Pith Number

pith:DQ7S4ZMQ

pith:2014:DQ7S4ZMQGBWUDPCVU6LPK2JBDK

not attested not anchored not stored refs pending

Annotation as a New Paradigm in Research Archiving

Charles van den Heuvel, Dirk Roorda

arxiv:1412.6069 v1 · 2014-10-07 · cs.DL · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DQ7S4ZMQGBWUDPCVU6LPK2JBDK}

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	2026-05-18T02:30:55.535876Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c3f2e6590306d41bc55a796f569211ab744d0def8a572da039ab7c266b99d46

Aliases

arxiv: 1412.6069 · arxiv_version: 1412.6069v1 · doi: 10.48550/arxiv.1412.6069 · pith_short_12: DQ7S4ZMQGBWU · pith_short_16: DQ7S4ZMQGBWUDPCV · pith_short_8: DQ7S4ZMQ

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/DQ7S4ZMQGBWUDPCVU6LPK2JBDK \
  | 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: 1c3f2e6590306d41bc55a796f569211ab744d0def8a572da039ab7c266b99d46

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "daa6a117423f13ba2248546ab2bfd4c92a9975954f216743d7684ca8275ff1bd",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2014-10-07T08:17:03Z",
    "title_canon_sha256": "bbf12f885864fae8987a6ff428bcd1966a039108a9c60bfe90ce8076d6f362e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.6069",
    "kind": "arxiv",
    "version": 1
  }
}