Check a pick's record

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.

Recorded and unchanged

Recorded on 11/04/2026 at 11:52 PM, included in the fingerprint of 11/04/2026.

Pick: #1026492Paid
Tipster: SPA OVER EXPERT (@SpaOverExpert)
Selection: Hidden: this is an unsettled paid pick. The fingerprint stores its hash; it can be checked once it settles.
Fingerprint of 11/04/2026: 776260ba 2bd643f2 28e0b22a 7037d358 0d261dd7 551099c0 eb3702b2 a5abf7c6
Pick leaf: 0c380abd 390bdccb 15c5259e d82eb6ff 33392ca6 81e5617e add36696 78806785Position 550 of 551
Bitcoin seal: Anchored in Bitcoin block 974604. Download the .ots

Inclusion proof (5 steps)

1. left ea201e7ca4bc0f72b3c3d7056ccfddc9500e229a876cec78bfcfe6afc46df5b5
2. right f6a0ce9557bc6b12abc420ebfb491dc6541b2ed401d380711c4e14909de7f042
3. left 8f27139a08dd32141549f393fe0107b353a21fff14105a7c758c34c1b76b1c46
4. left 40db2dae434b96759aae337c6fdca404c6a5e20ac9c2b43c7cae07f4fa96e455
5. left 6f6e79bd683e702d9c9049ce47f667f442169cf8b79b4611e679c7dd24d004be

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.