Pith Number

pith:ZTBRQIV4

pith:2009:ZTBRQIV4VFGKMPB4HESOHUCIRP

not attested not anchored not stored refs pending

Can stellar mass black holes be quark stars?

K. S. Cheng, T. Harko, Z. Kovacs

arxiv:0908.2672 v1 · 2009-08-19 · astro-ph.HE · 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{ZTBRQIV4VFGKMPB4HESOHUCIRP}

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	2026-05-18T02:12:25.357696Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ccc31822bca94ca63c3c3924e3d0488bc82cbf7bf8d0b7e055544b74a66591bd

Aliases

arxiv: 0908.2672 · arxiv_version: 0908.2672v1 · doi: 10.48550/arxiv.0908.2672 · pith_short_12: ZTBRQIV4VFGK · pith_short_16: ZTBRQIV4VFGKMPB4 · pith_short_8: ZTBRQIV4

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/ZTBRQIV4VFGKMPB4HESOHUCIRP \
  | 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: ccc31822bca94ca63c3c3924e3d0488bc82cbf7bf8d0b7e055544b74a66591bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33d317231c2bbfb4c72b6f531edd4706fcbf0f081a5e03d37e92b76a9546b461",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-08-19T03:26:00Z",
    "title_canon_sha256": "14df7c5306fab4983f25255621ed4d63913cf23f0b1a1a62b56785466fb699f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.2672",
    "kind": "arxiv",
    "version": 1
  }
}