Pith Number

pith:3W37OUBY

pith:2015:3W37OUBYU7TWRFITQV4I4QFL3J

not attested not anchored not stored refs pending

XMM-Newton and Chandra observations of the M31 globular cluster black hole candidate XB135: a heavyweight contender cut down to size

F. Primini, M. R. Garcia, R. Barnard, S. S. Murray, U. C. Kolb

arxiv:1501.06559 v1 · 2015-01-26 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3W37OUBYU7TWRFITQV4I4QFL3J}

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	2026-05-18T01:41:08.526420Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ddb7f75038a7e768951385788e40abda4261c93ae18ee0c45adafdcbfada27f3

Aliases

arxiv: 1501.06559 · arxiv_version: 1501.06559v1 · doi: 10.48550/arxiv.1501.06559 · pith_short_12: 3W37OUBYU7TW · pith_short_16: 3W37OUBYU7TWRFIT · pith_short_8: 3W37OUBY

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/3W37OUBYU7TWRFITQV4I4QFL3J \
  | 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: ddb7f75038a7e768951385788e40abda4261c93ae18ee0c45adafdcbfada27f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d9287dbc54317ded5c38a124f33b4bcec3bf474db454cbcf317c96cb38e80be",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-01-26T20:43:15Z",
    "title_canon_sha256": "788af8f94326e6ff5f375e7c3df7a8545c03c82b92af13074cfa467c154fca4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.06559",
    "kind": "arxiv",
    "version": 1
  }
}