Dymna Sumish () is a Ukrainian musical band. Founded on 3 December 1998 in Chernihiv, the group plays a mix of hardcore, punk and psychedelic rock. Winners of the festivals «Chervona Ruta» (Ukraine),
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 0x7d1e67b42aaf615b55c5ec687b952ab3e5a00e175a22ae4aa0314d3d245e44b6. 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/2bb2f31d-fd93-47b5-ae4d-d8a37a601790.json and https://artists.proofprofile.net/proofs/artist/2bb2f31d-fd93-47b5-ae4d-d8a37a601790.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 0x51510aded25743252f2ae63ccb5dcf5fafce58dbc5bf979bc7cda03c603a6ba4. 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/DGA052350218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd756fb957c8094933f25ba51474fd1db69f89a76b92cc1a3b6fcd36ae6ac8042. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FRX762246645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2962df792e51dca6bd0bc622155c885ba518cb67ce0e0846fe6fcddb5c747a4f. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/FRX762246646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f98c312e86d5a02a20437097ad6b57d603dfc4705adf0006d9a4d6bb9db6f13. 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/FRX762246647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4c6e9be9b79c0ab088e5378eb9622106e0d80c5168f29106850b44e0d3119f. 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/FRX762246648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8572a2709eb4a159b3f236e473f224d5fc1f9d41889cbe0b97659ac8f4cac460. 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/FRX762246649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224a39540e0dedd24b5d2c5d96fea8150dbefd1e377da0c043a9228c644d12e9. 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/FRX762246650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3e18877354c072b33ec0e0d5cc05aab3a6c369e29f121887138bdbe138fbaf. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/FRX762246651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db20967263cfb1b82bfaa35f71094210dfb794eb330b07c07304c5422f663bb. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USHM91750001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f4fa7549d0cceacb713c0d3d0b627957467f5d95fc4bc3b9fba9fe16078b86. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USHM91750004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8bd750e988d8a7664f601e37cb59e54ad431db5d6cb283e15ce0448c31bc2b. 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/USHM91750005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6c8ea712784b4d96a50e1a0b56ecc4eec12d863593877f14b5ce7a38235ed0. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USHM91750007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f8cc049fe4fa84c0b31f3c3bedf6b02a01733f6cf25b8d9e658d90e35eebb3. 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/USHM91750009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaad6f4e17e6f5d09d4993fb63aaee2b4b07ce896da71b9975ca9163c2dc106d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM91750010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6509aecf11abc206f58af327974d79960515e634487fbb322b1349fec9e683. 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/USHM91750011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc6e0165dcf09a1670cfbaad8f0ea6ee6d55088d249c4ddf72cbd823d236b0c. 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/DGA082398633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6ce67349b20baf26a9b992b14174799851f8b037d220111c16f583e9172edc. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DGA0L2357162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25713acb2f2ade6cf8b6f3f3c1e8f30909f7cec488c39ec28b5cdc874a097493. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DGA0Q2373646.