Pith Number

pith:OTC6IRT3

pith:2007:OTC6IRT357BS2BID3OXIRBZNGP

not attested not anchored not stored refs pending

Big-Rip, Sudden Future, and other exotic singularities in the universe

Adam Balcerzak, Mariusz P. Dabrowski

arxiv:gr-qc/0701056 v1 · 2007-01-10 · gr-qc · astro-ph · 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{OTC6IRT357BS2BID3OXIRBZNGP}

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	2026-05-18T00:59:12.527839Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74c5e4467befc32d0503dbae88872d33c114bb7e7205fb5e42bd4edd930cd95d

Aliases

arxiv: gr-qc/0701056 · arxiv_version: gr-qc/0701056v1 · doi: 10.48550/arxiv.gr-qc/0701056 · pith_short_12: OTC6IRT357BS · pith_short_16: OTC6IRT357BS2BID · pith_short_8: OTC6IRT3

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/OTC6IRT357BS2BID3OXIRBZNGP \
  | 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: 74c5e4467befc32d0503dbae88872d33c114bb7e7205fb5e42bd4edd930cd95d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40a62c1b207d761b9b8703d15947699ea522e73f579658f82413196353695ea2",
    "cross_cats_sorted": [
      "astro-ph",
      "hep-th"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2007-01-10T09:54:44Z",
    "title_canon_sha256": "4aaf139c6f566823a3392ada6442985c8830dcdaf928dac9e6e3973b49c48d05"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0701056",
    "kind": "arxiv",
    "version": 1
  }
}