Emkej is a Slovenian rapper and founder of Wudisban Records from Maribor, Slovenia. He is also one of the most recognizable Slovenian hip hop figures and a member of hip hop group Tekochee Kru. Early
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 0x766196221cf25bd709948c4174c9f5db98b5434722c065cec5a2417c3dc0ee81. 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/34da1f29-36e1-48ee-9459-a5339b21447b.json and https://artists.proofprofile.net/proofs/artist/34da1f29-36e1-48ee-9459-a5339b21447b.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 0x1fa448a00cb203450f63079a0d16da650e68c7dbec7db31ae40058f8736d9720. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZES61808263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d2d7ba211eff68803cf3f540d0e39b7474cd1baf2b2bf24293445ad5be1cb0. 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/QZES61808265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a624992b1698c4713410db4d2aecef71054583c1c4333bd5c93b85cf95473a1. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QZES61809008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56d68dd8b92463d638c2a7ef20e1d928cca92eea77771190bb8f992d7d30c87. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZES61809009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0d01879192e633f31bb47d4b859f2858eb82be5d4e4158bb5354f56a5794da. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZES61809015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd920c90110152bd1b7e375e2429c8ca1a1ed1ec8ad294b5aad5ad043470e8546. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZES61811531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd12e0f1dc0ac79493a7717daaf7a93ee1e8871d8006c179f70fba256181f3f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZES61811536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e87f1d1029caaf5a22737299aa6c6b77177efca9efec4d35600c8286904e0c. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/QZES61811541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a027243b5212a2fb1da5ae47c282d6eac006ea42b266e251c5b7942e4c1f0d. 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/QZES61811542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f482968d574e65be8016aa8cb1828f7ab56ead279ba8ae4a93920c1f54d6a3c. 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/QZES71960244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38422bbfed5f9a3e5031d9c2f8b9622da571ba7c928104524882152f9666f64. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZFZ52161108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4287d398104a7722f63c8e3ef82c11acdc88743fb2b753b15058ddf3038239. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZDA82243580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59511aa3e5ad9bac866f297b50db0fac35e8505a453ff830c4b58f3d58a6bf37. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFS2475715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c50bbe9fd97c7d62a199a70badf4dbf7bef3a7f69cee79fb2772c4e155c2b9f. 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/QZHN82599182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e770988bf72b35029b1657ad9ac061a4becf0cd7fb1989af0faade626167e0. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZES61809012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4287d398104a7722f63c8e3ef82c11acdc88743fb2b753b15058ddf3038239. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZDA82243580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59511aa3e5ad9bac866f297b50db0fac35e8505a453ff830c4b58f3d58a6bf37. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZWFS2475715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c08bcb9076ece0f11d160c7b1751142bd26a6a4c8825980cb5f2dc4cc81bc42. 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/QT3F32588799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4081ce40eab92e948664cf61ad4ee95ebf541697a40d0f741f0ccd9ff99015fe. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZK6P2066739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96c315da0d001e9cf34c0538dfb2c93fde2747cdaff751c5e3f4168ec2d5ecf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZFZ61979387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a135c4aa7446ca6d67a915483170d9a186fa7dd3a9e568149468f8e5b7ff56. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZFYY2089357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c27a93455b7471961348f03acb6ed4652edd4335deabcf7f931122179e6ad2. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZFYY2089360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a54aa31982cf782f68343e00e0ad1f98f8c001125a2b1c4749d1d3ef89ed5b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM2PV1885390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d811163b844b91be7ced1f7bf0477d3666a765378aa856e7c679a661b987a7a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM2PV1885391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba6250e133d5a903882577ccd18f221f3000f9fa26714219ad30350bdb814b2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM2PV1885403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686675a3d107169adfecff4aeeabd1042d0496ad138c8fc492679ff211e95fe4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM2PV1885404.