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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd9ab5a12bc9413b1eb14c2a9c83bf97cd85570a7562752482bce33e4329994. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68ebf870-91bb-403c-869e-ae2311197c61.json and https://artists.proofprofile.net/proofs/artist/68ebf870-91bb-403c-869e-ae2311197c61.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pixi Hören: Pixi Hören. Ostergeschichten
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada2f8c285c421c9061de47b91ca3951f4aa5940f7dd1884590218dd1794ed35. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAF71476392.
Pixi Hören: Pixi Hören. Winterspaß mit Pixi
Der kleine Zauberer (Pixi Gute Nacht Geschichte 09)
Unser erster Schultag (Pixi Gute Nacht Geschichte 08)
Our First Day of School (Pixi Bedtime Stories 08)
Paul the Magician (Pixi Bedtime Stories 09)