Pith Number

pith:Y7NAFDGI

pith:2017:Y7NAFDGIXW7NTZTSUMLBJOMDSJ

not attested not anchored not stored refs pending

VLBA 24 and 43 GHz observations of massive binary black hole candidate PKS 1155+251

Jun Yang, Lang Cui, Ligong Mi, Luis C. Ho, Tao An, Xiang Liu, Xiaolong Yang, Xiaoyu Hong

arxiv:1707.03121 v1 · 2017-07-11 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y7NAFDGIXW7NTZTSUMLBJOMDSJ}

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	2026-05-18T00:39:56.370080Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c7da028cc8bdbed9e672a31614b9839248c416d439546ae81e8683c3437f3977

Aliases

arxiv: 1707.03121 · arxiv_version: 1707.03121v1 · doi: 10.48550/arxiv.1707.03121 · pith_short_12: Y7NAFDGIXW7N · pith_short_16: Y7NAFDGIXW7NTZTS · pith_short_8: Y7NAFDGI

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/Y7NAFDGIXW7NTZTSUMLBJOMDSJ \
  | 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: c7da028cc8bdbed9e672a31614b9839248c416d439546ae81e8683c3437f3977

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc9f4d38f4946f8ab54ed60d92536b624c6c76706dc477f3d4dadf0ec3470fe7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-07-11T03:36:29Z",
    "title_canon_sha256": "dee33341319c46fd88250a643b08c0b8f56f03933bd0364f41742f19bf808842"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.03121",
    "kind": "arxiv",
    "version": 1
  }
}