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 0xaafd45ac80425efc1d9d78efffec9b550ed09b3266075c9623cadd1a7b972421. 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/9504a949-1bb4-4a38-9a29-9e25169bd9be.json and https://artists.proofprofile.net/proofs/artist/9504a949-1bb4-4a38-9a29-9e25169bd9be.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 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 0x702918ce98eb9659c1e0a8d19789108ac7d25257a536ba7c8eb3ffaa11f21f50. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZBN532400023.
Khuthuzile (feat. DJ Maphorisa, Pushkin & Kabelo Sings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe606ebf4019da3aa3fe59bac848fb9e723303244952b27281c0cfff2c46e10c4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZBN532400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6537b29e9fcde03d11de48c6ed21863bb5726f73514bcb745925e645f1f95f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZBN532400025.
Kwaze kwa mnandi (feat. DJ Maphorisa, CowBoii & Al Xapo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c310cac4da7e921422f10c0ce175345d03c4e307165fa1a4c3e3664d6845e34. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZBN532400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c352400623ab60878f065efbe334fa584bc58d0d43fcb468ff02b55a600655e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZBN532400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b65c7ea97e6303b186e098dc6091fffc9d3cc954ba8ca09069beeec1182149. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZBN532400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef297011662cb7500608ef50745986490cc5b7e9ae7c3f5d3fd515e5144dcdf5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZBN532400030.
Sheshisa (feat. CowBoii, Lastborn Diroba & Felo Le Tee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde30a3801b9e4f4787eec0ef95bd567f818e2913d6382e52d51bed838f19820. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZBN532400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dc4b91ed96a22adc8eddb04e66f89b43cb07b75871bd13a1fc0cab8e9e6436. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZB79M2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92eacdc221c94266283ae02abe34729f0e94348d2da6efc094945ec577fce443. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZB79M2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa229a9cbb44a454375480c61aeb25dc79cf0d329557a8cfd6bc90a4b5f4d151. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZB79M2400015.
Why (feat. Cowboii, CarterIV, Mbuxx & Vyno Keys)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44af56964745e42e513039ccc05924f2d25cb8c5e3573dd33a1ecb3cfd4b9ec5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZB79M2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85aa6c2c3b69a82a62adbb00e023323f5bebe69d709194e72e5dd5295684cfb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZB79M2400017.
Ama Vithi Vithi (feat. Ray&Jay, Myztro & Xduppy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227fb2a10ed07114210f3d8a08e93faae0cd1cc4b555d92abcfb921c664358e3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZB1OS2400381.
Cheating Curve (feat. Scotts Maphuma, Leemckrazy & 2woshort)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d917ed254f33bd496d03b27ff260744f1152446447d3b298d7fca9ceee6109. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ZB1OS2300240.
Idlozi (feat. Xduppy, Mellow & Sleazy, Yumbs, LeeMcKrazy, Scotts Maphuma & CowBoii)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b4dc8a94e7337c970d351f5c80a3889c55656c592e320bf58eb4949d348a31. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZBN532400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f16fdace5d2ff335975d7417a34fcecd790c6d63e34e1313e31bf6874fb70e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZACZ82300132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe821a735911072b5d9c9e44a1f81af64e73ea41622780af36b5c466f460b2170. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZACZ82300136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4971ea7b667e07749dd772e5699509875e5d31f010c2923cbde9e222a97322. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX872428453.
Ugezephi (feat. LeeMcKrazy, Scotts Maphuma, Matute)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e53308a73c9b95623e62af1cedcce10bccea985fdfc866317dca4ea12decfc2. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ZA56E2315341.