Pith Number

pith:Y2UYWFC4

pith:2018:Y2UYWFC4NFS5DRWGSRD2HBL5YF

not attested not anchored not stored refs pending

Unlocking CO Depletion in Protoplanetary Disks I. The Warm Molecular Layer

(2) Harvard-Smithsonian Center for Astrophysics, (3) California Institute of Technology), Dana Anderson (3) ((1) University of Michigan, Edwin A. Bergin (1), Geoffrey A. Blake (3), Kamber R. Schwarz (1), Karin I. \"Oberg (2), Ke Zhang (1), L. Ilsedore Cleeves (2)

arxiv:1802.02590 v1 · 2018-02-07 · astro-ph.EP · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y2UYWFC4NFS5DRWGSRD2HBL5YF}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:18:52.046911Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6a98b145c6965d1c6c69447a3857dc1531675d6ae67b661dd2571af606c18a8

Aliases

arxiv: 1802.02590 · arxiv_version: 1802.02590v1 · doi: 10.48550/arxiv.1802.02590 · pith_short_12: Y2UYWFC4NFS5 · pith_short_16: Y2UYWFC4NFS5DRWG · pith_short_8: Y2UYWFC4

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/Y2UYWFC4NFS5DRWGSRD2HBL5YF \
  | 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: c6a98b145c6965d1c6c69447a3857dc1531675d6ae67b661dd2571af606c18a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e178fceb8fd726e8261bd40bc787bb85eed05f8047d2d4f3fa2a5d055b40b681",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-02-07T19:01:07Z",
    "title_canon_sha256": "8df1e0cc4a1556a09c7d490c305e138011a0fcc0a8480589bd151b336a532902"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.02590",
    "kind": "arxiv",
    "version": 1
  }
}