Hanka Paldum (born 28 April 1956) is a Bosnian sevdalinka singer and co-founder of the record label Sarajevo Disk. She is regarded as one of the best female sevdah performers of the 20th century and i
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 0xcc5dd62e6c84dff75ab066204e6fffb04e537317255463a3c99990065db40f13. 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/6648fb37-4cad-43d5-82f2-c6fedf6f0c5e.json and https://artists.proofprofile.net/proofs/artist/6648fb37-4cad-43d5-82f2-c6fedf6f0c5e.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 0xcfb685ac1bfa6ed69ee5c9210cb5f418c71702cc065a7938e9f96eac15eac076. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEKB71655864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4648723bd459e4411bb1928a4d76fa9510bee6fb4a2b4d79daedb36b186f322a. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/DEKB71655871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95080eaebc5b3c50dbc9cb68eb6e658ce2ea0b3f8650c7c7158096f5f2ee067. 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/DEKB71655873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d38641ad0b963a91c17f476fb36b62f3d79f7c26104705548f9a9ab053459a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USA560685256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bcb2046fcc6b14ffa271d2a9fd3a425d3ade6f5d06cc56e37ff71fea031ff7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BAA052230567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f7ab33f639f9b9f3d0ee9d2af4e9beef7d8edd7f50eeada83c173aedb2dafd. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/BAA052230574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9e2c70b96392801d25d854c5d84368638975d7eb98f81b61bcb38257be6a96. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/HRA040639071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ab156294ac790a902da37bfad463fa7a319e893b882798006b24d9ee836f51. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/HRA041266422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577aa78fdccb92de103a13f8892a6c8f78d6ad88274cf9531ed05378afba3c79. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/HRA041266423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bfc660dd53e8762d5a6d51308fe777218c745de072a51d5f57123bbce0b02f. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QM6MZ1478047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6318a4a4f4ae48a3513bd6e5fc31be34fee800d861cd59fba58325e193d2ee8. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QM6MZ1478049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e22b6a49797b0759d1fb2a19c5e2c8c51b95f21f364ea54e446c5ef858a8c9. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QM6MZ1478050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326483c1ca3e3321c64ccabf7302ac18cf1beeb8a284041ef1b3372d413b21ae. 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/QM6MZ1478052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285ffe913ed781cb255607014aa57b5b11fc0f78a067623a71f1d093d8f909ea. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QM6MZ1478058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919e422011097f9adc5e0439149ffb9371a3c470a1d4a2cb4a3943122db3e3ac. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QM6MZ1478059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae83e7a066643e7c17d22b0c862c25a39a190e437cbecf8aa533a1c5d98ab4c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BAA052230589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8b22fdf73a41811f66b04df09949c3fae43e840470be85105d12524287b483. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEKB72526164.