Every day at 00:15 (Madrid time) we record every pick published the day before in a fingerprint: a hash tree whose root is sealed in Bitcoin with OpenTimestamps. Anyone can check that a pick existed that day with that content, and whether it was changed or deleted later.
Corrected by the Tipsterland team
Recorded on 10/21/2026 at 05:42 PM, included in the fingerprint of 10/21/2026.
Corrected by the Tipsterland team on 10/23/2026: odds 2.09 → 1.5.
This isn't a change by the tipster: the verification team decided it. The original fingerprint is intact and can be checked below.
Recorded content:
["tipsterland-huella-pick",1,1018343,12317,"2026-10-21T15:42:42Z","Magda Linette - Katerina Siniakova; Elena Rybakina - Polina Kudermetova","2026-10-22T04:00:00Z","sha256:c820030505556f0280dce61100f7207f98dcd34696e6fc03647975d300d0e0dc","2.09","1"]
Selection nonce: 9605652e7c8a91fcad16fa2e1983aa0d
How to check without trusting us: the leaf is SHA-256(0x00 + content) and each step SHA-256(0x01 + left + right). If the path reaches the root and the .ots verifies with the official OpenTimestamps client (ots verify), the pick was recorded that day. This proves when it was published and that it wasn't touched; it says nothing about whether the pick is good.