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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de37aacdfa46fbe4d3c3fd3edd6eeb6a143e229bb3ea171534342b852e06196. 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/b270e8f3-1ae8-4a9d-8a8d-7d69cee086cb.json and https://artists.proofprofile.net/proofs/artist/b270e8f3-1ae8-4a9d-8a8d-7d69cee086cb.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa8470744bd578597277a38f18e04690a32f193b5f989cda62007dc1833af02. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-17T00:00:08Z), 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/AEA0D2013169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4c9fe0e9c93cd50407544e42c1e47ae89ce747e8ed56957abbbd7d47f548ee. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:08:48Z), 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/UKR6V2358743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d5baca658c9b5de739c8aa0d57b0f6bcedf9c59423660d2c34376f75bbfdfa. 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/UKU932259761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec7f30eaa30751fe5284dda84ada3fa61dc470f25b2787c27e66c5a807b9f9f. 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/UKU932259762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465118c62b24eac601a8f9057523aa4cf5bfead82e55a196dff8535d83f88780. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKU932259767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2943f127965862d6a9cbff82923b59d4ab598c6e55874be402c80417d2009d1c. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/UKU932259769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d011bab30ba1a482c0d7313970353a8abd77bd58e6a187360105dd3a87ba71. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/UKU932255797.
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 0x41bb0cfa07528b604aa9a0f3f219a9867cd428b74118e94bffbe70131c1b4489. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/UKU932259764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97c29b507abb73f8d07f1965aad82602ede1eb0ccb049b0231d3927720e38a3. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/UKU932259765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc012ab087c4b0209f3c9a2d8423d4af5d48697bea73e271ec6570d52ff8863. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/UKU932259768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ee7115781eb7272bd7e9517be50d8d23bc934bcd038fc23af4d5d70068e209. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/UKU932259772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2345789d359ed6587b41360936d9b444509f6f91c66b29bec6922d211469eb01. 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/GXBNP2497457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a76ac0e19152cf24aee7b22d23731a3cf3e02339646ddb02dee834fa6f6c42b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:39Z), 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/GXBNP2594862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453325f8d58c717f313f0f93aa776c98104b59d49a76e30a8d1ce0746cf934f4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUA6Y2539432.