Pith Number

pith:2UGAEGCZ

pith:2017:2UGAEGCZDLTGSIESIKU6I4NBYI

not attested not anchored not stored refs pending

Eternal and Evanescent Black Holes: It's All Done With Mirrors

Eric V. Linder, Michael R.R. Good

arxiv:1711.09922 v1 · 2017-11-27 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2UGAEGCZDLTGSIESIKU6I4NBYI}

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	2026-05-18T00:21:09.438286Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d50c0218591ae669209242a9e471a1c22c1332125625be678435f8690bccb543

Aliases

arxiv: 1711.09922 · arxiv_version: 1711.09922v1 · doi: 10.48550/arxiv.1711.09922 · pith_short_12: 2UGAEGCZDLTG · pith_short_16: 2UGAEGCZDLTGSIES · pith_short_8: 2UGAEGCZ

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/2UGAEGCZDLTGSIESIKU6I4NBYI \
  | 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: d50c0218591ae669209242a9e471a1c22c1332125625be678435f8690bccb543

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d7937fb75cadf5a055bab54fa2c4d7e8e142e687b658daf5a1a1f026c5f6251",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2017-11-27T19:00:15Z",
    "title_canon_sha256": "201accee8b20a54ddd5be7f05d2d2f42c081417b3c27c7d06b999161f9d4f9a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.09922",
    "kind": "arxiv",
    "version": 1
  }
}