Pith Number

pith:6PYIX24O

pith:2018:6PYIX24O57YC6IZXR3WPTVBL7V

not attested not anchored not stored refs pending

Spectroscopic Binaries and Collapsed Stars: Part II

Kip S. Thorne, Virginia Trimble

arxiv:1811.04310 v1 · 2018-11-10 · astro-ph.HE · 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{6PYIX24O57YC6IZXR3WPTVBL7V}

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	2026-05-18T00:01:05.631236Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f3f08beb8eeff02f23378eecf9d42bfd4f8f41ad22c8d79a8fc8c53b18571999

Aliases

arxiv: 1811.04310 · arxiv_version: 1811.04310v1 · doi: 10.48550/arxiv.1811.04310 · pith_short_12: 6PYIX24O57YC · pith_short_16: 6PYIX24O57YC6IZX · pith_short_8: 6PYIX24O

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/6PYIX24O57YC6IZXR3WPTVBL7V \
  | 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: f3f08beb8eeff02f23378eecf9d42bfd4f8f41ad22c8d79a8fc8c53b18571999

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ae9c9afdc6bacb559b9eb39ebde2ae1ae8f00b53cea822242256114174b0523",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-11-10T20:31:32Z",
    "title_canon_sha256": "1e51d19eba9b5e89303ed6a68f5f012a556acccf2029c631792287da909c00f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.04310",
    "kind": "arxiv",
    "version": 1
  }
}