Pith Number

pith:QBWYU32Z

pith:2013:QBWYU32Z5HN7QMCVUS6ANAWTHK

not attested not anchored not stored refs pending

The mass of the black hole in GRS 1915+105: new constraints from IR spectroscopy

D. J. Hurley, M. T. Reynolds, P. Elebert, P. J. Callanan

arxiv:1301.0274 v1 · 2013-01-02 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QBWYU32Z5HN7QMCVUS6ANAWTHK}

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	2026-05-18T01:52:22.176220Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

806d8a6f59e9dbf83055a4bc0682d33aa90eb542980de11339276f4284f29f69

Aliases

arxiv: 1301.0274 · arxiv_version: 1301.0274v1 · doi: 10.48550/arxiv.1301.0274 · pith_short_12: QBWYU32Z5HN7 · pith_short_16: QBWYU32Z5HN7QMCV · pith_short_8: QBWYU32Z

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/QBWYU32Z5HN7QMCVUS6ANAWTHK \
  | 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: 806d8a6f59e9dbf83055a4bc0682d33aa90eb542980de11339276f4284f29f69

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e626e6e4f68f9a7493e509c2e8f5ab283b0e43b6b7d0aa90580246a70023744",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-01-02T17:29:00Z",
    "title_canon_sha256": "e74398bf2fb27fe4bf50fd71ad01e00bbe843f2092f7bb34f16bfcf10146e682"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.0274",
    "kind": "arxiv",
    "version": 1
  }
}