Pith Number

pith:52JUMAWG

pith:2021:52JUMAWGDQBJPWF2S4DGUYQ4YY

not attested not anchored not stored refs pending

Fireball characteristics derivable from acoustic data

Denis Vida, Luke McFadden, Pavel Spurn\'y, Peter Brown

arxiv:2102.06574 v2 · 2021-02-12 · astro-ph.EP · astro-ph.IM · physics.ao-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{52JUMAWGDQBJPWF2S4DGUYQ4YY}

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	2026-07-05T02:25:38.796833Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee934602c61c0297d8ba97066a621cc6348507f48a7b56931a65ba78d7a6a803

Aliases

arxiv: 2102.06574 · arxiv_version: 2102.06574v2 · doi: 10.48550/arxiv.2102.06574 · pith_short_12: 52JUMAWGDQBJ · pith_short_16: 52JUMAWGDQBJPWF2 · pith_short_8: 52JUMAWG

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/52JUMAWGDQBJPWF2S4DGUYQ4YY \
  | 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: ee934602c61c0297d8ba97066a621cc6348507f48a7b56931a65ba78d7a6a803

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da8ad8c06ef51dbe4e81e539114883c2d86a8a2dfb5748b8e10590e735fbf010",
    "cross_cats_sorted": [
      "astro-ph.IM",
      "physics.ao-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2021-02-12T15:29:00Z",
    "title_canon_sha256": "bf3b8812fcd6954d7d9a6946d06219458e100beb663a45b0ad598bfd2b0c6a6c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.06574",
    "kind": "arxiv",
    "version": 2
  }
}