Pith Number

pith:U4X4QTCU

pith:2019:U4X4QTCUM3755YPMZFT4KO3BCT

not attested not anchored not stored refs pending

Filling the Mass Gap: How Kilonova Observations can Unveil the Nature of the Compact Object Merging with the Neutron Star

Alberto Colombo, Albino Perego, Claudio Barbieri, Giancarlo Ghirlanda, Monica Colpi, Om Sharan Salafia

arxiv:1912.03894 v1 · 2019-12-09 · 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{U4X4QTCUM3755YPMZFT4KO3BCT}

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	2026-07-05T00:30:38.640557Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a72fc84c5466ffdee1ecc967c53b6114d6fca7dd6698e8193e2e36d3a8eff654

Aliases

arxiv: 1912.03894 · arxiv_version: 1912.03894v1 · doi: 10.48550/arxiv.1912.03894 · pith_short_12: U4X4QTCUM375 · pith_short_16: U4X4QTCUM3755YPM · pith_short_8: U4X4QTCU

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/U4X4QTCUM3755YPMZFT4KO3BCT \
  | 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: a72fc84c5466ffdee1ecc967c53b6114d6fca7dd6698e8193e2e36d3a8eff654

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8800c7b9c8d521b63d9da92aa9647a8a0199d760c6274ac9aa7e9bd21ade3cf6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-12-09T08:17:30Z",
    "title_canon_sha256": "0a1342271d8a64db75e256c192092da5855f0d1ae1c00e9ebdd14fc607566074"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.03894",
    "kind": "arxiv",
    "version": 1
  }
}