Pith Number

pith:N2QU2U3C

pith:2010:N2QU2U3CXE66TRSLOAN7JWFVLK

not attested not anchored not stored refs pending

Why all these prejudices against a constant?

Carlo Rovelli, Eugenio Bianchi

arxiv:1002.3966 v3 · 2010-02-21 · astro-ph.CO · gr-qc · hep-th · 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{N2QU2U3CXE66TRSLOAN7JWFVLK}

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	2026-05-18T03:26:32.783203Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ea14d5362b93de9c64b701bf4d8b55a82da39d379479f27c5230bf76b95525b

Aliases

arxiv: 1002.3966 · arxiv_version: 1002.3966v3 · doi: 10.48550/arxiv.1002.3966 · pith_short_12: N2QU2U3CXE66 · pith_short_16: N2QU2U3CXE66TRSL · pith_short_8: N2QU2U3C

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/N2QU2U3CXE66TRSLOAN7JWFVLK \
  | 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: 6ea14d5362b93de9c64b701bf4d8b55a82da39d379479f27c5230bf76b95525b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "37b372405de454afb3fb54c3ce0c509f68a684254b2a6e7517be342a70c38c15",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th",
      "physics.hist-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-02-21T17:01:26Z",
    "title_canon_sha256": "327a2f6b1273298d46a0afa1615865586652402f75cf729da25e7b52453a6c4a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.3966",
    "kind": "arxiv",
    "version": 3
  }
}