Pith Number

pith:QTZ4EKZG

pith:2017:QTZ4EKZGYB4Q6DFIRWRVFOFMDK

not attested not anchored not stored refs pending

Black holes as echoes of previous cosmic cycles

Alan Coley, Bernard Carr, Timothy Clifton

arxiv:1704.02919 v1 · 2017-04-10 · 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{QTZ4EKZGYB4Q6DFIRWRVFOFMDK}

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	2026-05-18T00:46:43.645642Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84f3c22b26c0790f0ca88da352b8ac1aab7302284eff678d4c927654226524f7

Aliases

arxiv: 1704.02919 · arxiv_version: 1704.02919v1 · doi: 10.48550/arxiv.1704.02919 · pith_short_12: QTZ4EKZGYB4Q · pith_short_16: QTZ4EKZGYB4Q6DFI · pith_short_8: QTZ4EKZG

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/QTZ4EKZGYB4Q6DFIRWRVFOFMDK \
  | 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: 84f3c22b26c0790f0ca88da352b8ac1aab7302284eff678d4c927654226524f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98c089f755f5f9092638f58af4d0989be4ce766c071cc9c177beaea892becf2b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2017-04-10T15:52:35Z",
    "title_canon_sha256": "3c9b43bbc758744d9e5e2b722d6aa2b3efc1bbefcbb18cb01b5d2fdfbd87dff8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.02919",
    "kind": "arxiv",
    "version": 1
  }
}