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 0x22f559e28aa768064352b05aceb43d1c239ccf76a33760df59c42bfdae2cfb6b. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6eeeae0-8c32-489a-8a3c-94e1a3c16446.json and https://artists.proofprofile.net/proofs/artist/b6eeeae0-8c32-489a-8a3c-94e1a3c16446.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kalejdoskop zdarzeń (feat. Nizioł, Marlena Patynko, 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 0x11b31c8ca971a0cab6b0065bd0e44a7da75db0f28c3575ba22cc3fd3c1872a30. 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/PLF241704583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a4562db77731fb4e639a0f2f66f8f415c05d2effcb884a898a2e31f12089b1. 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/PLF241704584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8b2b86d753e64bbc6f6947f7ccbac80ff424190c8d4588397bdd2d0fb66d70. 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/PLF241704586.
Wjechali na imprezę (feat. Guillotine Mack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44193642ab3fb0c74e6d5171d0a14f850ef4824b90a06566c44c7d5e8942a4c3. 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/PLF241704587.
Nie ma co się bać (feat. Daria Kwiatkowska)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc1fe7a774d4f4cea7ddaa5e3ed9fb294be1e2f2bfc768848a33bdb7abd28ae. 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/PLF241704589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aec1c0add752d14cf7923c89cac650ce406babf3b6f23cc7ae8dd5417162e89. 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/PLF241704592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ccfa4f0aba01f373086d5636c9052325912658c893d054d8a05a5469a53aa8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PLF241704593.
Życie z odzysku (feat. Vader, Guillotine Mack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19afd2dc5fe4ebbf4332fe49ff9e0f9e61e1d8f24796792cf5509c35688b03a4. 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/PLF241704596.
Opowieści z osiedla (feat. WHSP, DJ Gondek)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02182657c760e2ed1f0a1f9f66f977a21d64d8b67da9234c5e94114aaca25560. 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/PLF241704597.