Pith Number

pith:ZKEGBFBM

pith:2015:ZKEGBFBMEMVRSMWTA3M2QPIS7T

not attested not anchored not stored refs pending

Double-Copy Constructions and Unitarity Cuts

Josh Nohle, Scott Davies, Zvi Bern

arxiv:1510.03448 v1 · 2015-10-12 · 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{ZKEGBFBMEMVRSMWTA3M2QPIS7T}

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	2026-05-18T01:14:44.880646Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca8860942c232b1932d306d9a83d12fcda277b752dba2dd3defcc8b707231f3d

Aliases

arxiv: 1510.03448 · arxiv_version: 1510.03448v1 · doi: 10.48550/arxiv.1510.03448 · pith_short_12: ZKEGBFBMEMVR · pith_short_16: ZKEGBFBMEMVRSMWT · pith_short_8: ZKEGBFBM

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/ZKEGBFBMEMVRSMWTA3M2QPIS7T \
  | 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: ca8860942c232b1932d306d9a83d12fcda277b752dba2dd3defcc8b707231f3d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98d22fe82a779d22af2bee6e4089c83c430b5f121072d8d16dd193a0acfaebdd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2015-10-12T20:22:26Z",
    "title_canon_sha256": "8877c7bcf473e1ed63fda77cdff90d234fa867557f6e914f76e31ced595e8e29"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.03448",
    "kind": "arxiv",
    "version": 1
  }
}