Pith Number

pith:BLUPBQT2

pith:2014:BLUPBQT243SJMKE7P2LBUO5FN3

not attested not anchored not stored refs pending

Obituary: Dr Dianne Johnson (1947-2012)

Duane W. Hamacher

arxiv:1405.2905 v1 · 2014-05-12 · physics.hist-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BLUPBQT243SJMKE7P2LBUO5FN3}

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	2026-05-18T02:51:58.238541Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ae8f0c27ae6e496289f7e961a3ba56eeb30bcb1e93d4fd8b81d5175804d88d4

Aliases

arxiv: 1405.2905 · arxiv_version: 1405.2905v1 · doi: 10.48550/arxiv.1405.2905 · pith_short_12: BLUPBQT243SJ · pith_short_16: BLUPBQT243SJMKE7 · pith_short_8: BLUPBQT2

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/BLUPBQT243SJMKE7P2LBUO5FN3 \
  | 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: 0ae8f0c27ae6e496289f7e961a3ba56eeb30bcb1e93d4fd8b81d5175804d88d4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90a36342e573cc5e036c57b9a43471b323ea232a08d93b32a695908d5c9d11a6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2014-05-12T04:44:51Z",
    "title_canon_sha256": "e35c52fc261ca9cac7bd32fb873b63694577849e03ea4ed9b796bae7b2fdfcd9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.2905",
    "kind": "arxiv",
    "version": 1
  }
}