thumb|Portrait of Maja Milinković Maja Milinković (; born 21 April 1981) is a Bosnian fado singer and songwriter, born in Sarajevo, the capital of SR Bosnia and Herzegovina (formerly a part of SFR Yu
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 0xc49cfd3f629ddad0e4136fa24b5904b486a75006455e053cf10bf170fcfc9ee7. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/926bf194-4d2c-4eb3-9eda-fba6352e2c7d.json and https://artists.proofprofile.net/proofs/artist/926bf194-4d2c-4eb3-9eda-fba6352e2c7d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Maja Milinković Romansa - uspavanka za dušu
Maja Milinkovic - Não Há Fado Sem Saudade
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 0x069e1f35f26f8c301728d7c2bc0139c8d079f692acedadaec1f3223e01948aae. 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/HRA042199665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028214046aab0318cd269e8419b1d660cf90d30a325228970ffac403eeaf91cf. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/HRA042201035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2012f60dc2757c5bf3dfbfd416ef0907c9185daf135f9dddb6f6331cfea40f. 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/HRA042300921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe12f103644112b1aa7f0d1e749ad2cba77e3690710203eb0ee65e3812f38976. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:08:05Z), 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/QZPLR2550397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d49520accbe5387f324740fa6e34f127feafd7d6c16391a8cc6bad598faafc. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:29:02Z), 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/HRA042501545.