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 0x90324f69663918a4a122fccdef94b4de1dcc466668a2d9d4163f93499cda6d27. 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/de803485-ccee-473e-a59d-e9883d5fd721.json and https://artists.proofprofile.net/proofs/artist/de803485-ccee-473e-a59d-e9883d5fd721.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 0xca353b8346c41eb82a35fae90be9c5f5aa8be051ef16eea9cac6c7b6a1498857. 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/CZA231200597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83e923ed773db3bcc8892d4a06b5512f1a9b9b84d0f94aa96a888a76d5433b4. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CZA230000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93a6aa1ce929e0049191dc11c884bfbb77e225d4aa3392c602af86f138a14d4. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:27:52Z), 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/CZA161001944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad78805e41a08b401d0cac430fb7cc54b229072a11e94199e844548f46274f07. 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/CZA163359587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e6edafcf32abafb844de1d596c8f4c7d23ee2c42789e8557d3b1113e20d2ed. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CZA239400264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b644986561f5398534d42dbe9094ab9950b256435e2deccaf1bc4b770dc26a4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CZA239400265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3cb95d5336fb442ec6aa79a3c6fc542251f49e69418954f961082fcf0c376c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CZA239400267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e26fe4fb0a59e7adec29446a178a052af7626722cabb411a55b1532a070a2f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CZA239400268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24be5b84e7dcff23d4b1e0c23fd5b18034c1eeb2bcb92d9093e5118e9ae74a0d. 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/CZA239400270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abebafc3f165446e62779c4e6c8fa5aeb97b39bbe9e0d7d99a4e6ea05cef6e3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CZA239400272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea13ceb0467ced6ebcf16bae4d274192ec588365b7e839a917c322b900c08144. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CZA239400273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ac1880b707835fedcbb0aba52c3d34794c7363b7eea2159f7ca02fc28ba85e. 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/CZA239400274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c08ede2d6a34e4805cf041703303e0554bd765dc0f037af8f43a4c683034786. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CZA239400276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a34f66e6a05c3faadf20dd593d383f755e360f72002d23adbb143f2bf02e3a5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CZA140300348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc88f31572327aea29137dbbc24b4d2782645f8e7a8b5b038608a495a7860ca. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/CZD711100031.
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
Nejvýznamnější skladatelé české populární hudby Ondřej Soukup 3 (1990-2019)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f1779005ddd3d757b988880c05688d405c15da89fccdc9caf21c61400d4d52. 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/CZA162100350.
Romeo & Julie (originální soundtrack muzikálu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bafcfbb771e1f29639698b9e2b009c2c4e2676ced1cc5d0471113fe82d8482. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZWFQ2300689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836a1173e5405171f0dfed6ac8b22c60d73dec073fe7eb84f5cf2fb3c17508a3. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZWFQ2300690.