thumb|Dirk Busch Dirk Busch (born 1951 in Brunsbüttelkoog, Kreis Dithmarschen, Schleswig-Holstein, Germany) is a German professor, singer, songwriter, composer, and music producer.Website of Dirk Bus
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 0x31262b38333971370d3f71ac52e62cf5ff62f713c9adc4d30e4ffb54f5106813. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca7b0199-089e-4a84-8abd-4fc0f3822e78.json and https://artists.proofprofile.net/proofs/artist/ca7b0199-089e-4a84-8abd-4fc0f3822e78.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 0x1389e5ea888ef2eb643414d296c903e38b612631001cb195dcd83096818703a3. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/DEA309783470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68832889f68907fa35f90738afb5eebf805514385d44af0124daa51e45d6893. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/DEA309983400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e40818d5c36247c5e47552f598e0e5529a7f6a84ad6ebb4c3fbb4cff9c3685. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/DEA300596650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dae1334b7a4b072edd78c7b0a628998cc3c9d0b9cbccf2d9579495e12a239f8. 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/DEA300596671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7681c9d013605e4c9ba8e2cd755469c0532b6c0850062bd32382cbabaa0cb23f. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/DEA300596680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f384acefacaf1797ac5ef0da7df4cdda04ad7b28492d754f14a2ddf2f06327. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/DEA301017260.
Ich wünsche mir vom Weihnachtsmann zwei Zähne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e61ac496ecb7a93506c473db40d83b09dc707f42a69cfcce06e6219ff4b2814. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEA301512900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b4fe22966abd751b5f13ecd94051c697c6b91b51d94e12bf53f5fc9bdfba20. 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/DEA301626400.
Genieße dein Leben (Best of 2006 - 2016)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f95bc2a30ae3e3f6ce962e59b4a903b583c778525869ccdd47dd806ff777de7. 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/DEA301626650.
Heimliche Hits - Seine Besten aus 40 Jahren
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1cac607cbe618065e88dcb3e04bfd7851708da869eb733d44274f7ab38aa09. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEA302531190.