Pith Number

pith:OPL6IDIF

pith:2017:OPL6IDIFVBVLXKVYYUHOFWFPDD

not attested not anchored not stored refs pending

Cosmological investigation of multi-frequency VLBI observations of ultra-compact structure in $z\sim 3$ radio quasars

Jingzhao Qi, Marek Biesiada, Shuo Cao, Tengpeng Xu, Xiaogang Zheng, Xuan Ji, Yu Pan, Zong-Hong Zhu

arxiv:1708.08639 v2 · 2017-08-29 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OPL6IDIFVBVLXKVYYUHOFWFPDD}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:03:09.554131Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73d7e40d05a86abbaab8c50ee2d8af18c83e9291be8570f23f6a24b16dec596e

Aliases

arxiv: 1708.08639 · arxiv_version: 1708.08639v2 · doi: 10.48550/arxiv.1708.08639 · pith_short_12: OPL6IDIFVBVL · pith_short_16: OPL6IDIFVBVLXKVY · pith_short_8: OPL6IDIF

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/OPL6IDIFVBVLXKVYYUHOFWFPDD \
  | 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: 73d7e40d05a86abbaab8c50ee2d8af18c83e9291be8570f23f6a24b16dec596e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aed39b7f244266f167bbddf5c1e02507ce7b77cfcbc20fb73ae2e79015e31115",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2017-08-29T08:31:07Z",
    "title_canon_sha256": "c44a4455c8b4e6c213ee9ce3b6f9b8468116bac45c196bfaca0b95918284f419"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.08639",
    "kind": "arxiv",
    "version": 2
  }
}