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 0xf26c9a53fae2f635608e2eb4b8e1aabb9e2eaad52c61d8d1b9a0ffd96692b7cc. 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/274d4f6f-7252-4fc1-9d6b-901d87869f8d.json and https://artists.proofprofile.net/proofs/artist/274d4f6f-7252-4fc1-9d6b-901d87869f8d.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 0xdcc6c4fee9dd86b1ea97faf16866651cb3857f8d3821fc51ee5af8c53a42f015. 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/PLI361819030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec9c2af675785117b877adec4c9c1782c2a0affc0e2136895b419856e64182e. 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/PLI361819080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c66e6953a5b13a4bd59f5a683f709e08b8c1669e55927419c0502b32e151bc0. 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/PLI361819020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb729571337980151ac02dcbf722db74687af2dd18f726715b7e418ff06e671d5. 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/PLI361819110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e974f1d789bcdb8239de6248d9bd67268fa823b28a4bbaf944b96e9b1a9508. 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/PLI361819120.
Punches & Punches (feat. Avens) [with Nastyk]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d1437b2f01bc2c7f3e4ab8134f82b38359a182dfaf864ba42cb3e47db440d4. 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/PLI361819130.
Naga prawda (feat. Eripe) [with TMK Beatz]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391e7c161b5fbd818ddeaf1332950d0e481d4e20a7f4787a7fca027adb918229. 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/PLI361819140.
Ścisły umysł (feat. Kojot) [with Nastyk]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08504bc09c95ac7978995665c4a59e8ce784feaf3f83e72fe32db9bc33294c13. 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/PLI361819180.
Zapomniałem (feat. Bazi & Demon & Repeat & Uszer zDP & Zygson) [with Baran]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9291d163ee19561ba74268832b2c3a4230734ce2bf8ddc5c234e2d126c4e674. 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/PLI361819190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c816210a4f063f79ccf3f3138b32aa74d7cbae8112346a2be0bcfe0fc212a76. 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/PLI361819150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa6ee72a4b7e7a9c21ba652332ac92a64d9f9857bcb14efa98ca899448d7c84. 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/QZES81945761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38d29dcde73536e2b1c74374c00b5d05566484bf4131aab05985f2884d8729c. 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/QZES81945766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1a2d8db0ecacc80f2ed3e8d03603efa8100522e782b253e4606ead8ebc7745. 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/PLI361813040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b5a3a01e89ec73557ef081266d3e6bb1635fba51c99d18c5e7edc598c66c50. 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/PLI361813080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92ee2f59971c8a78dd8bb0d72f126688e1e878dd59720bd5f70adb230a98c10. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/PLI361813110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c96e1ce79b845e14158cf15d4a26ad1f05dd140a03a4cd02129c84605d6aa8. 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/QZES81947113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd2917b5a529e7268174544c7631d9a4c586999cbcfec4992d007f6778f33c5. 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/PLF241704943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac42cb50c5b13e4a0e5b39eee05428784e9d23fe3b09da90df9d1c25d2c3e496. 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/PLF241704951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32065beb84ce16f34a8a76a291a4ecabbe1cbe780b273b0c6268d0aff91cc514. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PLF241704788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cb666049b312ba4cef6689e5a44f05184ca1260b4a51d6a07aa8cdcd5c50d3. 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/PLF241704807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a143214a133672ea2d18144f2423e66a81dee1a58c0ea1516686fae046460e1. 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/PLF241704940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99be9f300989901e7297cbe06237ed12f25e7015e069c8b004b2abb6f21bd7e8. 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/QZFZ62216265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4088708ca4cdc166cd24da25ca8c23c876a40d30e2dc40e1f94834308324bc. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZFZ62216267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714ad7802b30a6e4bbe0330881b0aac1ecf415d2328d43e227dd26f57c9cf8b5. 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/QZFZ62216268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c03afef08e305ec0e0830b134ba604ec269ab754afe335fd4ffd619fc50233. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZFZ62216271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd750b10b7fc00af202104f18de23de07d593ad1048f8838eddf7508a3aeca1c. 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/PLB382400890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765a77b3c816d9b868d2a922a6829ca0ea8b6b3148ac20270a7f69dc34678ee6. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/PLB382400945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a6191caad827b9e6e6a476401092e006d6de388c21d23710ee1d60ded263f8. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/PLB382400969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe604148be272ead4d7afabd229ed0de9b43dce6282e84a650a5e629b85090aef. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/PLB382500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd750b10b7fc00af202104f18de23de07d593ad1048f8838eddf7508a3aeca1c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/PLB382400890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765a77b3c816d9b868d2a922a6829ca0ea8b6b3148ac20270a7f69dc34678ee6. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/PLB382400945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a6191caad827b9e6e6a476401092e006d6de388c21d23710ee1d60ded263f8. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/PLB382400969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe604148be272ead4d7afabd229ed0de9b43dce6282e84a650a5e629b85090aef. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/PLB382500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb67cf20b4ebd31b14e013fd3d27deb55c59d7e4a5fa00369c5f612dff818ccb. 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/PLB382500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b654107128e1777bc0e218434b521049a94cb16a4f8b640f645df8e0195185. 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/PLB382500124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9dc12472f30776ea08dcc8515b24696210dc573f934f604fb0d604bf70c1eb. 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/PLB382500125.
Wiń siebie (feat. Uszer zDP, Kiju, Penx) [with TMK Beatz]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679eba9cdee331a7fa1096bbb13a3a96251aefd9586ac02f8c92e6dbcea0f6c9. 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/PLI361806960.