Pith Number

pith:TQANKB4R

pith:2015:TQANKB4R5SLAGAJ5BHGEB7SICI

not attested not anchored not stored refs pending

Steepening of the 820 micron continuum surface-brightness profile signals dust evolution in TW Hya's disk

(2) Harvard-Smithsonian Center for Astrophysics, Chunhua Qi (2), David Bekkers (1), David J. Wilner (2) ((1) Leiden Observatory, Leiden University, Michiel R. Hogerheijde (1), Mihkel Kama (1), Paola Pinilla (1), Sean M. Andrews (2), The Netherlands, USA), Vachail N. Salinas (1)

arxiv:1512.05553 v1 · 2015-12-17 · 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{TQANKB4R5SLAGAJ5BHGEB7SICI}

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	2026-05-18T01:21:25.775628Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9c00d50791ec9603013d09cc40fe48123816526fd5a8878664b4898a47780495

Aliases

arxiv: 1512.05553 · arxiv_version: 1512.05553v1 · doi: 10.48550/arxiv.1512.05553 · pith_short_12: TQANKB4R5SLA · pith_short_16: TQANKB4R5SLAGAJ5 · pith_short_8: TQANKB4R

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/TQANKB4R5SLAGAJ5BHGEB7SICI \
  | 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: 9c00d50791ec9603013d09cc40fe48123816526fd5a8878664b4898a47780495

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f740dc04611425972ab7e93b75ed5d51bf36e826021df6014a4d8201ec5eb10",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-12-17T12:19:09Z",
    "title_canon_sha256": "50668a34c7b5fd6b46265666d8f42e7205d956b895714209fb1ac25238f54d29"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.05553",
    "kind": "arxiv",
    "version": 1
  }
}