Pith Number

pith:PHMMI6M3

pith:2018:PHMMI6M3GZA4FHRQ7XUS44Z3Y2

not attested not anchored not stored refs pending

Internal gas models and central black hole in 47 Tucanae using millisecond pulsars

A. Possenti, A. Ridolfi, F. Abbate, F. Camilo, N. d'Amico, P. C. C. Freire, R. N. Manchester

arxiv:1808.06621 v1 · 2018-08-20 · 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{PHMMI6M3GZA4FHRQ7XUS44Z3Y2}

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	2026-05-18T00:07:05.350962Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

79d8c4799b3641c29e30fde92e733bc69582b05e0e2cc8240dcb9120ffd39713

Aliases

arxiv: 1808.06621 · arxiv_version: 1808.06621v1 · doi: 10.48550/arxiv.1808.06621 · pith_short_12: PHMMI6M3GZA4 · pith_short_16: PHMMI6M3GZA4FHRQ · pith_short_8: PHMMI6M3

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/PHMMI6M3GZA4FHRQ7XUS44Z3Y2 \
  | 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: 79d8c4799b3641c29e30fde92e733bc69582b05e0e2cc8240dcb9120ffd39713

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "def3e16b9db74598799bd81d0f16a5950883152b3f5eb647283387c0e1b56c51",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-08-20T18:00:09Z",
    "title_canon_sha256": "635a4a9c1bc18794ee0cbf0c4d6afa08e83d995cab4ad5851e287bf8827b532a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.06621",
    "kind": "arxiv",
    "version": 1
  }
}