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 0x028ebd8a54022c7d326f2af2907a84d37590172c3b93759deda5cf4efac65ba1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a46d793-0e3f-4f33-9ddf-c73b891b6458.json and https://artists.proofprofile.net/proofs/artist/4a46d793-0e3f-4f33-9ddf-c73b891b6458.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rollercoaster (feat. Białas, Bonzo, Czerwin)
Parkour (feat. Bonzo, plus, Czerwin, Wowo)
Warszawski Walczyk (feat. Czerwin, Żaku PPS, Lewy BRD, DJ Gondek)
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 0xd5d4a5f48079bf3793cd9c79b71ff61e35e1b8207f7cff5612923906bb7be332. 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/PLF242007471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9352f061562ea2b9f4f17b876ea1bbb4834d18ac6622294ae2e533152a9c43. 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/PLF242007472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5900d33956b55c340a9edfd733ac805c79f434cd8ecb1b0dde0d21dbafc944e. 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/PLF242007473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f990644269a12d7288acce01d1d3b4824486dd1676b72042b478542466a7b77. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/PLF242007474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e937b34e3c565005f88e4eed9a2da907e091da14b93142aa46b7d769fee2b2e. 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/PLF242007475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15be68c994c0c548fe4348ae41e08c4e11556f6edfc6c7d110feefdcc94a0f52. 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/PLF242006935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f07cf4768635e89a6c40742d128a2c9762df60ea2dd32de1c84b36a577e445f. 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/PLF242007476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef3a3ae4d349ddfa040f04bd49b6780337e5a1457b3160e30ea086bd21c74a3. 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/PLF242007477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363268db6ca0bb519fef646f5e7a1cb1e0033cff924e6bc1a035539ec13f660a. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/PLF242007479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d3e365fcb6a9ccbd723e842740bb4524967d09dbb1c1bbd4b1e8318a2ffeab. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/PLF242007480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2faecf16b8d62e30c8d41353f8d702f6ab35263bafbfd48c6ad8d4967da36e. 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/PLF242007454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f49b54d6365037ac68909d0705c37b90d5b0b2d1b58ea83a8f6d7fe0e8ff64. 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/PLF242007481.
Real Talk (feat. Bonus RPK, Nizioł, Czerwin, DJ Gondek, Wowo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d76dce916f5e641ec9baca2e40b9e856a21f42ebcba857cf06d08be3e803dc3. 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/PLF242209812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bb7bdf606854f4612db35d0c50bda64a24c87c8907130246370cee12a3ef58. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/PLF242209989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bb7bdf606854f4612db35d0c50bda64a24c87c8907130246370cee12a3ef58. 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/PLF242209989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c89a1d24376e5f921a65de3f0c1e53ea4e054a836fa1ce6657e4f913580e14f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PLF242210146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d76dce916f5e641ec9baca2e40b9e856a21f42ebcba857cf06d08be3e803dc3. 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/PLF242209812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7124c697a564acc3eb01d718bb4329b76b2af4daa86fc599ad9e9e4bed7e62b. 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/PLF242209794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bb7bdf606854f4612db35d0c50bda64a24c87c8907130246370cee12a3ef58. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLF242209989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0640793859625f7b2f1cdf9a1e991d7cda5ad31e8e292cf680c18734b356e744. 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/PLF242210201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7033d0e7e12cec7eff7427117fc0822aa7f3934a728a1108235f27842a14e12. 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/PLF242210202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f49bc8a0d45bb95f6fa33fa9beac2efc143c2c9a10ab438c4e928ef53cbd81. 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/PLF242210203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6c92f356d7bcc2b92e8bc904bfcfa27994eab468061504f27117ffb1c02027. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLF242210204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b9227e891d07845e459c9cf4e257e8fc20be85d03ecf973d33c0c72fe4430a. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/PLF242210205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefdffa71c4377a403550ffd17f0ee6eac8bc04cb84e8c0917e3dfc18ade9229. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/PLF242210206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0aeeb5b2d7f5e83dc9918f91fda75baa296cbfba87c615110ae22b9803ed0d. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/PLF242210207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aedbd493ed9aa9685ee658276969e40daf17bc1205af0700798a9fb950c48a9. 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/PLF242210208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62a4f9b5bfcfdd6dd48408bffe879bbb7808b703987ba097315e4036294e60d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLF242210209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe477dc8fa0c14683b5e966ac93d998734386f334f8b2ba56e8fc95c3f3fa353d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLF242210210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9f26e7d7a6bbadd07caf8e7ca25b0d4ded92438f7eb24fa4141efed1f56bb2. 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/PLF242209764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd021b46095fad29483f0d6bd798e5f17b461765a7111c74221ce69e38e155967. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLF242209472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bb7bdf606854f4612db35d0c50bda64a24c87c8907130246370cee12a3ef58. 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/PLF242209989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe477dc8fa0c14683b5e966ac93d998734386f334f8b2ba56e8fc95c3f3fa353d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/PLF242210210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0610aa5c81baf45cb73deb371f9b92c03f4b39e93fcc0740434fd4d6dbed489d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLF242210211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e61d1d8881f609029ecfadd4c588052d944629070495f7ea455e7b4489ce75. 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/PLF242210212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a24bc1ebb4d06475e0264cf6c43501d91f06a041065e518b5a363e1dbe39d0d. 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/PLF242210213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bbc9525e4bebcd1d06e8240ef19b62c7cbcf32a08a980e589098223ee48d7a. 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/PLF242210214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0b8414146480c6287a3f269d8e10f92f3b8ad810dc46c1b3012744958c69df. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLF242210215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674f3fda361dbdbe5f8db789b4b15d58fb0d873451bc7b526ccfa4dda1099c20. 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/PLF242210216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4715888e82a42f9294ad64e85bc418989844298cc938d63d10023e77c24d2f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLF242210217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474e58696667f06b50e9205061ecb56bce6a4275a9aa259d9149dc7ebefc4454. 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/PLC062369345.