Pith Number

pith:TRSRV7H5

pith:2008:TRSRV7H5P72W4UNYDSVUZ76KC7

not attested not anchored not stored refs pending

Dynamical Mass of the Substellar Benchmark Binary HD 130948BC

Michael C. Liu (IfA/Hawaii), Michael J. Ireland (Sydney), Trent J. Dupuy

arxiv:0807.2450 v2 · 2008-07-16 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TRSRV7H5P72W4UNYDSVUZ76KC7}

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	2026-05-18T04:29:33.229244Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9c651afcfd7ff56e51b81cab4cffca17e85a73d4b86d4dfc995f3ac0f424227c

Aliases

arxiv: 0807.2450 · arxiv_version: 0807.2450v2 · doi: 10.48550/arxiv.0807.2450 · pith_short_12: TRSRV7H5P72W · pith_short_16: TRSRV7H5P72W4UNY · pith_short_8: TRSRV7H5

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/TRSRV7H5P72W4UNYDSVUZ76KC7 \
  | 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: 9c651afcfd7ff56e51b81cab4cffca17e85a73d4b86d4dfc995f3ac0f424227c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1808677a60020e4db458957b6d0e783c75cbc306fb197e144060987739ff0488",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-07-16T02:57:50Z",
    "title_canon_sha256": "8f3563e028aa92750fc2754c36e2ac83469c13f82f6799cfee52b250959d0a4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0807.2450",
    "kind": "arxiv",
    "version": 2
  }
}