Uwe-Michael Wischhoff (born 9 November 1949), known by his stage name Mike Mareen, is a German singer, songwriter and musician. His first musical success was with the band Cemetery Institution who pl
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 0xe5e9c031c03dd73cea4a46d6220b66837f45318693cbd9ec6681cd75103dd2ca. 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/3ec5c5cc-3027-4099-905d-fc54cfd2b17e.json and https://artists.proofprofile.net/proofs/artist/3ec5c5cc-3027-4099-905d-fc54cfd2b17e.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 0x8ed7c78c399d9aa715dcceeb2e3a1648bdd2a465b11917a4af747f8f880f3eab. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/RUB731406530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5a0748df355b2e2a8243f4df9968e1ecb262d6eb2048ebfefbc5d4b5788958. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/DEKB71494780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6639caf23394fb9fa47944581a0f4f570d05d1acc900ccfae68fc945f993a76. 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/DEKB71223279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb2c72b8d1d832db4861e7bbe2160cda8dd35e769ee5c46ee9ef0b8858b5f52. 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/DEKB71494786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abe8e1f4d95451ffd435a5037efd6beb953c66ab109205a1c804fba7e283231. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/DEKB71494760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18e08f58cd5c845c60361e6037d46cd5e21c522043680fc471cac2d86eab6ef. 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/DEKB71494764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953ca9642808e76d4c82d15304b3fbf7ab5e89bfb3fa709ad445580e7f879e37. 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/DEKB71494771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368771d5390d62fd4d4bfb161c74b6bb2cff54543946a7798f0e20c3d800b61f. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/DEKB71494769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820e54e9c6665bb80928a25919cc651a1e3c175c72280abe8e7e7b07f729ffb4. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEKB71500789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c10d82427accef769cacd0b930943175096dc51cc07bbe3811bfad4a2e592d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEKB71494783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820e54e9c6665bb80928a25919cc651a1e3c175c72280abe8e7e7b07f729ffb4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DEKB71500789.
The Original Maxi-Singles Collection Volume 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9790e55d3ada34d7d505f9ce6735a3646414691adb87069b086a6c0a06c1c9a7. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/DEP551600164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56bb7f1890e9cf5ad9ca6590893cca0db7ca27da96e4807188badb7877c76e5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEP552006212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb36e395af77f86a400a6be23f5e2089f3212e7009cd3a3e2e4fdf35cef43c1. 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/DEP552006383.
EIGHTIES EXTREME 1 (Extended Disco Mixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99f42f7cfc4afdb606a1f9b73a83d00591f6da3076e6f1c68bb7f18df2479d2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEKB71494778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99f42f7cfc4afdb606a1f9b73a83d00591f6da3076e6f1c68bb7f18df2479d2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEKB71494778.