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 0x6743e1d62dae763553bf0230b179117694ed6c544092ffbe759aae5fc79fe8e6. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ecc55e10-3de9-4cd6-a20b-a782cd14b338.json and https://artists.proofprofile.net/proofs/artist/ecc55e10-3de9-4cd6-a20b-a782cd14b338.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 0xab5e138da83e2f784226e7cb2d9f4cd8534a4f5c3b5d905719fa5a04d80caf55. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZRP42328218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b824dbf373ab77081b28fb4bb235f3cbd74ccad095af16df213e7433cdda28e. 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/QZTB22392965.
Paradnica Samuel Carny (Jaroslava Farkasova)
Misko Pazica (Bratu Mily vlastna tvorba)
DJ FRESH & Ox Proncessz všetci Ludia Hore
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e19dfbcc523aede31b2a5604fa66d038f8b59bbc6d9250355785dfcfb73bd7a. 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/QZMER2485041.
Mix (Disko / Cardas Milan Boris Riso Adrian)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df0ef8dd946a8e6b9016c1d566253bcdedd6647bc15bd7a08368d97f57d33d0. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:51:52Z), 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/QZTAZ2458966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1362a96f045fbf4b759e7fbbf77cda028534b629d66a1cd9bfc4d6c9645b3925. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:49:42Z), 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/QZWFE2405992.
Marek mekenzi (Marek Rostas Me la Kamav)
Samuel Carny & Viktor Toth (Vesela Novina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fce8603999b490d817df92d4857040f480da66f2218261ddf5f3f956be25b8. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZES52577793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8516dfc7e0c2779d910c5023013bceb12a4f2c17a69e208a5085d2a551c2997. 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/QZHN42593576.
Nikolas Murgac (Ki Volt itt & Avla romni)
Bubik Records & Gipsy Popik (Sar me dikav)
Marek / Slovak / Mekenzi (Cintorinske Brany)