Andreas Bach (born 10 October 1968, in Erfurt) is a German former track cyclist. He won the team pursuit at the 1994 UCI Track Cycling World Championships with Guido Fulst, Danilo Hondo and Jens Lehma
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 0xad3770cc5e32d686cb947c0688903a422d029bc611fb441539f16372cc96e513. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4742ad5-8469-4ca3-a7b6-d95ac44109db.json and https://artists.proofprofile.net/proofs/artist/f4742ad5-8469-4ca3-a7b6-d95ac44109db.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Schumann: Fantasie In C-dur, Op.17 & Davidsbündlertänze, Op. 6
Schumann: Album For The Young, Op. 68 (Digitally Remastered)
Ich mag keine Klassik, aber das gefällt mir! - Für Kinder
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 0xcd484847cc1155cb42cc363dd33fe493d44f81f3cccf80159c02f9fe8aa8c65a. 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/DEP629700792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd484847cc1155cb42cc363dd33fe493d44f81f3cccf80159c02f9fe8aa8c65a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEP629700792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd484847cc1155cb42cc363dd33fe493d44f81f3cccf80159c02f9fe8aa8c65a. 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/DEP629700792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd484847cc1155cb42cc363dd33fe493d44f81f3cccf80159c02f9fe8aa8c65a. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEP629700792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd484847cc1155cb42cc363dd33fe493d44f81f3cccf80159c02f9fe8aa8c65a. 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/DEP629700792.