Pith Number

pith:D2ZIETJD

pith:2021:D2ZIETJDEHPJ74MGSP4HS2EVYH

not attested not anchored not stored refs pending

Formation and evolution of protostellar accretion discs. II. From 3D simulation to a simple semi-analytic model of Class 0/I discs

Matthew W. Kunz, Wenrui Xu

arxiv:2109.07535 v1 · 2021-09-15 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D2ZIETJDEHPJ74MGSP4HS2EVYH}

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	2026-07-05T03:17:59.695093Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1eb2824d2321de9ff18693f8796895c1ea7fef99dc785a06521a15acc3cf8ee3

Aliases

arxiv: 2109.07535 · arxiv_version: 2109.07535v1 · doi: 10.48550/arxiv.2109.07535 · pith_short_12: D2ZIETJDEHPJ · pith_short_16: D2ZIETJDEHPJ74MG · pith_short_8: D2ZIETJD

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/D2ZIETJDEHPJ74MGSP4HS2EVYH \
  | 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: 1eb2824d2321de9ff18693f8796895c1ea7fef99dc785a06521a15acc3cf8ee3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7dffe98c8f6c37ae1cae4c9be607e1c042dfd6be4b5a1188908eb5a20cde837",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2021-09-15T19:02:41Z",
    "title_canon_sha256": "bf838cb05f0689b32f94b78a44320f8983cea3a0e4e1125995187fadcaffe6db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.07535",
    "kind": "arxiv",
    "version": 1
  }
}