Impuls Flugdrachen GmbH (), usually just called Impuls, was a German aircraft manufacturer that specialized in beginner and flight training hang gliders. The company was headquartered in Munich.Bertra
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 0x7fd6c92918c7c8082f18d00c289e8bfe0628d1d597a4a4b7a8e253ca69f42693. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c5aaa7d-5edd-4879-a4c9-bc2f489aba55.json and https://artists.proofprofile.net/proofs/artist/2c5aaa7d-5edd-4879-a4c9-bc2f489aba55.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 0xc7e93d637fe646f1b765c5a182507dcd353bc60da0d56bbc306e682a85e1430c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PLH751400375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd51a64ebfb3556d059c7cc0c495ad0a0c199dcdee1fc0c4edee1bf45adf6662. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/PLH751300341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18d6be736c8c6f1e769b2e4d2159cd92449d57c67c454ea8dd1e04f450b37c9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PLH751400380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcc7aec90a3d5a4f4065d6b7656aac6861865067fb1f7a3010bdadecd116479. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/PLG231500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ee0bc6ba08039ca7c9bed2ace1556fcdf5e196ed856f0591d91d132c550953. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PLG231400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10922d6f23ce28d1c5ca0d045b5d156f041d42edb3004a39fffcc68a8619d8f6. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/PLG231600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd74840743f3a78abf564ca9bef0ecceea88266eea38ba49196692fbc17ea9b7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/PLO382300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a3f15c6412fbe15fe46f2f26838fc5957f956b83ff48b01112438eb49ef767. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PLO382300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728b746cba96196a68b7759d2af2af26511ff5ce4e4fe451986fd1d35c5cf7c7. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/PL1D72400184.