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 0x30f17eb85f4c09a447aa45fed339fcffcdfbdfdfae91c27d02d6f966f37c1406. 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/c85a5749-c1de-4df8-82b6-23d8e36b04f1.json and https://artists.proofprofile.net/proofs/artist/c85a5749-c1de-4df8-82b6-23d8e36b04f1.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 0x4e939c8e1ec3806dd8b31dc0af0eeb825f1415f8a1f654af2fdc54c22876630f. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/GBKQU2248685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9272759f29bb57924adaca821a47de36de5f4c11cf28d0131d756defaca0d433. 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/GBKQU2268330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d24140200819ca6b2658d9dc41620b2558ce6de1a7d59978893586a65856d09. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/GBKQU2268331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6f1db0bd85e43defe7d8c8400e7afc515a6547e280ee21f3fdd58fe3dc7062. 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/GBKQU2268332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54efb46786cb97bec4ba240d609979c9d09f3c1442b9bceff9118806544ce7af. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/GBKQU2268334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b23beb30ce1555e69f96ebf06fa18a17060ef9a90983584e1d5ff543795371. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/ZB7LS2300029.
MABHALANE (feat. B33KAY_SA & NANDI NDATHANE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e9ae00b78dc645b3d0386e234f2c3225bebff42c4fe0f0c76ce2c61a2fc8ab. 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/ZB7LS2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27c562ee036acc4b3e3990e700901c4e3693204bd53d10941f6889ab0d479ac. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/ZB7LS2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3423c497b843ee810d6088ff2d7c0a98cd7dc4fb4ddb9cf5f8a24a571928dc5. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ZB7LS2300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85916772ef18e4bf0560109480f293364dca2e52eddc8886e89e5149c6542d35. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/ZB7LS2300043.
Indlela (feat. Cnethemba Gonelo, Frank Mabeat & De Soul)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432470acaa1298ff569787a332ca8ff5ff245a0c246f128fff7b2a07895b598b. 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/ZA56E2416949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f744d7bf13c2d90e56ef4551b528ce75a52f67611db0370dda2155271ee94f. 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/ZB7LS2400006.
Kwakhala Nyonini (feat. B33kay SA & De Soul)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead1b976a25be934229d7c482111a746bb5590f738c873a95e9fef820991061d. 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/ZB7LS2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ba57a9e5e59f639ed197954f4baf2e08c466efb63f0dbf578d23d0a5f85e1b. 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/ZB7LS2400003.
Emaweni (feat. B33kay SA, Frank Mabeat, De Soul & Mzizi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6458bdb66c8c30c3254bbb8cde787b063d4730367c5e9de0cf813373ca2eade. 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/ZB7LS2400004.
Soka Lami (feat. NANDI NDATHANE & Samu Walker)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa453eecb8aa1319705ea3c322e7efe30922c131e4847af385acbe6f23b8f1f6e. 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/ZB7LS2400005.
Abuyile Amathonga (feat. B33kay SA & De Soul)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832cfe42f0531262507b8fa85cf4caa1bb3d601f3fb4188c1d151d489603b6ba. 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/ZB7LS2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd653d4dc03214858505aa4297334123d14c2ee523fdff434798d11475247b1b. 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/ZB7LS2400008.
Esinye Iskhathi (feat. NANDI NDATHANE & B33kay SA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3f2d3f34299c364cfcc2e73eb14af97fecf7aae91a2f8fd5253d8ddfde3123. 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/ZB7LS2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e96735c16967c87f58fa952f5dc374340ce862f4829f8a39bb1b165445027c2. 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/ZB7LS2400010.
Ezinumbeni (feat. Thebz rsa & Future Saxo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6ad8477a0567824e6a964b1fd666fe1fa5f26ee909f3e44557d8faf08643f2. 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/ZB7LS2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3b4df301b91271ee21541771bc456e8c61655329c94ab2636a67e92d510086. 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/ZB7LS2400012.
Molo Mhlobo (feat. Frank Mabeat, Cnethemba Gonelo, De Soul & Future Saxo)
Lashona (feat. Efkay Da Shiqwan, Lokzin Keys & Tumisho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96d3b8cb14dd385a68280e5fc78a34cfb47a0ddfb7044ee6ba6e8e4e1a2884e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ZA56E2528341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf375fc27d4dee5181532503e521cf2ec1782609e6be6280b002499fdb8045c9c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/ZB7LS2500001.
Amaphutha (feat. B33kay SA & NATASHA MD)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465af352696ca5812c9c9a21fb80bd4ee95151529522ef447bff12e867d7efbf. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ZA56E2528343.
Yekelela (feat. B33kay SA & Frank Mabeat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fae2ee257acef54d2e2f69d1c0fc079c6388126456f8b0d3fbb16d105538ec. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ZA56E2528344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d360d69452d56ac2e0b78db30e87221d9e7c114fcf45b4fbf244ba048e063aa. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ZA56E2528438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4d9f4816b7d332eae023f0665802dca74ee3312e4e14333f9e88cde93704eb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ZA56E2528439.
Shandapha (feat. Cnethemba Gonelo, Frank Mabeat, Lokzin Keys & Tumisho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8243a300a0da9775a3f9aca277537973ea4d31cb881fafb6abf25ec6c90050. 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/ZA56E2528440.
Kgoshikgadi (feat. B33kay SA, Frank Mabeat, Goitse Levati & Tumisho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cc015246f306e842ca047e716ea40c7cbb01389b3ca0c7850ade56053f0dca. 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/ZA56E2528442.
Stolen Sax (feat. Lokzin Keys & Tumisho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd59bfc08ebf5fe2601870c488d195f0314538adbcdbe375e43d8b9409086f58. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/ZA56E2528443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb689c1011d5df083693be109c628fb6e7a341e20d909f6cfe3c6f5cfc571b44e. 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/ZA56E2528345.