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 0xe7cd772625b2f87c98a3983307d9a0c5bd31bce09ae50cc55608724bb46c7762. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/601e24af-2f9e-4f70-a68f-09490aba8eca.json and https://artists.proofprofile.net/proofs/artist/601e24af-2f9e-4f70-a68f-09490aba8eca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nie Chce Się Wcale (Piosenka Szewczyka, Królewny i Króla)
Do Trzech Razy . . . II (Piosenka Królewny)
Bo Król To Król I (Piosenka Króla i Królewny)
Krowa Spod Mrągowa (Piosenka - Zagadka Smoka)
Bo Król To Król II (Piosenka Króla i Królewny)
I Tak Się Kończy Bajka (Piosenka Finałowa)
Równanie serca: Wieżyczka Katedry Notre-Dame
Zaprawdę, wierzcie mi (I) - z filmu „Herkules”
{"copyright_id":"0x6a7deda1ef89e5a37eba7031b13b21b559f38940ff3ac4b48febc42b78ed5733","isrc":"USWD10526108","name":"Zaprawdę, wierzcie mi (I) - z filmu „Herkules”","registered_at":"2026-06-05T11:55:30Z","spotify_id":"5m7Izyi7MhC14VvUfJGlPs","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7deda1ef89e5a37eba7031b13b21b559f38940ff3ac4b48febc42b78ed5733. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5m7Izyi7MhC14VvUfJGlPs.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5m7Izyi7MhC14VvUfJGlPs.
{"copyright_id":"0xff8e04db3f5c77a734bb674b877b9d105d25ff315b9178b6d928443ec27dc7e5","isrc":"PLB171800545","name":"Gwiazdo świeć, kolędo leć","registered_at":"2026-06-11T18:52:26Z","spotify_id":"1OaXvAShGwTg1wzmFca8L5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8e04db3f5c77a734bb674b877b9d105d25ff315b9178b6d928443ec27dc7e5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1OaXvAShGwTg1wzmFca8L5.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1OaXvAShGwTg1wzmFca8L5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7957d97e4ffc9b5145c3912f354fb20747cc64f7de42206f780c5cb384a1ecab. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1zmLaA1X5KwiUeKlspOIj9.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1zmLaA1X5KwiUeKlspOIj9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680dc415fdc77584c475c9054c522d04a095aaeb836402f280dc44e2cf8961e8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2sGL3Rda6aApCelohp0Bnb.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2sGL3Rda6aApCelohp0Bnb.
{"copyright_id":"0x5f8b720841077b51e7bf861baac8fd8ce24d5f7b482a0a50389bd9ecdf3bc7f5","isrc":"PLB171800551","name":"Przybieżeli do Betlejem","registered_at":"2026-06-19T17:54:21Z","spotify_id":"05vDJj6fH0hTZeAilo4Zx3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8b720841077b51e7bf861baac8fd8ce24d5f7b482a0a50389bd9ecdf3bc7f5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/05vDJj6fH0hTZeAilo4Zx3.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/05vDJj6fH0hTZeAilo4Zx3.
{"copyright_id":"0x0b9763aa36e7fd174505b3704c3822cac66fc7f33f702bcd42714686adeea5b8","isrc":"PLB171800556","name":"Do szopy hej pasterze","registered_at":"2026-06-21T10:51:13Z","spotify_id":"1iLhi8vO3ncdiqxa9ZzvXh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9763aa36e7fd174505b3704c3822cac66fc7f33f702bcd42714686adeea5b8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1iLhi8vO3ncdiqxa9ZzvXh.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1iLhi8vO3ncdiqxa9ZzvXh.