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 0xc3f5a5d6670de1748bba3340bc72799d8328493c61b92d66a65e38522cc05c39. 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/f8147958-67d4-41c7-bf24-4d4794079197.json and https://artists.proofprofile.net/proofs/artist/f8147958-67d4-41c7-bf24-4d4794079197.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 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 0x30cd8198a5fb8a631aae074606983eab2ac6f69cb7b99972957301f73f9047db. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TR0330605633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801f7e347615159d534b044dbb2ece5dd70f83104bd3f95f607b23f13b8c30f1. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/TR0330605632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54c4e58b3b384b6b0fe43b138d695675ee8ba6ff93706dffc914049728d2e8c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TR0330605640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f005e92637a18f55d05ee3dd38410a5446b63f87e1cca9f4b87c45720282ab. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/TR0330605641.
Laylaylom: İki Dilli - Müzikle Türkçe Öğreniyorum - Türkisch mit musikalischen und literarischen Elementen / Ünite 4 - Lektion 4
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Laylaylom: İki Dilli - Müzikle Türkçe Öğreniyorum - Türkisch mit musikalischen und literarischen Elementen / Ünite 1 - Lektion 1
Laylaylom: İki Dilli - Müzikle Türkçe Öğreniyorum - Türkisch mit musikalischen und literarischen Elementen / Ünite 3 - Lektion 3
Laylaylom: İki Dilli - Müzikle Türkçe Öğreniyorum - Türkisch mit musikalischen und literarischen Elementen / Ünite 2 - Lektion 2