Pith Number

pith:BTCZLLAG

pith:2021:BTCZLLAGOKU6ALDKS23SQMPRUU

not attested not anchored not stored refs pending

Measuring binary black hole orbital-plane spin orientations

Maximiliano Isi, Salvatore Vitale, Sylvia Biscoveanu, Vijay Varma, Will M. Farr

arxiv:2107.09692 v4 · 2021-07-20 · 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{BTCZLLAGOKU6ALDKS23SQMPRUU}

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	2026-07-05T03:49:40.402133Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0cc595ac0672a9e02c6a96b72831f1a51a80a537288828f9ec597574ee6093ae

Aliases

arxiv: 2107.09692 · arxiv_version: 2107.09692v4 · doi: 10.48550/arxiv.2107.09692 · pith_short_12: BTCZLLAGOKU6 · pith_short_16: BTCZLLAGOKU6ALDK · pith_short_8: BTCZLLAG

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/BTCZLLAGOKU6ALDKS23SQMPRUU \
  | 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: 0cc595ac0672a9e02c6a96b72831f1a51a80a537288828f9ec597574ee6093ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f2aee1a33b483d10f52d57b7bc7be361c367927f77d6f22b3e149b2be48a22b",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-07-20T18:01:48Z",
    "title_canon_sha256": "098d1134184577e0e9f880b234143ad3c94178df80bf0f8946dddedb7a9a7108"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.09692",
    "kind": "arxiv",
    "version": 4
  }
}