Pith Number

pith:ZRGP7IJF

pith:2019:ZRGP7IJF75IZVN4UP4UQNGAJIN

not attested not anchored not stored refs pending

Data challenges as a tool for time-domain astronomy

Ren\'ee Hlo\v{z}ek

arxiv:1908.10540 v1 · 2019-08-28 · astro-ph.IM · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZRGP7IJF75IZVN4UP4UQNGAJIN}

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	2026-07-05T00:06:55.908507Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc4cffa125ff519ab7947f290698094379904db17f0ccbdcbd9858ffbd9d35b3

Aliases

arxiv: 1908.10540 · arxiv_version: 1908.10540v1 · doi: 10.48550/arxiv.1908.10540 · pith_short_12: ZRGP7IJF75IZ · pith_short_16: ZRGP7IJF75IZVN4U · pith_short_8: ZRGP7IJF

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/ZRGP7IJF75IZVN4UP4UQNGAJIN \
  | 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: cc4cffa125ff519ab7947f290698094379904db17f0ccbdcbd9858ffbd9d35b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "043538c8c27e0f57b62403e93df2f852f7d507f8c8307e27c5499d86690530b7",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-08-28T04:10:03Z",
    "title_canon_sha256": "04f6d036295acd8006a76866c99ae2f09866e7327644d0c0f18d358d3f6f8bba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.10540",
    "kind": "arxiv",
    "version": 1
  }
}