Pith Number

pith:DJJIYYYF

pith:2020:DJJIYYYFDKFPCBUWXIC7X5NLTA

not attested not anchored not stored refs pending

First Images of the Protoplanetary Disk Around PDS 201

Alexander Bohn, Daniel Apai, David Doelman, Emily Mailhot, Frans Snik, Joan Najita, Jordan Stone, Kevin Wagner, Matthew Kenworthy, Miriam Keppler, Ruobing Dong, Ryan Webster, Sean Brittain, Steve Ertel

arxiv:2004.06157 v2 · 2020-04-13 · astro-ph.SR · 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{DJJIYYYFDKFPCBUWXIC7X5NLTA}

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	2026-07-05T01:02:16.097872Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1a528c63051a8af10696ba05fbf5ab982045d0f1e915adf7f769361989e97bad

Aliases

arxiv: 2004.06157 · arxiv_version: 2004.06157v2 · doi: 10.48550/arxiv.2004.06157 · pith_short_12: DJJIYYYFDKFP · pith_short_16: DJJIYYYFDKFPCBUW · pith_short_8: DJJIYYYF

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/DJJIYYYFDKFPCBUWXIC7X5NLTA \
  | 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: 1a528c63051a8af10696ba05fbf5ab982045d0f1e915adf7f769361989e97bad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6a72e23be42f43f1c6a536a185e9b6b6a30c948188625cc45229e98ebc4d8ef8",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-04-13T19:04:36Z",
    "title_canon_sha256": "68fb6cc24515519e79264bd9cf53010497b6ba0a459e6a3c2adb1ddae929a795"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.06157",
    "kind": "arxiv",
    "version": 2
  }
}