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 0x0ce9bfa0c2ee87af7c7c12580f24150ab52b1cf7d1e18514f75ba65d8adbb3b2. 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/a0f39f2a-2cfc-49f8-bfc8-26edfa535877.json and https://artists.proofprofile.net/proofs/artist/a0f39f2a-2cfc-49f8-bfc8-26edfa535877.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 0x4ae6e0dd90729293e9dfbc0d54dae4ebfb62ad70b4700b45e959e032d461e239. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/SEYOK1528563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40cd39108d307dc6a3c69161cb725f0ca0fb07246738559d3fbbd41bdb88e53. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/PLW942100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c09afd226caf2be6bb2debb185f94533114f901c5ee4657888b5d7fd9b660b5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLW942100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb517895cd8cc703363445562d0df0530449a18dbeca6a27aa8550f774f1684. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/PLW942100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51e7833d8badd30d0bec659e99e25e9d4ffeb176b0d90ec66a5be747a55c338. 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/PLW942100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad29ccc8675b82fbc17cd7bc96e900e2162e4766ee13c52385307538aaffab5e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:25:13Z), 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/PLW942100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a1e8bfc0d76fd3ecda66bf3437e64365c94e2a490ceb121e13c0bcdbad91c1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PLW942100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef0009af56088347a49e1d11145f46283064084614d90f8a33dc18a0c5ee6f6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/PLW942200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1202b846f053f965d223eba1d6c6162994df7364f9902e9f093c41b2be5c1a67. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PLW942200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065e811a1913e4e7417d9700da975e0dbd2ed10783d099a52e4d6e900a5cf7d2. 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/PLW942200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5315f5ec96a3967106856c965d3febec60ba94740d43f51985af84ec9450d244. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/PLW942200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1453ba3ef77bbd15365f788f87d7400535a6f760b2acd390c97d9c0885a87150. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/PLW942200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8803aafe84177363dd7978c4afcc85e71b324bb9b9e8ad3d1e0f0c7d9562f2fb. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN32317709.
Noc W Czerwonym Mieście (Live) [Radio Edit]
Noc W Czerwonym Mieście (Live [Radio Edit])
Zgniły Polski Rock'n'roll [Radio Edit (Live)]
Zgniły Polski Rock'n'roll (Radio Edit) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a76cf253c39ef913e4db228d6ab12ebfa37fc3e602222d8781dae3aca343b0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PLW942400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845ac9ce8b19a43e6443c3b018a2a28b668f149af48b194ca8350b6c2b3c6274. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/PLW942400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7b651d0e32881d1e4fd6800d7fed67b0f2b75c4ee4a429098f89d2e7d4b524. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/PLW942400005.
Analogowy Gość W Cyfrowym Świecie (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e47eadbf3521b50cd77bf7629d75518261ae8c4f05ac4b4c55fd2ca793a9f90. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:53:54Z), 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/PLW942400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fab7bd74c3b743f870303ffe79c0cad7889c75f34d2479a5e0881217d8e6ccc. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/PLW942400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a6a37cc67d396177c70eeb7196f5995b47520b17a23b4a6c1de98f958bbcda. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/PLW942400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ea92acc755129db5cbd5e97520c1371e28244023666f974ef33a7c749a4c68. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PLW942400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1f39ee06271f932094cd75fe5b5f7ac1b57512a2398e2abf7605f3df03f1f3. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/PLW942400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9c1ccc5a4d0efa40d8f6c3752af403846b4a4ce8a512e249a43c6a5b97b846. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:28:05Z), 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/PLW942400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc93d4a3d4344ceb6164184e7c594f38af6478ead788728e15012260419a8250. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PLW942400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cae2daec0967eff79754a57d885b7f03aa3191589c38d0f89afad8ffbff687a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PLW942400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221e97ca3da3fe54480cc7c2b600597f883186d17d66f0f50b8f88070d3fc3d5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/PLW942400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad25550387cb9cc140890f8fa77855fe3f1f894ddccb6981a2d255b1810df49e. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/PLW942400018.