1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd875e091b65934c36c3964a150090c80c2c97ed00bc76fae6b1b7febb93e263b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f19a3cc9-fd61-48c4-a010-24132aefb630.json and https://artists.proofprofile.net/proofs/artist/f19a3cc9-fd61-48c4-a010-24132aefb630.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Runaway Pony (Pixi Sleepytime - Gentle Bedtime Stories 4)
Unterwegs in den Bergen (Pixi Gute Nacht Geschichten 68)
Schnuppertag in der Schule (Pixi Gute Nacht Geschichten 70)
Der tolle Ranzen (Pixi Gute Nacht Geschichten 69)
Die Piratenschule (Pixi Gute Nacht Geschichten 72)
Versteckspiel im Opernhaus (Pixi Gute Nacht Geschichten 76)
Ein Drache im Schloßgarten (Pixi Gute Nacht Geschichten 75)
Die Prinzessin will mitspielen (Pixi Gute Nacht Geschichten 74)
Der Prinzessinnen-Wettstreit (Pixi Gute Nacht Geschichten 73)
Nur Mut, Ritter Knud! (Pixi Gute Nacht Geschichten 71)
The Ticklish Pony (Pixi Sleepytime - Gentle Bedtime Stories 6)
Visiting Day at School (Pixi Bedtime Stories 70)
The Princess Contest (Pixi Bedtime Stories 73)
Be Brave, Sir Knute! (Pixi Bedtime Stories 71)
"Pirate School" (Pixi Bedtime Stories 72)
The Perfect Backpack (Pixi Bedtime Stories 69)