Pith Number

pith:VD5FKPVW

pith:2013:VD5FKPVWFDJHRYWQOKA25OOFFW

not attested not anchored not stored refs pending

Chandra identification of 26 new black hole candidates in the central region of M31

M. R. Garcia, R. Barnard, S. S. Murray

arxiv:1304.7780 v1 · 2013-04-29 · 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{VD5FKPVWFDJHRYWQOKA25OOFFW}

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	2026-05-18T01:50:14.436790Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8fa553eb628d278e2d07281aeb9c52d9255bfd0fe09ff91e4783a66a8c7d898

Aliases

arxiv: 1304.7780 · arxiv_version: 1304.7780v1 · doi: 10.48550/arxiv.1304.7780 · pith_short_12: VD5FKPVWFDJH · pith_short_16: VD5FKPVWFDJHRYWQ · pith_short_8: VD5FKPVW

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/VD5FKPVWFDJHRYWQOKA25OOFFW \
  | 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: a8fa553eb628d278e2d07281aeb9c52d9255bfd0fe09ff91e4783a66a8c7d898

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b7d9fb9542d37ad8fb89d2ebc14d85a00d94eabb771868310fa3b4bcfde2f69",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-04-29T20:01:16Z",
    "title_canon_sha256": "62ddd8d6eafad7ded8897a0d33b7d5573cdcd9471fdf38328e447345bbffd7f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.7780",
    "kind": "arxiv",
    "version": 1
  }
}