1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf5d391cf44dbc6453d3be8bdfb597a67c30213cd9d1d6a482a8af2d8df322d23. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1116687d-1c81-421c-ada0-52b5affd5a81.json and https://artists.proofprofile.net/proofs/artist/1116687d-1c81-421c-ada0-52b5affd5a81.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hungarian Retro Music / Karády Katalin, Volume 1
Hungarian Retro Music / Karády Katalin, Volume 2
Hungarian Retro Music / Karády Katalin, Volume 3
Ha már kihül a sziv (Quand L' amour Meurt)
Hungarian Retro Music / Karády Katalin, Volume 4
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 → block OTSBitcoinBlock must exist at that height 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 0xea687c783b3fa1b4e3efe1f9880396399eab14a1ecc4aac0c28c797fff53396f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:41:38Z), 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/GRHR11287409.
Karady Katalin - Kivul a kaszarnyan (Lili Marlen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8c86e4c7cba70c4366d3cf79d51134de9430d6f4c4258db7421d0cd78534d9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GRHR11287419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9be2ff0338310eae69f0e09cc00c458c6f92f7852d442e78d3e2f76337b37f8. 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/HUC301500272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa7cde3502e2be8f524a77ae7faaef1e9b320e2f9f306f2b3f867930c3f26e9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/HUC301500273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5043481df034356002f754ae9a109dddf0e0fa878e8ae6778e389fe94ac576d6. 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/HUC301500277.
Ne kérdezd, ki voltam (Válogatás Karády Katalin legnépszerűbb slágereiből)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea013a6a8d32b53153b1d50f342393bf500ab7ad81b18dd076286e54e899530. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/HUB951379005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e91c529098be01419a8f28e94fa250fe16eef3c7f3c73e32f789d62685f69a1. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/HUB951379009.
Nosztalgiázzunk Együtt, Vol. 11 (Édes Kisfiam)
Nosztalgiázzunk Együtt, Vol. 9 (Hull Az Elsárgult Levél)
Nosztalgiázzunk Együtt, Vol. 1 (Zene Nélkül Mit Érek Én)
Nosztalgiázzunk Együtt, Vol. 15 (Kicsit Szomorkás A Hangulatom Máma)
Nosztalgiázzunk Együtt, Vol. 6 (Múlnak A Gyermekévek)
Nosztalgiázzunk Együtt, Vol. 4 (Gedeon Bácsi)