Pith Number

pith:7QUPBCSP

pith:2015:7QUPBCSPG22TSZPZXLMHUXRHFX

not attested not anchored not stored refs pending

Planetary System Formation in Protoplanetary Disk around HL Tauri

Eiji Akiyama, Masahiko Hayashi, Satoru Iguchi, Yasuhiro Hasegawa

arxiv:1511.04822 v1 · 2015-11-16 · 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{7QUPBCSPG22TSZPZXLMHUXRHFX}

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	2026-05-18T01:19:28.817269Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc28f08a4f36b53965f9bad87a5e272df4517384cef8d6a9577fcab9ca138717

Aliases

arxiv: 1511.04822 · arxiv_version: 1511.04822v1 · doi: 10.48550/arxiv.1511.04822 · pith_short_12: 7QUPBCSPG22T · pith_short_16: 7QUPBCSPG22TSZPZ · pith_short_8: 7QUPBCSP

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/7QUPBCSPG22TSZPZXLMHUXRHFX \
  | 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: fc28f08a4f36b53965f9bad87a5e272df4517384cef8d6a9577fcab9ca138717

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "151ab8d735f3180bf997cc280fcbc6c65dd10ab9ea185ad2a831e456d7d6563a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2015-11-16T04:41:44Z",
    "title_canon_sha256": "fd86be98b834cd233a0d01b9ee504bf177d6770698095d95cdfd4df440b5553c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.04822",
    "kind": "arxiv",
    "version": 1
  }
}