Pith Number

pith:6ZJ4DHHK

pith:2011:6ZJ4DHHKHUSPXOBJD5C2LIFHLO

not attested not anchored not stored refs pending

An early explanation of the periodic table: Lars Vegard and X-ray spectroscopy

Helge Kragh

arxiv:1112.3774 v1 · 2011-12-16 · 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{6ZJ4DHHKHUSPXOBJD5C2LIFHLO}

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	2026-05-18T04:06:08.840851Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f653c19cea3d24fbb8291f45a5a0a75b8a3b5ae5028a4d3fb3b9f8fad52b90a6

Aliases

arxiv: 1112.3774 · arxiv_version: 1112.3774v1 · doi: 10.48550/arxiv.1112.3774 · pith_short_12: 6ZJ4DHHKHUSP · pith_short_16: 6ZJ4DHHKHUSPXOBJ · pith_short_8: 6ZJ4DHHK

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/6ZJ4DHHKHUSPXOBJD5C2LIFHLO \
  | 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: f653c19cea3d24fbb8291f45a5a0a75b8a3b5ae5028a4d3fb3b9f8fad52b90a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7be3cc4c0a5610dc63599e8fb1ad54d38b7109d9ec18e23f55c0f89eefb63d29",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2011-12-16T12:16:42Z",
    "title_canon_sha256": "b9e91a8c61de4d2e6c9f274d072342b4792e058807e85d4819367f44e10d331b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.3774",
    "kind": "arxiv",
    "version": 1
  }
}