Darko Rundek (born 30 January 1956) is a Croatian rock singer, songwriter, poet, and actor. His music career started in the early 1980s, as the frontman of the world music influenced rock band Haustor
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 0x9d54f3ee6e411a8cbf4d6c4b30f8e1c05a5119d0b2aaa0056dcfbab1c3333e45. 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/9f156bd6-6d2b-418a-afbf-dc2e7cb5f4a6.json and https://artists.proofprofile.net/proofs/artist/9f156bd6-6d2b-418a-afbf-dc2e7cb5f4a6.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 0xcb03e7b931ff42ce310a8f24e29fc6a1a82e9967d5e3f96ad815677ddf5abe4e. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/HRA110716601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe0c3bf038f13f4d2a4695df3908ea573f57af2c8cdf06b0bebaaf208aac77b. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/HRA110716602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b884eab59af9115f3987ec731e650dce259852020f84b8c2fc2f06e6d003e1. 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/HRA110716603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e100be87993c1ea50df534a5ae6e6c8e9f2b038856e54d7684256c9591b318. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/DEL120409402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900da598715b046393b3826052813a62ca895fce19474c8b31cf0edcc0c58ffb. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEL120409408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce8dac7abee4e38d74b0033678eedcfbfe3f23fb6f26dd16c54f8bc92b68ac8. 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/DEL120409409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568c3fafb10a9e7c04c8c1d7bbfc87667b9d7c7475c5f3994ff4158d76b25b4f. 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/DEL120409410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36006e6fbf56a0df0e8272e2bdb8ab4c9f98b8453d8d2478fa3d087ba4c65ef8. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/HRAA40600179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4161a077121f513bedc5d380d8477b9dca319f9be39c7261296b855eda150853. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/HRAA40600183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101012da5aa2ce35c5fb53695ea95e6a2206795cbbd853ce4b47295913b9bfd5. 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/HRAA40800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fad50b5833f242ff8cd1072e921c1d032e298d82ac149eeaea2c5c4457747b. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/HRA111742304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fe2b93a77d0a97bf670a818c125054418f3578f4f667c8c3461eeb90a49a1f. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/HRA111742307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33050e4578c9718b2bdf62d328f0fd37b553c64f3cdd915824c9760045400c41. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HRA111742308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c4082d8cb3ae986edacdb3b9f8867c8c5eb5a069a78daf2bd2434985dac714. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/HRA111742310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2dc58d29eed904ce0291d0f07ca7b1bb519ed960796fb6464e326699fdf866. 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/HRAA42200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629389de4ed5b8bf0347f34fa1559e01e47bd70a9fdd56a44e0bfa40be177ab0. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/HRAA42200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8098ce6d94d02941dad094c57702c567e3fafa6f87e73e31258e9175274fd1b4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HRAA42200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7acf07e953935240665b1bd5ee0d3bb98367bf86b05aad6e2da71a0f9b9988. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/HRAA42200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc1f08b6ee380ead8ebd0aa28f3fb68c09b7c181872ea2e3c30d8398000571d. 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/HRAA42200076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ea75e4d2edef8041087e10d80e20f5b4a65bea4ef91a079b5f78025d3feb7f. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/HRAA42200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169dddf423b1bde74a8284fde6608cf1673ec45d752c3b6fea1ded99bf93d0e0. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/HRA8B2300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31484dbf5bd4753839eb712a22ec6051cde70030c365af4a2051d11d9954c1d. 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/HRAA42400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d36ee905431de28c91a255dac1066d664494371f2ed0d04490fa94d212c65c. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/HRA040648043.