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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd87713a2ec0f5ab45902c2ebc71b828a7bd22f853fbf98367a8e84b8d4227b. 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/52be0b11-fb9f-444e-a09b-e24d5c40ddef.json and https://artists.proofprofile.net/proofs/artist/52be0b11-fb9f-444e-a09b-e24d5c40ddef.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Na Koncercie w Dyskotece (FunkyStrike, Synek Remix)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21521dac76934016311c19c77777e284ce593993bdbd1064b28cc3d5a60eb331. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/PLO381500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ae57bea86ed100c40a253f5ccd96954ed3c35e3c877a77fa84bf46faf723ea. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/PLO381501278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349a627d5118fe1fd924226866cffd0878dec8d31fc94cc7fdeb282d7db90278. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/PLO381502610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb49a60e63d686ff73ab5f0599d0be0c00e39d90089995b2f68292fc250c586. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/PLO381502613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c5f8a5188d7c7872127bc71b91be35e2c4007ac43c6f0eaed3cdea114e621a. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/PLO381502618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24726b3580a7a2fa927e86054c0fb3fdd1c3865ce50306f496586a152ad2eb23. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/PLO381903200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27df94688c7c005b8fe2f2d052a024aab9307d919f14f7f03dec2950a2bd76ee. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/PLO382003369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bc76691f133b82d8e92463c39089d42a10870be51ddde872d7ff4dd0ce64f4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/PLO382103436.
Nas Nie Zatrzyma Nikt (CandyNoize Remix)
Zakochany Chłopak (CandyNoize Club Remix)
Nas nie Zatrzyma Nikt (Synek Club Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8716d9e3f24ebb81a8a8e51d03eaeffae91e3310c6b03f979bc6da5cdfaf8c3b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PLO382200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5417ee14c142034864d952d4427b4024423766ce6e8a84e18767829c0d7ff1. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/PLO382400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405880989af24ce8c1ff28aef70b0c5a0226d1a97b1ac377196dcd3c08cf8051. 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/PLO382500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eaec05e1d1ca76f1334f6f1bcd96d2c2875427cb6bd6c58889226d76f3f52a6. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/PLO382500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2851d0394c70dc8921e66ecf5a2f87931892cffc3b3f07986b813cca7362aed2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PLO382500039.