Pith Number

pith:FKAHHUAJ

pith:2019:FKAHHUAJLZTTZL5FKUQATKFZSA

not attested not anchored not stored refs pending

Disk masses in the Orion Molecular Cloud-2: distinguishing time and environment

Alvaro Hacar, Ewine F. van Dishoeck, Sierk. E. van Terwisga

arxiv:1905.09804 v1 · 2019-05-23 · astro-ph.SR · astro-ph.EP · 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{FKAHHUAJLZTTZL5FKUQATKFZSA}

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	2026-07-04T23:55:42.438086Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a8073d0095e673cafa5552009a8b99035e5c2b98c86ac8a20c93ec7a87f7524

Aliases

arxiv: 1905.09804 · arxiv_version: 1905.09804v1 · doi: 10.48550/arxiv.1905.09804 · pith_short_12: FKAHHUAJLZTT · pith_short_16: FKAHHUAJLZTTZL5F · pith_short_8: FKAHHUAJ

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/FKAHHUAJLZTTZL5FKUQATKFZSA \
  | 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: 2a8073d0095e673cafa5552009a8b99035e5c2b98c86ac8a20c93ec7a87f7524

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8dd49c1d92554f7ba268fb94c8e5440295fe8800c7aad842bae8f3cab559352",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-05-23T17:54:27Z",
    "title_canon_sha256": "7808f4689fcb268009f72ca7ad74d7369a13bd9bef2a94746989fca6af406eca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.09804",
    "kind": "arxiv",
    "version": 1
  }
}