Pith Number

pith:QGYRXMSX

pith:2020:QGYRXMSXOD356KB4EHVGFJVM7I

not attested not anchored not stored refs pending

DR 21 South Filament: a Parsec-sized Dense Gas Accretion Flow onto the DR 21 Massive Young Cluster

Bin Li, Bo Hu, Guangxing Li, Jian Dong, Juan Li, Junhao Liu, Junzhi Wang, Keping Qiu, Yue Cao, Yuwei Wang, Zhiqiang Shen

arxiv:2012.02648 v1 · 2020-12-04 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QGYRXMSXOD356KB4EHVGFJVM7I}

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	2026-07-05T02:17:43.620289Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81b11bb25770f7df283c21ea62a6acfa36161fe0d117fe937e6f588582656f02

Aliases

arxiv: 2012.02648 · arxiv_version: 2012.02648v1 · doi: 10.48550/arxiv.2012.02648 · pith_short_12: QGYRXMSXOD35 · pith_short_16: QGYRXMSXOD356KB4 · pith_short_8: QGYRXMSX

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/QGYRXMSXOD356KB4EHVGFJVM7I \
  | 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: 81b11bb25770f7df283c21ea62a6acfa36161fe0d117fe937e6f588582656f02

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b4be26bfd93ea4d9f0b9cf81b82d7946b76b165ac9f103e61e6f81eed9d4c6f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-12-04T15:10:31Z",
    "title_canon_sha256": "0a5b5da32eea5e02cbac19c3921414c4c7f378f3561d03e448ce736f621e1804"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.02648",
    "kind": "arxiv",
    "version": 1
  }
}