Pith Number

pith:BIRLECTF

pith:2021:BIRLECTFXMSVWTBX5MXRTVOO7S

not attested not anchored not stored refs pending

The Weyl double copy from twistor space

Chris D. White, Erick Chac\'on, Silvia Nagy

arxiv:2103.16441 v1 · 2021-03-30 · hep-th · gr-qc · hep-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{BIRLECTFXMSVWTBX5MXRTVOO7S}

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.

Cited by

4 papers in Pith

Non-topological solitons in biadjoint scalar field theory

Hawking Radiation meets the Double Copy

The Penrose Transform and the Kerr-Schild double copy

Untwisting the double copy: the zeroth copy as an optical seed

Receipt and verification

First computed	2026-07-05T05:31:42.782759Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a22b20a65bb255b4c37eb2f19d5cefc88eacb673994166e489cf663a0f6c6b1

Aliases

arxiv: 2103.16441 · arxiv_version: 2103.16441v1 · doi: 10.48550/arxiv.2103.16441 · pith_short_12: BIRLECTFXMSV · pith_short_16: BIRLECTFXMSVWTBX · pith_short_8: BIRLECTF

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/BIRLECTFXMSVWTBX5MXRTVOO7S \
  | 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: 0a22b20a65bb255b4c37eb2f19d5cefc88eacb673994166e489cf663a0f6c6b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15c6e0702cdd17ceeab6532087c1bb68f765be59e7e6c9de92d7a9db48892a69",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2021-03-30T15:38:51Z",
    "title_canon_sha256": "cc11a4c5a17941c226d03454def0c54fb22a7275310827071bbd083c8ea80a43"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.16441",
    "kind": "arxiv",
    "version": 1
  }
}