Kontrust is an Austrian crossover band formed in 2001. The band is famous for wearing lederhosen and their lyrics are predominantly in English, though German and Polish language have also been incorpo
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 0xc83d3d42463c226e035794ba50ab62bd8a74d615edb9875d7791ee07258a19c8. 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/53ae32ad-7426-44ee-9e4e-6e372b34fb18.json and https://artists.proofprofile.net/proofs/artist/53ae32ad-7426-44ee-9e4e-6e372b34fb18.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 0xec54585e35e534fe9c5d816a31cf6c1d7e2f756903cae3499c703f3b091737b3. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:05:52Z), 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/QZK6F2306841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2a3e41d4c50f0390defb8fe862b623cdd069e5a3190b368e25592a42df5ebf. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHNA2387510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68c8d0e390d06c1c034fe7890cf28371098b475d2f37041180500bf19e6cc62. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZHNA2387511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43826054640260c7cde81037c61b9df2b2b0a025c52fbdd8ab70673fafc3517. 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/QZHNA2387512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946d111939ac841d350d86991453fcb1e01f1dc2968202e53a9e3995c97fc439. 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/QZHNA2387518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390cd49ac8695b8cc565254f4186ea784656e329202794db81f82866beee78da. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:01:36Z), 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/QZHNA2387519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f3157d41e718d4d2f47ccf2a57562cfebd53c2b568b59cb24713e2436f0976. 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/QZHNA2387521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6f580924902643728abd723931ba189282a8ba50ce9059f20e9accc947543f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZHNA2387522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe21809cc6d452c111622407aa4116853473fe0962e3399ab571e11d975c710. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZHNA2387525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4004104327578c20b6d43b0568f66059b6f36be7987bfcc3e5905553d9f30f2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:06:13Z), 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/QZTAW2308745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbf7410fba1656c101f8fd19e84dee9ffddab7338daf687f6002bc07703dcae. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZTAW2308746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1083eb22b793f6313f3fa7910867cf6cf4f9e3c2c32195c06c83fb087b8b340. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:44:30Z), 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/QZTAW2308747.
Second Hand Wonderland (2-Track Promo Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ac1ac5cc4b0dba89edccc41eebe4742900b0e35fc69e146ae2af18b2fdac24. 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/ATN261242204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05304f7d6f7114a18207de72af51fb814a9afade5be21f908021943ae60219ae. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ATN261242206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84507223f7c120185ad55bff03bf318cc5b71e8961ea5c11d018a1fc7fc66dd. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/ATN261242207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72589267e28b33bd54e923fc815753d58f427c1d7a3beb80df001c4e1597a5aa. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/ATN261242208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc8846ba946bb88f5b57a010aada48fb0d3d6e9e1accf0d153316d8fe861c8d. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:37:04Z), 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/ATN261242210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986c097348c43dab7de57614fb2740578a403ee56ea3ac1a1cb6392fa50d0205. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ATN261242212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f1b891f4dd127b2196958b3f179b8791bf4f66729c222f952a394ac51248d4. 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/ATN261242215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f1db4f90fa8171dd32e3d2000231bbbae25447bbebc7ea4da9fd94afccd2d4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ATN261457102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd60e5a04a32a0961f5b379322bb5cc25efcca84b6f17f03af1fa4f20542753. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:29:36Z), 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/ATN261457104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13df76c45b03f9febadcc5fa05e0ce6a0e944250262862867c29394e90fc15b4. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/ATN261457105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dea65d421796a2c88771f113b07b314a305934c37fe778a5e9d46fee5eef608. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/ATN261457106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fb795d9714b615fa72bbe906b8f545a79caaca64b38d574cd254625c002223. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ATN261457108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e6679befe4862bed67a71b899b10c86a4fcfac268b23fb17d43ce13f313f0f. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/ATN262321201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a697b2fbc64678a77fa2fabe01d937156f35aa8009a1b0f62d639c8b354c5e. 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/ATN262321202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24412c3b24ef5eda6b40a3c6858dc7716307e892fad8913871d598c4b3bc546a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/ATN262321203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c89ec9c9f47b1a3df627e31652a230d3a02b45e0115357d744ac47f20045da7. 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/ATN262321204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497fa532198039ecb719f8e31e4bf541caf5d452963bf9559a2c50dc7f26618f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ATN262321206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633011079c0664242b0d6af58cd2c84bd49ae908abaf593060b156c8cda527ef. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/ATN262321207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb92e64db384518bf21f0c8fd28bc223a1db992cf5a6e2ecd299b09581481d10. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ATN262321208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2c477f3cb6c1cefd8aaea53837adbc2bd6fdbe9475dd2f2100768d627f380d. 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/ATN262321209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabb0fb78e4a65d7191b99aa2dd4bece27664b509b6342bd613f9300314dd5df. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:32:28Z), 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/ATN262321210.