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 0x623bb0b9ff01a0a2ec8800e845f361ec1a6ff66a95fa856af2a755305737d910. 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/464d3154-ff45-4f5d-9e82-034360100e34.json and https://artists.proofprofile.net/proofs/artist/464d3154-ff45-4f5d-9e82-034360100e34.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 0x60d9ceb110b3a3e2fa411067f154b6c90ae224780e5c52ab0de5512c0214da63. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:13:49Z), 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/PLA811500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c7f98f0b6bffde04e5978681430b14337f0da614dd0c0f8b0292fdfbe6fdd8. 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/PLA811500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fec6795204850294da36acd9bed201b01007ef3c15324ec8b035f4dc949e3e0. 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/PLA811500177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1467d08d6869ad34aff499e018fc21dfb4cf2831c94a0d331436fbfb03a591. 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/PLK681800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f80241a9baab450ce83c431f5278cb31d4328aebfac18b2820b6a82eb7c8d18. 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/PLK681800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f810ecbac308cd456a4cde3aeb8eb7ef9d55caf445849411cfca25c5abe2429. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/PLK681900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9256b7ca96c6813dd110875a4fca7d1ee4dcd0861c0c8317c89e1bff15ca502. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:34:27Z), 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/PLK681900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82739c12ee270120a4654e09e016f916207a18aa837536174caae03530209955. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:18:47Z), 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/PLK681900005.
Byłaś serca biciem (Storytel słuchowisko)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33fd9a6c4b7cd95f3427c5941f2334973e9a04311901ea87b1e6f38fa63dd8e. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/PLK682000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4c9b130de369fb425447170fbc7a19d7525d56a2fc372fe2f53541aa66b93e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/PLK682100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc0fc0ac3eb49a54cd238b7f62d3ad62cb517a349bab81ec4611bec7a1089fa. 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/PLK682100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00792f6a056eba67d44e34a2582b5d0dfe240c93fa088d75417704782bc5cbcb. 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/PLK682100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace51636698c73f790b21e0583ed07240b353349ca250131b8c78a7199e4ea8e. 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/PLK682100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22440c5b923a273524b0b2616a2d713e86525b9ecc061a745d87010fd86b5079. 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/PLK682100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba94d5138e82448a8f253ef8fc362328fd041f6dcde2b99c3bc07b42ba4c40b. 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/PLK682200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18559ac4189989e718db9bcf60d8d17fccd26bd9bfdbca0d9a7a391b28823e3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/PLB382200307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef1c7a6badfe11c3db79c883ba0175a43254f748bba72c0c54c83aacd3e7e63. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/PLK682200121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74f9450d9e00cd9328680786ddf459bdb17dbdbc093a92fafeb501bfd622b93. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:10:03Z), 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/PLK682200125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32dccce10fcafcf072735266a27b626101d85c91dea2267f6820cb2e674fe833. 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/PLK682200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c253eb7a8bbbfbadad19a884949dc2e3e2c84d1734c8b437e10503a866839a2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:15:15Z), 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/PLK682200129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d0f54125da9561b5bd2c35ff25bf3df8f3e2dd9e083d891d090b2f25487926. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/PLK682200130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66726aa2b02755d024ba58d54740578828a89f690cbf2b82458b923646ebfc1d. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:58:32Z), 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/PLK682200131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452a6072f005ddf317764fdb05b55cf9d9d11f4df1366896b0344bb2661c92be. 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/PLA812300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b71223483978668c4ce2937fac6891801f1a7fce0dbb70170daa79f0a89b75. 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/PLB822400225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479993340b16643181b0f7cbd9a799a869a43da5505a94bc99dcf7ff8a2dec45. 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/PLB822300235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79c9c08a354202261c08f5dc4a4cfb18f14cb2f21c5e5aa8f051b9743ff2aa7. 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/PLB822300242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f67947e99bb67005c92786a756a554eab0eefa6896506bca3b383ca589bf42. 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/PLUM72400486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa82f52387c2a228fd0b1a129a53aaa592e8e06d1c8e2b8ef755797b83c9d95. 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/PLL582100013.
Pieśni Współczesne (live at Cavatina Hall)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e0d8dc9dc93e9fc6bb46a3dc95ce3e439b9d4f060d2b33d58503e0aad77135. 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/PLL582200012.