Pith Number

pith:O6TYY2RY

pith:2019:O6TYY2RYOZAAVXTAWKTS5RDVN4

not attested not anchored not stored refs pending

Physically Impossible?

D. Domenici, G. Mazzitelli

arxiv:1907.03600 v1 · 2019-07-05 · physics.ed-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{O6TYY2RYOZAAVXTAWKTS5RDVN4}

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	2026-05-17T23:41:14.227192Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77a78c6a3876400ade60b2a72ec4756f1cc4fdbb3173df1840ac0dc229808a01

Aliases

arxiv: 1907.03600 · arxiv_version: 1907.03600v1 · doi: 10.48550/arxiv.1907.03600 · pith_short_12: O6TYY2RYOZAA · pith_short_16: O6TYY2RYOZAAVXTA · pith_short_8: O6TYY2RY

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/O6TYY2RYOZAAVXTAWKTS5RDVN4 \
  | 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: 77a78c6a3876400ade60b2a72ec4756f1cc4fdbb3173df1840ac0dc229808a01

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c2bd9396372d504a395dbca548c553d9d7714ce77437b02f4b897ae8932ced7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2019-07-05T08:50:37Z",
    "title_canon_sha256": "3a3d18ba4ed6499a0a28ca17f3b5f22f106df295209083b698c482c29fd87a0f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.03600",
    "kind": "arxiv",
    "version": 1
  }
}