Pith Number

pith:4IOCCHMK

pith:2018:4IOCCHMKNGX2OLXAS2EWADTD3Y

not attested not anchored not stored refs pending

Ambitwistor strings and amplitudes in curved backgrounds

Stefan Nekovar

arxiv:1812.09080 v1 · 2018-12-21 · 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{4IOCCHMKNGX2OLXAS2EWADTD3Y}

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	2026-05-17T23:57:45.476975Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e21c211d8a69afa72ee09689600e63de3777d834f274d491f0fa1fc99f73453e

Aliases

arxiv: 1812.09080 · arxiv_version: 1812.09080v1 · doi: 10.48550/arxiv.1812.09080 · pith_short_12: 4IOCCHMKNGX2 · pith_short_16: 4IOCCHMKNGX2OLXA · pith_short_8: 4IOCCHMK

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/4IOCCHMKNGX2OLXAS2EWADTD3Y \
  | 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: e21c211d8a69afa72ee09689600e63de3777d834f274d491f0fa1fc99f73453e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6636636ef3c2d6192374df1513bf1ff1bfebc0e2f1d16682a5809ae50b3beda4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2018-12-21T12:34:21Z",
    "title_canon_sha256": "0d319b1d690e83e817a8567b6be83ef8453d79bcbac031b8047bc6c1c2b8deaa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.09080",
    "kind": "arxiv",
    "version": 1
  }
}