Pith Number

pith:FNYBJOUT

pith:2019:FNYBJOUT2L4AKBMAVLAAUVTSFM

not attested not anchored not stored refs pending

Deriving on-shell open string field amplitudes without using Feynman rules

Hiroaki Matsunaga, Toru Masuda

arxiv:1908.09784 v1 · 2019-08-26 · 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{FNYBJOUT2L4AKBMAVLAAUVTSFM}

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	2026-07-04T23:59:44.843634Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b7014ba93d2f8050580aac00a56722b1c4fb81fb280e2af8a9e71be0d17f85a

Aliases

arxiv: 1908.09784 · arxiv_version: 1908.09784v1 · doi: 10.48550/arxiv.1908.09784 · pith_short_12: FNYBJOUT2L4A · pith_short_16: FNYBJOUT2L4AKBMA · pith_short_8: FNYBJOUT

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/FNYBJOUT2L4AKBMAVLAAUVTSFM \
  | 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: 2b7014ba93d2f8050580aac00a56722b1c4fb81fb280e2af8a9e71be0d17f85a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "27d40bda260737b1a126201131a9cf79be524f629187781c5f1203cc77d245df",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2019-08-26T16:35:55Z",
    "title_canon_sha256": "cdb4a9c91289815273fa40ad380ff9a96f48684e771de337bf01da22936edee5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.09784",
    "kind": "arxiv",
    "version": 1
  }
}