Pith Number

pith:UCC2DIAW

pith:2020:UCC2DIAWPX2UGHERHJIRM7XZLQ

not attested not anchored not stored refs pending

Observables in quantum field theory on a collapsing black hole background

Micheal S. Berger, Zhi Liu

arxiv:2004.13276 v2 · 2020-04-28 · gr-qc · 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{UCC2DIAWPX2UGHERHJIRM7XZLQ}

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	2026-07-05T01:51:07.071099Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a085a1a0167df5431c913a51167ef95c2dc7b425995365ef01a134f242f68610

Aliases

arxiv: 2004.13276 · arxiv_version: 2004.13276v2 · doi: 10.48550/arxiv.2004.13276 · pith_short_12: UCC2DIAWPX2U · pith_short_16: UCC2DIAWPX2UGHER · pith_short_8: UCC2DIAW

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/UCC2DIAWPX2UGHERHJIRM7XZLQ \
  | 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: a085a1a0167df5431c913a51167ef95c2dc7b425995365ef01a134f242f68610

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "202048054ae8d40d9f9a1b58f60ad360e1435db8ef4493d21989f05bc2851b44",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2020-04-28T04:05:03Z",
    "title_canon_sha256": "f804d2e5682238df301e482afe5e45d44721b0074e4ac538b6bcf1cb5692a45b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.13276",
    "kind": "arxiv",
    "version": 2
  }
}