187 Strassenbande (German for "187 streetgang") is a German hip hop and urban music formation joining a great number of German rappers mostly based in Hamburg formed in 2006. It is made up of Gzuz, Bo
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 0x955158b618d9db96e15b04db0875f57ee01b2e5442152809a8b124481b01094f. 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/725e07d9-de08-43d3-b5dc-9a3457338602.json and https://artists.proofprofile.net/proofs/artist/725e07d9-de08-43d3-b5dc-9a3457338602.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 0x745e6001b0cdd9ef4e55cd924a32776d5577869e31cf7f22aca86cd3f4a35d63. 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/DETX91500631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebad70ca6149de0a84e384be509111e3cfdb3238033a83496d469a0344e2a031. 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/DEQ022117694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541daee5735138e9d1fd9c2997cc12d20aeb5ba8096bc149756878ac3994caab. 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/DECE72102340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc70a87463865ef1bea96a2102b053481b5b8098ba9824ef24c5c328f13604b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DECE72102338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745e6001b0cdd9ef4e55cd924a32776d5577869e31cf7f22aca86cd3f4a35d63. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DETX91500631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f8201612918c87620db4e437f553ef442134e8fcbf686d5d2e9ecf5727c790. 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/DETX91500630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08621374dec399c1c02ea162f290283d5284436f71d0967d1d2db7a9a0491426. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DETX91500644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e818ef592337b41966360b4cfc3572bbe64935d2e8269e0b3a83ea516f6a5b0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEVY82000584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e818ef592337b41966360b4cfc3572bbe64935d2e8269e0b3a83ea516f6a5b0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEVY82000584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be1e38f44f906c6131c9e07a9cb7719bfb215624756ab155486c50f8fc2189a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DECE72101760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb863a9801a394babddfd1ab284c035649f83b2a4953080d26678b55530a05f38. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEVY82000190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94a6405d90b7945b3bdc82b8094fa910bfe23b7926cfec0759ef28ffb28a33a. 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/DEVY82000193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7c99be792f7cb735b37e3e3448a5f6f88e2b4d2b4cc559155db0006c63c3ac. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DETX91500629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f8201612918c87620db4e437f553ef442134e8fcbf686d5d2e9ecf5727c790. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DETX91500630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745e6001b0cdd9ef4e55cd924a32776d5577869e31cf7f22aca86cd3f4a35d63. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DETX91500631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c483a1dff7809bfc3fdbe54afb8753d4195b8a0925282bf47b97b6c356d2ef2. 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/DETX91500632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49988b7f246b59494b7ffbd0fe1787528599934c3f47326467ff51364577302. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DETX91500633.