Julian David (born 23 December 1989 in Mannheim, Germany) is a German Schlager singer, actor and entertainer, who focuses in the pop song genre. Career After graduating from secondary school, David
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 0xcf239409801daea4e4ea7c1591dfdf388c07a4963e4d42aa3806c5e454b712b2. 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/98712b7f-2759-446d-8579-fc731fda9cd7.json and https://artists.proofprofile.net/proofs/artist/98712b7f-2759-446d-8579-fc731fda9cd7.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758450b79c4585668ccea85f9a45dd77fa7a012a246a9acd7ee2b7ad3ec103ae. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/DEUM71502974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2850a8bfab41d6f8d50fcb02829d44005c39f52a71b7bcfa4be1732758da8bd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEUM71502976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62524ccb8d10f884e74e6766a45a07cda5bb27bd5045cc7470a0071995e970b4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEL712200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd795d64787f930a21c6852e21359720ca6678389aeedc4a4769c468d0d82aa90. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEL712300309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7707b536bee45e2515cb319d2348060e6b3122cbaf785a3954745941ba32ca. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:21:42Z), 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/ITDV92500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a64fe27c01fb8962b84d80490b693cd04f3b994f0547708e093f9ade0ba8ca4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DELV42500804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de29a1f6686a61957a62f01745c6e08a1035b679ab79fb94cdc8cb38c75db93. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/DELV42501082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6eb461ceacec2973e4b92b2809b9452788746b81b488af55b209a59da207e01. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEA761900511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac8671e44a3dcd54d6c2189a4f8655df9db8ba1a6e99b621927192d78b00d7a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEA761900508.