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 0xd9bf1df77c3b07411636a240b26b1d3599183d2c12fa8b4a2b47b8aa610e272d. 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/e8e0b243-7949-4727-bf9d-fce97d875b23.json and https://artists.proofprofile.net/proofs/artist/e8e0b243-7949-4727-bf9d-fce97d875b23.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 0xc8684f07f0cba13f910ee147c6ecdf27e85bbf4a71b8fb60b9e498a8f4c4b8e6. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:13:34Z), 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/PLA550000159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860ee4cab2ba6db659b29e05b8cc267a4a073363775227a0c712aa330c8b93b1. 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/PLA550000163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28f5f2b5178800800f809057dc92a97ba8fb339b80eb82e7bff6161d7d505d7. 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/PLA550000164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9717a742ade5cafd0597d9d4ca806549096b2d30d6fc4655aac754a65be03c05. 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/PLA550000165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c27315c46439ee7fe51f5e2202b0eb4006a0a1410b6c0d608e04ae2b335dfb7. 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/PLA550000166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74d5eeb0defedd455ac2af502abdaaaf2e8fd45d30eb40cc06503a30c1e5eba. 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/PLA550000169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db410bab82336c33eb0108e30be7b83e97f0c747584222a35c54b02e6b38de8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLA550000170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90794f0ecabcbe3afb25f4163e03bbc54026ad0b64a20d3608013ff2eca24b6c. 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/PLA550000171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b0d1b98ca373094adb6309980e900a946f88fcb0e07061a824b1ac14719825. 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/PLA550000172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbf90cb4ab2293eae8e359bb9954478276a81c5eacfa4c8c29b2f5208a70d6d. 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/PLA552200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33003fb027753705a48dc17c9574295abbe2e67966c091a69f44185631adce3. 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/PLA550200114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b0c818fc12a8e09c04b05e071a07c6e9a6e827757d8f2dff406542214b2773. 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/PLA550200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3a2411a7072f11c682a9eff34c32025385f55511f80a65d7659916b75fdde3. 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/PLA550200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68a4b9389d63900b48e06316ce7920e6a76965af3b30c397223c236554a8262. 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/PLA550200124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aeda2fc6e9052688ecf6602e35705ab105e341cbb35df32c83f6ee44527c829. 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/PLA550200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c11917f9823abc59501c6f5381c1dda11de024ffca91fbb854435a0d78aa1c. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/PLA550200119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7208543fbd86d4a25700fa335bbdae18e7360fb982a02e3c23c0b2bc1b54a995. 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/PLA550200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf765ef08d3b404112fa8ae7a62ba3ef5b189f752879221380c97aef824c6b882. 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/PLA550200118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf14169a4d4b570d7a090570b08bd1f0993f57ef958986cd2462d0d10e3dc9e3. 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/PLA550200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392d0365eb74a1eaae3f48dca240b15e822f20afb73bb82a2cee5c53419e87aa. 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/PLA550200127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491486ff332de305ba3d4c1225c055c13b5be945f963136294f7e8278cfaf305. 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/PLA550300208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3099443f1af028c6bd3bad24d071d48a901fdc830c3bd43a037bdf7a96967ed4. 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/PLA550300220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda9083f7075dba14537fe0654ebe5e7dd160ff269390ab1d9ddbaff0b017ac3. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/PLA550300212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59b7b35d3620119ed871ea134dd748d36cfd8ee064871797b19a079f7ca3b6b. 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/PLA550700500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0e6caa94fa659b2ebd821f6e39b74df463118579c06040c265480b13499574. 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/PLA550700501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2b0684fad1270a48db7af6ed3e1e755214e528dc61628d0f9223ef816abda3. 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/PLA550700502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a7f133a332ec03cc5e5306474082040eeed09da48da0eb7ebd20de987f6b90. 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/PLA550700506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158c320d7389b1ca61239ec66876449bd0af05465f83319f804ebc7987039ca0. 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/PLA550700508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63558b4e02c5f9fe79c8e045c26ae1fbbf32be160ae42da3cae594135fbfebac. 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/PLA550700510.
Dobrze nas zapamiętaj (feat. Młody Łyskacz, DJ DEF)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550bd1c829fff6bdf91f1336ad16ff1dfa4c765983344f15e41bb5d043c4e1e3. 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/PLA552200790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e4ade62c5291983c5b381304c91da05f6ab4d7300124a0bda5e114e605696d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:47:02Z), 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/PLA552200798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550bd1c829fff6bdf91f1336ad16ff1dfa4c765983344f15e41bb5d043c4e1e3. 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/PLA552200790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a43588e8102345247cddf1c1ab68c32a98f4e607e0a1dde968cf125a319c97. 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/PLA552200791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683f9c451c3191603e5f06b10151d45ed427abec131b348773cadee88062cfb8. 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/PLA552200793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f3e38eab676b3bacc7042758d037906b2357df11d6848ff165617bec9125e1. 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/PLA552200795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c5bf1f07d27362a13fbbebf49d85a4e7afeef9319ee4edd0e8b5c78df18e97. 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/PLA552200797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657ea0566f78c0e0626d2c749d0d60622e16320341a45c08b8f817757655b5ed. 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/PLA552200800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24fb0d7c23e90afc0733dd5690ae6a1560b430295b5ca360a686240f7030031. 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/PLA552200663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8533202f94cbac95af5f09b64137e5ff0bb9cfe78925944cb497d66277fa90c8. 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/PL96J2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdd331584d81a67dba532394df7f4f8fc14e276acdfa7cbd35490ee23aca139. 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/PLL371400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891975adc76fe4a19f217d8ef18f50d6ae9218b1e9a673ffd78c5f350fc76e80. 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/PL63I2000011.