Pith Number

pith:R3FPRI5A

pith:2019:R3FPRI5A3UEL6U7GANYXCFGWMK

not attested not anchored not stored refs pending

Quantum surface holonomies for loop quantum gravity and their application to black hole horizons

Hanno Sahlmann, Thomas Zilker

arxiv:1909.13091 v2 · 2019-09-28 · gr-qc · hep-th · math-ph · math.MP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R3FPRI5A3UEL6U7GANYXCFGWMK}

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	2026-07-05T01:18:39.266746Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ecaf8a3a0dd08bf53e603717114d66285b9c3f713cbd01ca7b81fdc9b4eaac0

Aliases

arxiv: 1909.13091 · arxiv_version: 1909.13091v2 · doi: 10.48550/arxiv.1909.13091 · pith_short_12: R3FPRI5A3UEL · pith_short_16: R3FPRI5A3UEL6U7G · pith_short_8: R3FPRI5A

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/R3FPRI5A3UEL6U7GANYXCFGWMK \
  | 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: 8ecaf8a3a0dd08bf53e603717114d66285b9c3f713cbd01ca7b81fdc9b4eaac0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13bac1558ab459055b8576cfc41c0f27ad8afe55169566a049f800d7636f83dd",
    "cross_cats_sorted": [
      "hep-th",
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-09-28T13:16:27Z",
    "title_canon_sha256": "a15bcd26a9cd9f28f8b75233676010bd9fc9a20354a49cf6d02413799f47360b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.13091",
    "kind": "arxiv",
    "version": 2
  }
}