Michael or Mike Koch may refer to: Michael Koch (basketball) (born 1966), German basketball coach and player Michael Koch (film director) (born 1982), Swiss film director and screenwriter Michael Koc
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 0x34e52bb470b946459af75851cca5cfb9b512c02d80582c4cc6ed3ecaa54c03aa. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d03acb11-e837-4446-a557-bc662e7c1e3d.json and https://artists.proofprofile.net/proofs/artist/d03acb11-e837-4446-a557-bc662e7c1e3d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Christian Bischoff Meisterwerk Leben Musik 3
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 0xe31c0897a0ee5956c8ff9844975896ca2480b4297b5a49104cec3fc5ed643e9c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DESQ91600214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e76d251e318a9ebe422dcb813311db213bfb9d28c9d309f58067a4a159001e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DESQ91600224.
Christian Bischoff Meisterwerk Leben Meditationsmusik 1
Christian Bischoff Meisterwerk Leben Meditationsmusik 2
Christian Bischoff Meisterwerk Leben Meditationsmusik 3
Christian Bischoff Meisterwerk Leben Meditationsmusik 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf34c0394018685d9963c12d0cb5d75aa5bce5493039a83cb17bf4fb111f3e35. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DESQ92000288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ba57f2e653d6ac2bff5938dd69ce99c44a5a24470e5b211a6454f694c31696. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DESQ92000290.
Der Schmetterling ist in die Rose verliebt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a0e2a2872abc2daa576796b71e95ca1cf2fe9f816ad4050b8f6bfccc3dd7e4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DESQ92100296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a82cd4274db3ca1ddfe12f2a5d06039442db0ed971b5dcd5a5ad6d2f97d253. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/DESQ92100302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f77203d3d66e2f59e6ed376a9cfd7e37714f74fd05d35de4bdbec71933986f. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/DESQ92100300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41c309f433ba63c8f56f959939bb05021a7c5040f5a352013354a9fc1cd2a88. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DESQ92300344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961e93ae06cd4316d3f3b0b2b61ebace4b09ae9b307329990b3a21d8cc85245a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DESQ92400346.