Pith Number

pith:7SK2HTTS

pith:2017:7SK2HTTSQDYOHID77QB657745H

not attested not anchored not stored refs pending

Twistor theory at fifty: from contour integrals to twistor strings

Lionel Mason, Maciej Dunajski, Michael Atiyah

arxiv:1704.07464 v2 · 2017-04-24 · hep-th · gr-qc · math.DG · nlin.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7SK2HTTSQDYOHID77QB657745H}

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	2026-05-18T00:31:41.248158Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc95a3ce7280f0e3a07ffc03eefffce9cea842d60667efca225e1a786a5b9a69

Aliases

arxiv: 1704.07464 · arxiv_version: 1704.07464v2 · doi: 10.48550/arxiv.1704.07464 · pith_short_12: 7SK2HTTSQDYO · pith_short_16: 7SK2HTTSQDYOHID7 · pith_short_8: 7SK2HTTS

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/7SK2HTTSQDYOHID77QB657745H \
  | 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: fc95a3ce7280f0e3a07ffc03eefffce9cea842d60667efca225e1a786a5b9a69

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b6515df20acf43ad3405d15027f576d0357d44b67107743559231e440c20c9b",
    "cross_cats_sorted": [
      "gr-qc",
      "math.DG",
      "nlin.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2017-04-24T20:59:58Z",
    "title_canon_sha256": "515a413fe46970952fdb898d0a5c1b8c2e9064f0d95878dfee333514ce2ddb62"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.07464",
    "kind": "arxiv",
    "version": 2
  }
}