Pith Number

pith:64ITS6OU

pith:2015:64ITS6OUSD3MV3F347LDAMXX7J

not attested not anchored not stored refs pending

Lessons from Einstein's 1915 discovery of general relativity

Lee Smolin

arxiv:1512.07551 v1 · 2015-12-23 · physics.hist-ph · gr-qc · hep-th

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{64ITS6OUSD3MV3F347LDAMXX7J}

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	2026-05-18T01:23:49.406109Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f7113979d490f6caecbbe7d63032f7fa77ef30114e8beb5b1f1679fa8aa12ec3

Aliases

arxiv: 1512.07551 · arxiv_version: 1512.07551v1 · doi: 10.48550/arxiv.1512.07551 · pith_short_12: 64ITS6OUSD3M · pith_short_16: 64ITS6OUSD3MV3F3 · pith_short_8: 64ITS6OU

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/64ITS6OUSD3MV3F347LDAMXX7J \
  | 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: f7113979d490f6caecbbe7d63032f7fa77ef30114e8beb5b1f1679fa8aa12ec3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d47a404f75a612830f8308778c55bbc1c561a27114e49324664a732798da205e",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2015-12-23T17:26:52Z",
    "title_canon_sha256": "f488ca103bbf04be556b6f0bd4226fd11f516fed3930fc09a33715f8292e5321"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.07551",
    "kind": "arxiv",
    "version": 1
  }
}