Pith Number

pith:VKQPJPHN

pith:2019:VKQPJPHNKH5NIMIV7SBJYL6KBP

not attested not anchored not stored refs pending

Two-loop Octagons, Algebraic Letters and $\bar{Q}$ Equations

Chi Zhang, Song He, Zhenjie Li

arxiv:1911.01290 v2 · 2019-11-04 · 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{VKQPJPHNKH5NIMIV7SBJYL6KBP}

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

1 paper in Pith

Kinematics, cluster algebras and Feynman integrals

Receipt and verification

First computed	2026-07-05T00:50:08.618925Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aaa0f4bced51fad43115fc829c2fca0bc0299e0041e4442ff10c06ae767f96c3

Aliases

arxiv: 1911.01290 · arxiv_version: 1911.01290v2 · doi: 10.48550/arxiv.1911.01290 · pith_short_12: VKQPJPHNKH5N · pith_short_16: VKQPJPHNKH5NIMIV · pith_short_8: VKQPJPHN

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/VKQPJPHNKH5NIMIV7SBJYL6KBP \
  | 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: aaa0f4bced51fad43115fc829c2fca0bc0299e0041e4442ff10c06ae767f96c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0c4f72b536ba4fa1e5bdefa29c0e40444f51c2e9fd920732d1e1d08c0e88f37",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2019-11-04T15:46:14Z",
    "title_canon_sha256": "58439cdab58efc8a05e25d191e7d77fbe84ad0757ea905e8f28123bcce6bafa7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.01290",
    "kind": "arxiv",
    "version": 2
  }
}