Pith Number

pith:V5GCOGI4

pith:2021:V5GCOGI4EZZU6QHBAQRQMLB4LR

not attested not anchored not stored refs pending

Detectability of optical transients with timescales of sub-seconds

Fumihiko Usui, Jun-ichi Watanabe, Ko Arimatsu, Kohji Tsumura, Takafumi Ootsubo

arxiv:2101.02454 v1 · 2021-01-07 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{V5GCOGI4EZZU6QHBAQRQMLB4LR}

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	2026-07-05T02:19:43.144768Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af4c27191c26734f40e10423062c3c5c5e6a5c58e09bdd8fd9968a5fc4f96755

Aliases

arxiv: 2101.02454 · arxiv_version: 2101.02454v1 · doi: 10.48550/arxiv.2101.02454 · pith_short_12: V5GCOGI4EZZU · pith_short_16: V5GCOGI4EZZU6QHB · pith_short_8: V5GCOGI4

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/V5GCOGI4EZZU6QHBAQRQMLB4LR \
  | 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: af4c27191c26734f40e10423062c3c5c5e6a5c58e09bdd8fd9968a5fc4f96755

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f909e40513fd94f481967bfbce1325faa8a3d842b3f5c3f5b7213d811e69d96",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2021-01-07T09:40:01Z",
    "title_canon_sha256": "b6c1bb6294a3a766aee598b5836f3cd33cb387e3e1084d2590b1881b227cb6f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.02454",
    "kind": "arxiv",
    "version": 1
  }
}