RotFront (often prefixed with: "Emigrantski Raggamuffin Kollektiv") is a world music band from Berlin. History The group was founded in 2003 as Emigrantski Raggamuffin Kollektiv RotFront by Ukrai
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 0x41fc137cb756299327e658ea5b061fd9e7674f2388dae9129444c041de27c4d2. 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/2edceec6-9ae6-4396-ae01-2e2a7ac71ac3.json and https://artists.proofprofile.net/proofs/artist/2edceec6-9ae6-4396-ae01-2e2a7ac71ac3.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 0x4cce823a88eb9518c18fe00d3432cf85cedba46ad34b2a2506ec3967debfe3ab. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEAZ20900312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942874c0344b01b6c3e35cf42e6545736ad72a10c36745b0449beb27ecbd4eaf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEAZ20900313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1255f7fee3f69952b03363537eeaf9b41fcdc48c9f570462b4139984b344f1. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/DEAZ20900315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdaa53e0719779b9ef4ea3e6f6a66bcd9787d0e982043db445500d0239f6cb6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEAZ20900317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132bb6acae4638839312f89dd38d593dbf32880247f8031ee70e81e3b68aa1ad. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEAZ20900318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac210f05e47faa6851b46dca64b67fbaa4a6b49b2d613594d9002fd11acdb8b. 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/DEAZ20900319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b65dbd835f717dcd468fb5b7eb25b8a9d8c769c481f560f63f96620a6e02e85. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEAZ20900321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf5f4872135b8bfe1043e540ae6c564629ac785172666e1a60530dc91cfb724. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/DEAZ20900325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12025ebcfff553266daca1c58ab2b1c762158d39df1d866039f5779c0753c6b9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEAZ21100542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbcf3a626565f164ff6aaaa112afe6fdbaab27b908fbe6cad5f98296e7fa044. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEAZ21100543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41117640bec439e1f63d67ef2237e91c8d61f701c0d57435fac2b1a92ec047fb. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/DEAZ21100544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc31f183781c28a6dac2347836f6498f20b79d1eb628fb0225a6a9bf3e3465c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEAZ21100545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f3c3247f4ecb1f8a2f95f5fd73ba1324cdabb31c148dcafb7899cd989ff858. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEAZ21100547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803b4c863e33f9ecf3acc1dd2fe98136f0173bf2080b5cea79e9d699e21c94e3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEAZ21100548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b12b0a103c62028c37863d7f00a6a282134e202b9197205a04a43258506a64. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DEAZ21100550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ee81e242e781f7974de9f4b46bb0a078793b86f43f22c9fc7aa0f585fdcf1d. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DEAZ21100551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0414a8b9251cbf67e825f2bc9935084dfc5c8a0c40070e3bbf51bbd2003a6e2b. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DEAZ21100554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c9dfb794a150510213376f5a07280e468f7a9c591528b52c5af29e92fc196a. 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/DEQM61300805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91dd986cf926d21e3b4fef868e4e843c72a676c72b69613f2366ea68edea914b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEQM61300806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafb4d01701959c7ea9308bf078af0361a59fb5a534987c269aa4893567445fb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEQM61300807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f67f09cc4220dc8e99eca5dde8350464ca6c6ba94858e3fa0a7142db9b8c02. 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/DEQM61300808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a68ea78b36a76ba2762149544d7e5545b6411347833a64d4603c788bd7f233f. 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/DEQM61300809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7693fbd2da25e9f273a7b1419721b67cdbb983b590ddcfdc1fba4e2b74d237f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEQM61300811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb96ccc15e7890d6e895c6ac6189a0d34bc0791b665d9cb20c767ae6fcc793b1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEQM61300812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386750814a9a13c6e2da0b26e7e7b0cfa78bb6260e53f6cefbf83e383bea45d7. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEQM61300813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1345f7b98c61ca17e51788e78c34c6a4ab44c18de869406d6c42897b32d713d4. 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/DEQM61300814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e0b8f2878864ae2a0b096dcd8a96cda7384c0fe352418c0b6deb05a81cc66b. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/DEQM61300815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d45025b95a61e756b75c5bde362fc3fa169e4a20a7639731fc93cc5e2998e31. 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/DEQM61300816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bb583961b13ae6d38d3ae94f84047b9b4cf2e78803d90769289f3e2c34f9a6. 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/DEQM61300817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2d00846f0ec2f09fc23e9c77f779a049653a3272b059b3b81a10bbd2223373. 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/DEQM61300818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7330cb6c4997f55bf433148ba85665c7860dabbbb5fc9c2a3edbb10843f0e4eb. 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/DEQM61300819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369ffa465b7d5ba020ec905c4f60c17d93b550eb0c40c475375771bb6ea1c3e6. 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/DEQM61300820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df9ff3fd2ba2391c4fdbb8776e6fb8be74a445aa25e05ef4df1bc92afeee3b1. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/DEQM61300821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cb9bd44920266e41d43f59e71182f9435b0c2323c173b446152fe7cb0bd79a. 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/DEEQ71404304.