Pith Number

pith:X22HEHBT

pith:2012:X22HEHBTPBDGJDNBTRF6RTLNFP

not attested not anchored not stored refs pending

Eight Physicists and Astronomers: Biographical Portraits

Helge Kragh

arxiv:1208.3114 v1 · 2012-08-15 · 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{X22HEHBTPBDGJDNBTRF6RTLNFP}

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	2026-05-18T03:48:45.531656Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

beb4721c337846648da19c4be8cd6d2be2698cdd8fff2834aa9509c53e274d11

Aliases

arxiv: 1208.3114 · arxiv_version: 1208.3114v1 · doi: 10.48550/arxiv.1208.3114 · pith_short_12: X22HEHBTPBDG · pith_short_16: X22HEHBTPBDGJDNB · pith_short_8: X22HEHBT

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/X22HEHBTPBDGJDNBTRF6RTLNFP \
  | 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: beb4721c337846648da19c4be8cd6d2be2698cdd8fff2834aa9509c53e274d11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "026101946fe69c41192a835c7dd5a6e04fe8ce9153c44f0ec8bbc6dc48e69b65",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2012-08-15T13:42:31Z",
    "title_canon_sha256": "2bf8cfcd68d761dac6d59e9f50c96b525821a02f954836b4fc21940e2497f98a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.3114",
    "kind": "arxiv",
    "version": 1
  }
}