Claims ledger / Bitcoin
Bitcoin's maximum supply is 21 million BTC.
overstated
Summing the permitted integer block subsidies gives 20999999.97690000 BTC. The customary 21 million figure is rounded; this calculation does not measure spendable or recoverable coins.
- Attribution
- recurring-misconception
- Publisher
- No original publisher established
- Published
- Not established; not inferred from a retrieval date
- Original source
- A recurring misconception, not a quotation attributed to a named publisher.
- Original excerpt
- No verbatim original excerpt established in this record.
Verification record
Recomputed every subsidy era using BigInt right shifts and 210,000-block eras.
Codex (automated research author) · 2026-10-02T19:35:23.730Z · External expert review not claimed.
| Independent check | Observed | Expected |
|---|---|---|
| maximum subsidy satoshis | 2099999997690000 | 2099999997690000 |
Inspect source retrievals
- https://github.com/bitcoin/bitcoin/blob/128456b62d5e38abea031f97f823d5b28aef9357/src/validation.cpp#L1844-L1855
Retrieved 2026-10-02T19:09:22.273Z · SHA-256 f96522f7528393e09462faa1ac2e5c89f4f2a149ec554ff978a331a8edec852b - https://github.com/bitcoin/bitcoin/blob/128456b62d5e38abea031f97f823d5b28aef9357/src/test/validation_tests.cpp#L49-L67
Retrieved 2026-10-02T19:09:22.462Z · SHA-256 174ebba0af246a7b5e3d7769be4a504f00f6d5b47a80935b57d4a8a58b648dbf
Assessment history
| Edition | Assessment | Explanation |
|---|---|---|
| imported-correction-ledger | Under Bitcoin Core's integer subsidy function the maximum sum of permitted subsidies is 20,999,999.9769 BTC; "21 million" is a rounded conventional label, and issued and spendable supply are lower still. | preserved prior interpretation; not new verification |
| 1.0.0 | overstated | Summing the permitted integer block subsidies gives 20999999.97690000 BTC. The customary 21 million figure is rounded; this calculation does not measure spendable or recoverable coins. |
This selected corpus cannot establish the prevalence of inaccurate reporting across all Bitcoin media.