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 0x566e669b5d4b83983309975305a4d76011d5fa2ba7add75f90cfc2410eb9d9df. 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/db244c53-ff55-4021-8480-fddf9f5104ea.json and https://artists.proofprofile.net/proofs/artist/db244c53-ff55-4021-8480-fddf9f5104ea.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 0xac6d64735536091b427680858ab4356565578357607977e4e0d5491417088af9. 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/PLO381503042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66626b97449585104fe865c382fe3b554e949dcdb40603f7b687f70c5de3e54. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/PLO382003279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f73b3c91ebcf8edbd34623ed58b9ae7bfa9e69301e9dc0af18357b1e9232ae. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:59:15Z), 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/PLO382003317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028c9eb3735dd355cf707800a23e1ca1a66d965d2dff1d677bbc9ec50a488c30. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/PLO382003378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf786dc436515035e30b970e855f59a4aa986cc51640c2bba3df4d1a74a61b91. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T05:39:52Z), 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/PLO382103431.
Od Jutra Będę Grzeczny (Dance 2 Disco Eurodance Remix)
Ona Dziś Nie Chciała (Dance 2 Disco Remix)
Ona Dziś Nie Chciała - Dance 2 Disco Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d534920f7b1bbfb621de576cdd3a1c6b6ce7786409ea5a19c0c91412efc49b. 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/PLO382200147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f4902fc8d844a344c73f6a20fb543dba9bf28fdbefd23769d0f40314bccd63. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/PLO382200129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366c47a1e25cfe734c26db521f158de246a5509ff8a71efb7d1eb9b33208ecdb. 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/PLR862300225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d996ee93f563020dfe9f7470cb8bc46f211fc7bd06cdc60008a077481522933. 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/PLR862400311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af9a199aa3dfa5630f4858ed39ff99ec139336ec109fd2546379dd7b583c66c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/PLR862400676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed4b706d1a4b10985fb43eb21f7bf403095d3f5968b92bc8ad232bf828bfec9. 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/PLR862400675.