Pith Number

pith:TDYPZV6Q

pith:2019:TDYPZV6QPAM7BYOX2BFZZQPQ42

not attested not anchored not stored refs pending

The Metal-Rich Atmosphere of the Neptune HAT-P-26b

Nikku Madhusudhan, Ryan J. MacDonald

arxiv:1903.09151 v1 · 2019-03-21 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TDYPZV6QPAM7BYOX2BFZZQPQ42}

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	2026-05-17T23:47:35.640523Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

98f0fcd7d07819f0e1d7d04b9cc1f0e68c763c80a2f13fe75032308c6a7ec424

Aliases

arxiv: 1903.09151 · arxiv_version: 1903.09151v1 · doi: 10.48550/arxiv.1903.09151 · pith_short_12: TDYPZV6QPAM7 · pith_short_16: TDYPZV6QPAM7BYOX · pith_short_8: TDYPZV6Q

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/TDYPZV6QPAM7BYOX2BFZZQPQ42 \
  | 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: 98f0fcd7d07819f0e1d7d04b9cc1f0e68c763c80a2f13fe75032308c6a7ec424

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e92f4a726e7bb41add787719d2b59f15add4ce5c72a091b6713d3125bf8b6c15",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-03-21T18:00:00Z",
    "title_canon_sha256": "80444e9bc9141977bc22e49a4852c554686835bbfc578fa9941e02525c662652"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.09151",
    "kind": "arxiv",
    "version": 1
  }
}