Pith Number

pith:RQKA2V7I

pith:2009:RQKA2V7I3K6QQSBI4WGFSECMJK

not attested not anchored not stored refs pending

Discovery of a Young L Dwarf Binary, SDSS J224953.47+004404.6AB

K. N. Allers, Michael C. Cushing, Michael C. Liu, Trent J. Dupuy

arxiv:0912.4687 v2 · 2009-12-23 · 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{RQKA2V7I3K6QQSBI4WGFSECMJK}

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	2026-05-18T02:33:55.498254Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c140d57e8dabd084828e58c59104c4a876bc124bcf3d3398e6e813fdaeaae5c

Aliases

arxiv: 0912.4687 · arxiv_version: 0912.4687v2 · doi: 10.48550/arxiv.0912.4687 · pith_short_12: RQKA2V7I3K6Q · pith_short_16: RQKA2V7I3K6QQSBI · pith_short_8: RQKA2V7I

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/RQKA2V7I3K6QQSBI4WGFSECMJK \
  | 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: 8c140d57e8dabd084828e58c59104c4a876bc124bcf3d3398e6e813fdaeaae5c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "613e92b96a76dc19b6c02ea84780dd94e846886d21b0ce0405a3dfcd48a94ba3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-12-23T16:52:32Z",
    "title_canon_sha256": "d534c75ccb005198c6da94aebb6e84be2fac7bcc9947caf4b8b017e73ac0f879"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.4687",
    "kind": "arxiv",
    "version": 2
  }
}