Pith Number

pith:U5SDRVQV

pith:2017:U5SDRVQVGTTALLIII545VBZJUT

not attested not anchored not stored refs pending

What are we missing in our search for quantum gravity?

Lee Smolin

arxiv:1705.09208 v1 · 2017-05-25 · 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{U5SDRVQVGTTALLIII545VBZJUT}

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	2026-05-18T00:43:40.162834Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a76438d61534e605ad084779da8729a4df97cbe9287ffe4b355ee5f1a84c4f59

Aliases

arxiv: 1705.09208 · arxiv_version: 1705.09208v1 · doi: 10.48550/arxiv.1705.09208 · pith_short_12: U5SDRVQVGTTA · pith_short_16: U5SDRVQVGTTALLII · pith_short_8: U5SDRVQV

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/U5SDRVQVGTTALLIII545VBZJUT \
  | 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: a76438d61534e605ad084779da8729a4df97cbe9287ffe4b355ee5f1a84c4f59

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f4485e98b91bf55af597d2456fb41e1edc50ae287fb7c8d5f97cb42c680366c0",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2017-05-25T14:56:50Z",
    "title_canon_sha256": "07d1b9e3e3bc15f50cd46f1c57badcf720cc52d169618154fda6f330c3ee2768"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.09208",
    "kind": "arxiv",
    "version": 1
  }
}