Pith Number

pith:K4RFFDLU

pith:2016:K4RFFDLUGOEFY6VTNPNW52QKIQ

not attested not anchored not stored refs pending

Blueshifted [OI] lines from protoplanetary discs: the smoking gun of X-ray photoevaporation

Barbara Ercolano (LMU Munich, Excellence Cluster Universe), James Owen (IAS, Princeton)

arxiv:1605.04066 v1 · 2016-05-13 · astro-ph.EP · 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{K4RFFDLUGOEFY6VTNPNW52QKIQ}

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	2026-05-18T01:10:29.786766Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5722528d7433885c7ab36bdb6eea0a4405fe70b34d9f51f7cdd90a9cbb119e06

Aliases

arxiv: 1605.04066 · arxiv_version: 1605.04066v1 · doi: 10.48550/arxiv.1605.04066 · pith_short_12: K4RFFDLUGOEF · pith_short_16: K4RFFDLUGOEFY6VT · pith_short_8: K4RFFDLU

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/K4RFFDLUGOEFY6VTNPNW52QKIQ \
  | 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: 5722528d7433885c7ab36bdb6eea0a4405fe70b34d9f51f7cdd90a9cbb119e06

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8045d63f8134333cecd361a51c48f347fd2b269e3ee7e55b8074a32c935c18eb",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2016-05-13T07:14:05Z",
    "title_canon_sha256": "b995bc42a6291028440d56a8ef363fcbe9880b7a0683630f48be4c6aa009a6e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.04066",
    "kind": "arxiv",
    "version": 1
  }
}