Moritz Wilken (born 19 May 1988 in Meerbusch), better known by his stage name grim104, is a German rapper, who is signed to the Hamburg label Buback. Together with the rapper Testo he forms the hip-h
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 0xfcf47c41b0c694796196309e37c8dc85909895ee9003bccc3301372342c47848. 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/4eaab173-b28f-4322-8505-d710fbf24203.json and https://artists.proofprofile.net/proofs/artist/4eaab173-b28f-4322-8505-d710fbf24203.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 0xd54f277bf8dd5004a73a9b970da52233d66bf1bdc25035a2a0e260ecf3248130. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEUE22185036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8c1369ec7c3162068b09d013cf43c759f4f602700d82960cb3e5c22d4237da. 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/DEUE22185037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d53d2b9f5470f3fa0e89c9e9f07863e95142ee339bde169adad65fafa2e21d6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUE22185038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cf40f4fe4702fcbebfe74075cb9c66de3470ffdaae5f0b58f2c9c994cf5e08. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUE22185039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8117bedf666cbd632414c89f479d7f8b031c9c2a7e5c2bcae9c5f92de6dcd39. 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/DEUE22185040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a0a1eb77ae74ed5179ba8fd8afc8a5cf1a6e446a55c37154457fe99a9553f1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEUE22185041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f9d7c72bd4270799e8d422125745a9c0ae38cabd87d9795b98334f5289684e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEUE22185042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf40d99f4349426c11ce702f862a34608df0e90d3e7fe0c649a2232dc092abd. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEUE22185043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5d1f292b86ae1ab89d59c8c017ba3c7791537c171e4446920c4a7f3b7fc8ca. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEUE22185044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef26d30597e873fde24a52f48328989c725bd7c7d01c2efe46e97f3e225c7cb4. 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/DEUE22185045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92214df1b87372c360b64cf2d67621870e01d2d6049c8032397d1478c1c049a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEQ121430262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8eb21e05ee4315152e93ca4706cb90171a4bd8060fd4eed3bcbec7f28970de. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEQ121430273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57efdb9836ed0bae240c4ec06092cfabab81fa34d336b0857e740979a62ec7d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEUE22350278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd402b9087a2b86bb763d660a5db77920c7637d8aeb6ae850c8ae86fd28649740. 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/DEUE22350279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dd30b89e48091b964ee9f407cf6e190ed24b30941ee6bc47916c0e5f52a456. 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/DEUE22350281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebefd1385448030030a7dfc0d99a9589e4055eb9214b37d66915eb6d12df24b2. 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/DEUE22350283.