8: QDVUR6UM

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/QDVUR6UMR22YTMQNSWI7SBXEBW \
  | 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: 80eb48fa8c8eb589b20d9591f906e40d8b3f52a89906655f8e798f190bdc8524

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec1944a374c4e1d9fea9922cce3f17407328439bd7f69ae8bf99823efad31e53",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2013-04-24T19:49:57Z",
    "title_canon_sha256": "663af231f248fb9285f00fd76c739af72897dc6f6722b97349491e57b07a8946"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.6709",
    "kind": "arxiv",
    "version": 1
  }
}