1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xd211cf0dd389229adee5bc91e7b54194d1c1ce03b4f1a42f81955a2f0b8d490e. 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/0c6eee44-80d7-4718-9cbd-3c58d931f51a.json and https://artists.proofprofile.net/proofs/artist/0c6eee44-80d7-4718-9cbd-3c58d931f51a.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 → block OTSBitcoinBlock must exist at that height 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 0xe02638ceb7670a368c79b7f69f91eb89ddd773f287725e35bf5304ff4a3aa33f. 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/CZA231700076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422ee8316880344b4405d9b62544786d21b3ac1570b10daa2121bf763201dc03. 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/CZA231600250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5982326092f4e016bae0edb52c05687e290763d01a124f047b883ac3bdc92ea7. 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/CZJ331303002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab465de9209f8044efc2dca5d6848a676424d730e5efe1c8a10770809e65f34d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CZA231600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bca08dc55d06dd28dd959d203730a10e4d27362d2381ba5fff9856e19ce7bd. 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/CZA231500072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf83d5a58b6422452e8c6998ff00d9bb43658ea194788ce022147c1040e8ffef. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CZA231800077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f08eb2ee2eaa2524d0c9e27dc2596daab7c19a20e68ac13ec55b9e3eb8e398. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CZA231301383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1324be290a64adad862c48ee68c221021f5b094f1facbb657a6bab88bad1b9. 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/CZA231800178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c07a178f06e461c1887cec207b68f35383b081b6e61073079f1d7f3841584e. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/CZA231900478.
Mám se tak fajn (feat. Sebastian & Kuba Ryba)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0badc9e03174b6639d8765ed873699a7cb8e3203a77ea9a040122fdf6fbb7b70. 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/CZA232000742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c07a178f06e461c1887cec207b68f35383b081b6e61073079f1d7f3841584e. 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/CZA231900478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa3833ab9b9f7d62ea7c48beb6b73b6061077e1e0897b2a89b06b1642a8d8c8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CZA232000423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d67ff98bf32579b8334b16b5b828acff63eded60c3d09963c77618f0225f7a3. 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/CZA232000593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2106afa28f0ee95ab53a72f7308bdb57769707d85cc41ea19f1f1aaf9aa623. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/CZA232000594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c70ac2857dec46d5ea9d1f18af96c505a502265a4387b81faa4f078968bf58. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/CZA232000595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48f35baec8289f8e975bbbe3084e69f8392bc46f511fc20b755abc2da41099b. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/CZA232000596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710b275236991aeb691e6e318799efe24f06850536607c951e385d131649dce4. 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/CZA232000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6f2bb7261ec314f234d755f9a49dbdca6520bca1ba7268ff056fc9e5cfb9fb. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/CZA232200837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7158de9305be3efa29c42af1ef18b8c101980d56f8104a828d2dd85b86510d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CZA232201219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca95794e4cc64f8d0c7ba5b3e59a1ad70a93a19951549bcc63709c535f2019c4. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/CZA232301349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112b5bac22d9847b745797784b04c572e5cf89c7ac9c2ebcd278739543cd62bd. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/CZCZ42400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2140413792e1a3b74b685411f5a7e87975e07e0310d9c8227c2e679b933442dd. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:22:26Z), 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/CZCZ42400139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c348e43107af99958b71afb04cd3599a32211e7ffd13df745ebfef0f5349194. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/CZCZ42400140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713dc985b1422b9b3818c4417487fb0bbcbe7c3492b5ad6ac9f220189f8c0921. 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/CZCZ42400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b79f4b879ebd081d705e87bf05ecd5e1549cd99d8450fadf43ba37a3774fb6b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:59:06Z), 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/CZCZ42400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa304d13992e275dadd81c5a54d30c568edffd3db1d775d115689190067a6e4e5. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:52:51Z), 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/CZCZ42400141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fed1d2a115f5d600bbb7ad9874f0e4660b6f36d8d63688c6d326651c9dca4fe. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CZCZ42400142.
V Tomto Svete (feat. Moja Reč & Jakub Děkan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bfb03b8375a978a8dfc5c5c7003b90b8431a38469a1471f186b4dd3b062cad. 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/TCACU1655428.