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 0x20094f1fd5eeccbe65f85d76ce4b810299bb780c6e6785a27c1288e19fd91997. 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/b36c342c-48b6-49b0-8ffc-b1502c68d605.json and https://artists.proofprofile.net/proofs/artist/b36c342c-48b6-49b0-8ffc-b1502c68d605.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 0x212ba118736d68deca2e3006c945805b46465205ba1d5f959c0b4e8441530c76. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEA810901272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3ed6d2fe030ca6805aa0e93d369142a67b24e69b4211cecf5f1cf118da0007. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEA810901276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977c61c3367511f8e3b9386d08f7d8630929b39917acce5317ad08fd6ef4323b. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/DEA811000378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27309fe4edffab09bab2b205a923f8944140d0f1f60c9d07a36eacf2b85d3c05. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:17:03Z), 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/DEA811000389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d78454a4508df6c5d1e80d757480df900918be1ac0868c928aa13d04d9012e7. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:21:16Z), 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/DEZ041205264.
Star Karaoke Vanessa Neigert (Die Originalproduktionen der Stars zum Mitsingen)