Pith Number

pith:R6WDUQSD

pith:2025:R6WDUQSDOJZKCH3WGCROG6LXVL

not attested not anchored not stored refs pending

Gravitational Instantons, old and new

Maciej Dunajski

arxiv:2501.00688 v1 · 2025-01-01 · hep-th · gr-qc · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R6WDUQSDOJZKCH3WGCROG6LXVL}

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	2026-07-05T09:56:38.849964Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fac3a42437272a11f7630a2e37977aac1e1b93e99c8c56f4f5820dc6c6562da

Aliases

arxiv: 2501.00688 · arxiv_version: 2501.00688v1 · doi: 10.48550/arxiv.2501.00688 · pith_short_12: R6WDUQSDOJZK · pith_short_16: R6WDUQSDOJZKCH3W · pith_short_8: R6WDUQSD

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/R6WDUQSDOJZKCH3WGCROG6LXVL \
  | 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: 8fac3a42437272a11f7630a2e37977aac1e1b93e99c8c56f4f5820dc6c6562da

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b1abe8414284f9574ccdc041d4c7b7355fbbb0425dc83772b26965d4350b1d8",
    "cross_cats_sorted": [
      "gr-qc",
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2025-01-01T00:38:55Z",
    "title_canon_sha256": "913a095c9bf3e90f09b11888a0f0a86c88f949a241a08d95a172d8c16429e8db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.00688",
    "kind": "arxiv",
    "version": 1
  }
}