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 10/09/2026 at 11:05 PM, included in the fingerprint of 10/09/2026.

Pick: #1010909
Tipster: MotoGPassion (@MotoGPassion)
Event: <Sesión clasificatoria> motogp
Selection: Marc Márquez mejor que Acosta · @1.6 · stake 0.75
Fingerprint of 10/09/2026: 3b4117b3 ab495ffc 7c0bbdb1 e01bed5e 38b4fdda b3bb6529 152fa34a 28fd96b0
Pick leaf: bc1ce93a 48d7de2e b3f6a24f 7a8aabcd 99dfbb86 a87e0d7a 443c6a22 e0e309a6Position 533 of 560
Bitcoin seal: Anchored in Bitcoin block 970685. Download the .ots

Inclusion proof (7 steps)

1. right 5b7223f4524b56ebc08339965140d1397379bea83cb2514b6d2dbe893d20fc50
2. right 417fac0703932713b3ba49f6a2d21492bd2be2cbe6d84d59013e53c30a0293bc
3. left d94a56489c95a22782d3fe2991a02ccb354e7b9353303a83d8d0b3f028273656
4. right e0f3b7ac759d59ccc19289b15b013970417b2c0cf986a107b47a0129fdd8fc6b
5. left 0c9aabd4379bc21db7e59c6f2a069c877dd41438e4f460d99870e4705a842fb9
6. right 3c50bffe0c65ed36348488e53a26c6a685c60109b43de412247e79d174f92788
7. left 50e4429858c15c9261710f336031a39d2a00b6890605c762a13b74b5e897c2d1

Recorded content:

["tipsterland-huella-pick",1,1010909,1057,"2026-10-09T21:05:19Z","<Sesión clasificatoria> motogp","2026-10-10T03:10:00Z","Marc Márquez mejor que Acosta","1.6","0.75"]

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.