Lidija Percan (born 16 March 1938) is an Istrian Croatian singer. Although she sings both in Croatian and Italian, Percan rose to fame in Yugoslavia principally thanks to her songs in the Italian lang
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 0x44e01f93f9405fc2b3f806ab151ae094f074f9f67c5ef28e7c96561ce9ccc699. 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/f7ef7330-5068-448a-ad86-8cb8e3f955d5.json and https://artists.proofprofile.net/proofs/artist/f7ef7330-5068-448a-ad86-8cb8e3f955d5.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 0x66503b7adfd6814a78c197b43c1799179323cb0e6f73e3757974b1b5d2333e6e. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T22:52:09Z), 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/HRA040606211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295de6512c2a966e4412786c3a39b70a6ea97307f0070ad715220f6ab3338e51. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:16:00Z), 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/HRA040613073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba458b6f250a758be6686d9e9d6ff240b4e65fbcdd615b89f0fa4b9b015e4543. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/HRA040613069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ce24b1b2c7066043e61250c777915df707467ccff31e8aa436422b4a58c083. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/HRA040613077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7861a1b80e6796400052e7fa3c4df92bb76a108a4a9b4a881f0f7ae3e6d5f049. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:47:26Z), 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/HRA040613078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb390e5dbab2118c8eedde68ff5f94f7834c68d7942ba3b2f6bdf5edaf4c27d3. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/HRA048407550.