Pith Number

pith:CBR7ZM57

pith:2018:CBR7ZM57ZZIU2Z2YV5WRRXG4OY

not attested not anchored not stored refs pending

My life with GianCarlo Ghirardi, a great friend, a great teacher and a great physicist

Francesco de Stefano

arxiv:1808.01651 v1 · 2018-06-06 · 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{CBR7ZM57ZZIU2Z2YV5WRRXG4OY}

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	2026-05-18T00:08:52.283700Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1063fcb3bfce514d6758af6d18dcdc760ab13c06b7ba5d30f5afeaba3c093091

Aliases

arxiv: 1808.01651 · arxiv_version: 1808.01651v1 · doi: 10.48550/arxiv.1808.01651 · pith_short_12: CBR7ZM57ZZIU · pith_short_16: CBR7ZM57ZZIU2Z2Y · pith_short_8: CBR7ZM57

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/CBR7ZM57ZZIU2Z2YV5WRRXG4OY \
  | 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: 1063fcb3bfce514d6758af6d18dcdc760ab13c06b7ba5d30f5afeaba3c093091

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b7cf67ac6762f86b02e4af5df2cf2e31caad182e1531db03413c316eac38ba7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2018-06-06T16:56:26Z",
    "title_canon_sha256": "a512a074e9875ae6fcedc7324b9ae95f597043242755c246f663fac29ce315ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.01651",
    "kind": "arxiv",
    "version": 1
  }
}