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 0x597d03c2e3e3949a71e6445d5d3b93f412c108231b9cdad49e5f27f2e1b48b4b. 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/02875885-3a98-4546-bb54-70121ee09700.json and https://artists.proofprofile.net/proofs/artist/02875885-3a98-4546-bb54-70121ee09700.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 0x9e203c7ad56a5b71b6952994e170c9fba4cf3241943734e65bebe6c3dd1de554. 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/PLD501700280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fecfe62f04cdb511363bc6b50b49b95071ad602cce732ddec2810a62e8bdbae. 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/PLD501700260.
Nie chcą nas (feat. Eripe, Bazi with Art)
W przód (feat. Delekta, Filipek, Uszer zDP, Penx, Matis with TMK Beatz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411291c3654bd8c254c603f266b4a1dbc05daf30c99e7bfc54c7c00291cd1f61. 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/PLI361806940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d267526170c7eba5773220a25c8dbfc2bec25f9ac2fb6b9b91061e3ffeb74c. 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/PLI361806910.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacc9baca45b00cafc67a679945c0137a1f56017dcb16669e11edc27214bd360. 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/PLI361806950.
Katiusza (feat. Bazi, Zygson) [with TMK Beatz]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb390aab023d7c62842910cbe6c6635047251cdc7d518edd2e6fc51f4b3451f1. 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/PLI361806970.
Nie będziemy kolegami (with NoTime and Eigus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6faabc3ae80f653b740d5d468fc7ff053aa281b5cf9726f51d6b82847df85255. 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/PLI361806980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383e90184f6ddedc150fbe06fecc2618eb3f90520a3ab2ed85b01922da177af3. 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/PLI361806930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdc5ebbeb95f947c099bd0aa8237123665f336ffd8c9b4644c97cfc449bcef5. 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/PLI361806990.
Diego Sanchez (feat. Kojot) [with TMK Beatz]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4e6e2fcf194a0125acc33cb00733f85962d47ea4c7dac83a3e6c4204dc02b8. 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/PLI361807000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef71c712d530c3331552343e098ecf26f1fecb1dff473286c35e50f17cf4820. 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/PLI361807010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9505e9f3b8bd5b10cae87b2f44a1b3b044f0696a7228269ebe834c55d5eb6326. 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/PLI361807020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f798ba231b2a49fcf35eb48852bec6f79b1f9bacab5a4c7dfe12bfecfcbc38e. 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/PLI361807030.
Tartakiada (feat. Quebonafide) [with Nastyk]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2e8afca2e0a8e2aa008c3d33e27a913e38a25efbc71ac6beb4210758e78f6e. 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/PLI361807040.
Czasem się zastanawiam (feat. Oxon, Revo) [with Mario Kontrargument]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7421bbc3e0d87619ec1a01fe1b1fe943c8a88b833d7de1a3efe8306c16b370. 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/PLI361807050.
Hajduszoboszlo (with Mario Kontrargument)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0998033d51d82770311cc065794cdf7c04b609ef77260cf4bdc2fea2e27ea1ec. 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/PLI361806900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fc75c1fb06700332bbda709fe21b65068e4f3905e0538f05634fee0ea080b6. 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/PLI361806920.
Liga sprawiedliwości (feat. Eripe, Zygson, Delekta, Kojot, Penx, Revo)
To tylko hajs (feat. Eripe, EsZet, Penx, Zygson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ddbef4d9e07e5c4e52632098d3520eb63dc186597e10166866f9855cfc068b. 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/PLI361801950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7a4269b8d15bb1426b2c2d7474c17e3e4abc02ca75f03c7ee9c59334f4be29. 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/PLF242514246.
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.
Punches & Punches (feat. Avens & Nastyk)
Zapomniałem (feat. Baran, Bazi, Demon, Repeat, Uszer zDP & Zygson)
Nie ogarniam (feat. Avens, Nastyk & Nuez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f8a9b9f77c4bdc5f852607d2161312ee6ca74c82aff164c4d805fe982cc663. 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/PLF242514481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50cec56cdf83a52c951b22c36a62a474aaec4d39b0cb4c45320ab9a72bfde04. 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/PLS901700055.
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.