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 0x469745abb5ca74f8f0fa5e09719017a8c8434a2516e84593f965afb476ef512b. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cdfc81a0-4dea-410b-b9bd-9a063514d15b.json and https://artists.proofprofile.net/proofs/artist/cdfc81a0-4dea-410b-b9bd-9a063514d15b.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 0x857917d585c1bfbe9280c69bea0d1289b35a492b2bb81ee6ea7edcb0d7622ac4. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/GBKQU1464202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b4dd77d447475e9156dc79485140b4698be27e33ee075ec917310b99804b41. 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/GBKQU1582933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd978e11820bbde49f1792df6648677abdf91e87435372f0c0c3634c879a465. 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/QZ5FN1884047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b44039a077956d60e133a14104f0fb40bddc7c87e23338c1635d83224e61bc9. 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/GBKQU1881284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24a54659b2070dab982546ff3085cf87c7ec52d8498bde73e342b495bd89e16. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:00:18Z), 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/QZ5FN1900512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea4cf2c1b33aee942e9326bd7498cf2973749ee5ae322da8de9aaf8aea35baa. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/QZ5FN1900519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c3d38bfee2d0c3e51ca12e3b912b2beb985a143a240ae75004652c8f13c229. 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/QZ5FN1900520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bd469a0ac718734d057ff5ccc8023fb029bb093490f22c565dfc3f1523e1da. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:50:30Z), 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/QZ5FN1900525.
Bánat Utca (feat. Feeling Music) - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d09342343da5bab7b8794320c6286feae0a30e5f5b5cb072444315cd60a736. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZ5FN1900532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9d1a3f2024c278c70e169f9fdff8e574defab261e48d79ef70a43382501a42. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZ5FN1900533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054e04744553ba7595d3757646a2d4d97b2d168f581e5a0fe7b06dfcf733409e. 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/GBLV62415142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1823b1e642be153dcb5b71cd95cdefe369d079fa50301b4312410e38bc973d. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:05:43Z), 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/GBKQU2543693.