Pith Number

pith:P5VC637K

pith:2019:P5VC637KZTLNYAGDLI5JOJRFDJ

not attested not anchored not stored refs pending

Cometary compositions compared with protoplanetary disk midplane chemical evolution. An emerging chemical evolution taxonomy for comets

Catherine Walsh, Christian Eistrup, Ewine F. van Dishoeck

arxiv:1907.11255 v1 · 2019-07-25 · 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{P5VC637KZTLNYAGDLI5JOJRFDJ}

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	2026-07-05T00:03:50.571925Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f6a2f6feaccd6dc00c35a3a9726251a64906d9df4d1b2447b965c96fc70d320

Aliases

arxiv: 1907.11255 · arxiv_version: 1907.11255v1 · doi: 10.48550/arxiv.1907.11255 · pith_short_12: P5VC637KZTLN · pith_short_16: P5VC637KZTLNYAGD · pith_short_8: P5VC637K

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/P5VC637KZTLNYAGDLI5JOJRFDJ \
  | 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: 7f6a2f6feaccd6dc00c35a3a9726251a64906d9df4d1b2447b965c96fc70d320

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae89ee7576a45a2610e4bd9536558568474395418da95705e06f15372e9878c0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-07-25T18:02:19Z",
    "title_canon_sha256": "ea209a9cc8ad157b7fb7f671e6741bb9048f4e09868e372c2c24c00558779da8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.11255",
    "kind": "arxiv",
    "version": 1
  }
}