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 0x1432e26c616f8f7e3a3ca159163847cf9aade72cb5e486bc9383dc5dfc98df06. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/536c07d6-b955-4ecc-a7c8-bf0be6133c25.json and https://artists.proofprofile.net/proofs/artist/536c07d6-b955-4ecc-a7c8-bf0be6133c25.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 0xfba29100070dc6d2c4124db0d9bc1f817380aeda6f15dc56e9852c59e35ba878. 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/CZA759909802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6e954f1a287dd5f5ed6f0f15b152f5756610adb15f7fc8987cbc9b05d3451e. 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/CZA759909805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9af4d79bbc886af15444e685ac2b9071273622e45d15f320fe939cbf7255e8. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:47Z), 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/CZA759909809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5468de119018f6f00e8b2e3e72dd5b5184cd046478f3a3cc8a603cb1db08da. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/CZA759909811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e98210add17e0d8086e57470b9c9428be0355eb40a3b4e2013c7e578cd7ed85. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/CZA750528501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b88ce5f456479d738a1bd341b912dc409118e6797e081e9b532420b2a717ff1. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CZA750528502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33050e4e4a406312c95e718fe8e00a914b19eece0aed221a4fc6d98b9aaab5b. 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/CZA750528503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b5b3fc436963d3ee0bccbe12d30cb01e258b4fb7699453d6c67dcbaedd7ee8. 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/CZA750528504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a481aac46b7647fefefd7d7cc150ac2b4d06174eacbeabf514035e9515a654. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:27:18Z), 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/CZA750528505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a703059009736d6d8793153169b51283ac18656fa22ad5b0122d60527a0562. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:07:45Z), 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/CZA750528507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28416c1a0f9fd13bd176369475498a224033cc1128037854f6eaea529ab023f6. 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/CZA750528509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfff400ec5e8ad97fd2a7cd3a669ec309256d02c9d20f2380bfd2e9151e27f86. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CZA750528511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47592c3f4639167c6b2e08f2f2ad062c5d6fe2e69e4121a2a1b124f1c823ee76. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:15:47Z), 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/CZA750528512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab90336bdf532f5c24955f4d95579cb08044b2071af1605e79bf81348b09ec3b. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/CZA750528513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5347d50a26f4eb0d95dea50a5256276e81d6ffd467c7b16e43a894661214502. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/CZA750528515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423e7d4b315fe6bee19d262d4096961e2105c2bbd0aba1d1bf96751127fafff3. 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/CZA750528516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28b5eaa431f5b2ce3734279a429153153a1ec3f6f15a04b9bd74e92456cec6c. 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/CZA750528517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6631f81074dfe22df080b94a6d9795bac4259dade176cb6bc2ca06eade688fc6. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:12:04Z), 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/CZA750528518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a12b444b108e293c2b455007ed84ba9e0a02e63db2920cd21f661335fc08c4c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/CZA750528519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c3eb85d19607fb6c2646c7afb066730bf5ce34739f256c5869ba5e5db1c406. 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/CZA750528520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f2205bfd083d25eaa40de4ac1b07b61a3f79c26160cf2170c0489071acd699. 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/CZA750528522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736410e14caabd5f9d936f4a7f0891ed8a07c3e0aea3bf926fe790c54e7477e8. 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/CZA750528523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6453e712d5665551d8f95d006fc3d4cabd8c8e465d67f285026d1be988cc7e89. 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/CZA750528525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e57ec79223d8ab777eb173a7d560bd920f08318123e52f0787a5e450dd9d5d. 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/CZA750528526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe751bff8e15ff3dd1b0ba72090d2c4c931d56a2430bd98f2e224b367836c8c. 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/CZA750528530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2ed6e2b7df79afa476664d3a1495268261d98efdf004593095ef09bb6dfdb7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CZA750528534.
Chvění - Suita Diaogů (Trembling - The Suite Of Dialogues)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d64342e79e70679f75fbd9c8d68d943dff880db5d705db83754ad12743a60d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:38:59Z), 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/CZA750944701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51de515b9100dedf40fdc5ba6224214086aea85546b81d08c70ca7584df41c70. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CZA750944704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe10409916b9efe634d1bca286802e3e0777604a92cf3cf59ea415a6b433d044. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/CZA750944705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46546c232bfc2d8c498258adc8b84b100901ae4392a51e793db9475c0351fb90. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/CZA750944706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02906cce74bec05fa20c6ca7c9912516e7a3270b5bc776002cd12004e989b4b6. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:34:09Z), 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/CZA750944713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7baba15130a3d26d7d8fe9c4e8701f3760dbad52f02f2201031312caa7985a67. 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/CZA750944714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93e5512edc6e5f2b9d75761d4f2f885ed71bf9efcc1d42ede5649813f474b31. 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/CZA750944719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1f0e5a54437d0b36e18e89cc933c1abfae452bdd50e3ca69f699f43a5dec81. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/CZA750933344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6abf3efd8be5c0885542c8844d3b079a8688ce415fb18808d9ebde25e69265. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/CZA750933345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ed589b56a887c4da44203a4c3f55d1816328c29014b3177e592dfcdb46bdda. 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/CZA751454503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b8b8eab45c391d189cb81f9862d0bfddf05b014381a434925f7531064baa14. 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/CZA751454506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5af392f6553ea38964cb87c81baf7e446839f192ee202c9563353b28f528e0d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CZA751454509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edd6e9f3740eeed48277c92f02e0b568fbad1a423ee8601ca7f7f350cf3a79c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:25:32Z), 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/CZA751454512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e3e1243c1c8630c10383bb5f148d1c236146384676d4f28486702d6e8adf65. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:07:07Z), 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/CZA751758512.
Společný koncert 2. část - Jiří Pavlica & Hradišťan, Hana a Petr Ulrychovi & Javory Beat (Live)
Beyond the Mountains, Beyond the Woods...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022dc5d8d0882b18329d2a276e408566b32c6acbb5f1d4e10a19d7fbf41cf4c1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CZA169100618.