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 0xc5a3456fafb0e525bb54b0919d9e744f736bd5866a356d83796c2e1500b0ab11. 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/ed9a9168-99e6-4507-8e06-c04da79fbcad.json and https://artists.proofprofile.net/proofs/artist/ed9a9168-99e6-4507-8e06-c04da79fbcad.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 0x78ae663a1ddb643f8b5b3c1de48251cfb6ceb4cb75cc066470c9f36e12e9423c. 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/ZAC012201367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93768bde38a130ff37eac7e64e372b3861634364a092c8b1d820cc04473530e9. 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/ZAC012201368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3714562de468d6cfe2927c03df3de0ed7dc2d547679a55fc5cf12cd457c2f1. 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/ZAC012201369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409fa86e55ee38848ac674824181ebcc8faaebb5aa73b5eb484ebda1222f466d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZAE3A2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54778e470f14f734d7b13c63b535f49ba697244ff31b443fcd6d3ea691602626. 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/ZAC012201370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0fba66a074867e09110be1be8350fdbcdd6b37204485620518a5fbdd09cf97. 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/ZAC012201371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487d2616b0e53524f0b8b933a2485d4c402f4bec26c2411bd9b29ec946365d4c. 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/ZAC012201372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cff46b9e1643f2dcfde48e193fdc111f91ebb7299a7585de1910cc70fd519d. 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/ZAC012201373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b53db42747d8f2046eddeb6d9cb35ccfeba248f2999c7eb2923fbfb0010ec3f. 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/ZAC012201405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416475cacdc7df951cad8d6776b92d0e97e33b252ebe1ab1ebc9c7bfb61637d8. 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/ZAC012201374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d707ce97262808a842ee13c68cb084fb57ec7ccab10cbefa9b4a8684d6d130. 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/ZAC012201375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e67162385d1de0e285cbc3e566d5d00976b54274431d277819851d60d82e19. 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/ZAC012201404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562690f33774937e725ac38397749569df0a9e6a1df4da79789b3aa07451ce73. 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/ZAC012201376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abd403e252fa65151c8ff3f7e06e4d92803839358edd02a11554534317673d5. 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/ZAC012201377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb36f6cf7540da1d014a6836bd1a068b30574e34a507952921e771e7c8cd35a. 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/ZAC012201378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1aeba9d607ff6372c4018667c5f2cfb537c18c2037051242a13464389bd742. 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/ZAC012201233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2688ee117118664eb0c3f508b09090776d253721a1f68a90a91890e3e6e9b30c. 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/ZAC012201379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b235cd950c0c6ca08e1bc71e963e79e886bd777923125fc4f53a6f9b28628c. 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/ZAC012201406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b30b6e44c91d88b94a664dc6f9318fab50998a6313e492dd3c4e35f3bd3814. 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/ZAC012201380.
iMpumelelo (feat. Msongi, De Soul & Tumisho)
Ziphi Inkomo (feat. DJ 2K, Frank Mabeat & Tumisho)
1 000 000 Amapiano Seconds (Kings Of The Surface)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce4d796a680255fc87550920c714c8e0c0db7dd69b5c210ecf4fa67dd5c1985. 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/ZAE3A2100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2de1c3fee2d704f6f1767e66b8988eb5c3350c399b61c2022ae7d39d981019. 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/ZB1OS2200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5feb5f05193d8f9681d6ef6a1ca5a597753b87fc9b26cb1b547cb59b7936199c. 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/ZAQJX2100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7d2a81bb02809872857cbb86e5e0236c49f663c8a9c7fc9996a3d69c3d8332. 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/ZAE3A2100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2298149b0bd886a1bb1f3b78a5d9b7fdd309119f7551036e31ee4ce9d5b1c519. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/ZBO732200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c638a5631a9efb52da63f0a2deb38cd851f85587a7f8418637b1ed922cbe9c. 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/ZAE3A2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7350501431e8a4ab3ab3c504da37b3344a8a44f626b15e8478653146d146a3. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/ZAE3A2100045.
Adiwelele (feat. Daliwonga, Sir Trill, Shino Kikai & TNT MusiQ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc788b61600deeec06388a5c5949420617f1d0d331f6dcd61d95a4a4d039f573b. 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/ZB1OS2300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7746a3dc2351772dc8044820f5026e2a74e86120080e7307dcf0adf75597a311. 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/ZAE3A2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7350501431e8a4ab3ab3c504da37b3344a8a44f626b15e8478653146d146a3. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ZAE3A2100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bdc3597769d505a7fdc928c785ac8e39075bcb3c81211a712e951d5b124fbb. 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/ZAE3A2100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c638a5631a9efb52da63f0a2deb38cd851f85587a7f8418637b1ed922cbe9c. 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/ZAE3A2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee71efcf33ac4d12b01c4663b783f5dfff1c53bad75b8d51b61e78f10d243d4f. 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/ZAE3A2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72e4ad6f0debccf016e65643c5d8ed5f034b300f6bc07f8fd3dd3ceb6e1d3a1. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ZAQJX2100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63d8364d78f9e0a41859c9a31866b2449d18b83771c5341a1984ee77ff889d7. 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/ZAQJX2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4a88fd706a3b3b6ec2b63edcc41c556f2a121d2ba44badb278f698e6c2d9e4. 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/ZAQJX2100005.
Yebo Baba (feat. Madumane, Mellow & Sleazy, Uncool MC, Ricky Lenyora & Sir Trill)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e932baadf8152aa8eab71266cfa013f7f5931cf3f2f841e438da03c81c0a3cd. 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/ZBN532300001.