Pith Number

pith:LFT77TUI

pith:2020:LFT77TUIQAKVFDALNL42XPIG7A

not attested not anchored not stored refs pending

Supermassive Binary Black Hole Evolution can be traced by a small SKA Pulsar Timing Array

Chao-Wei Tsai, Di Li, Yi Feng, Zheng Zheng

arxiv:2005.11118 v2 · 2020-05-22 · astro-ph.IM · 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{LFT77TUIQAKVFDALNL42XPIG7A}

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	2026-07-05T01:19:05.974604Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5967ffce888015528c0b6af9abbd06f83beb248967fd720585bb92404f71a649

Aliases

arxiv: 2005.11118 · arxiv_version: 2005.11118v2 · doi: 10.48550/arxiv.2005.11118 · pith_short_12: LFT77TUIQAKV · pith_short_16: LFT77TUIQAKVFDAL · pith_short_8: LFT77TUI

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/LFT77TUIQAKVFDALNL42XPIG7A \
  | 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: 5967ffce888015528c0b6af9abbd06f83beb248967fd720585bb92404f71a649

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40d1b1dbc4f19b5bacfb2af417ae402d7815dfc587492cc5fae08138f0135087",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2020-05-22T11:48:49Z",
    "title_canon_sha256": "30d37caad2aaa19d635f398f95ab12b448a2e2c1c54fe5cd3ae339fa5457c0eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.11118",
    "kind": "arxiv",
    "version": 2
  }
}