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 0x9af91e4397abfc8f92006b04320c256f1194fc326ba7aa11e56eefdecc55e2a9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3d3d3cb-5fae-4146-866a-c65c6167b5c8.json and https://artists.proofprofile.net/proofs/artist/e3d3d3cb-5fae-4146-866a-c65c6167b5c8.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 0x5ed4c0199810ec00ad9e1bec4b37c1f4ae34cbbd77ad6d9a3dbd8d848ec907cc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ZACZ82400118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35aa95d52ed10894b37a5ebf5868d4dfae4381b40f645d39c342aa3724777f2. 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/ZAUM72400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5932b97786fbba00ecd5ec3ee9a0ccade30f0b08465ed0c85226442423eb263d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZA9092400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d0c03ba9c791424b1423289f200004ea3f5752b9c40818b49e853e82c5ab9e. Chain 2 (Bitcoin): anchored in block 957034 (2026-07-07T11:52:37Z), 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/ZAC012401430.
Kwakhala Nyonini (feat. B33kay SA & De Soul)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead1b976a25be934229d7c482111a746bb5590f738c873a95e9fef820991061d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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.
Emaweni (feat. B33kay SA, Frank Mabeat, De Soul & Mzizi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6458bdb66c8c30c3254bbb8cde787b063d4730367c5e9de0cf813373ca2eade. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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.
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.
Abuyile Amathonga (feat. B33kay SA & De Soul)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832cfe42f0531262507b8fa85cf4caa1bb3d601f3fb4188c1d151d489603b6ba. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432470acaa1298ff569787a332ca8ff5ff245a0c246f128fff7b2a07895b598b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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.
Bavelelwe (feat. De Soul, DJ 2K & Philharmonic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916d36a2defe7ee855db82853a38a5d1df52180f9d7284a473043c7e40c3bf9b. 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/ZACZ82400087.
Ba Rata Monate (feat. Shebeshxt, Scotts Maphuma, Tyler ICU, Tebogo G Mashego, Matute Boy, De Soul, Sello Sebotsane & Ceeka RSA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca56ab6002689c8b4c6a829501643b56bbe538dfd218d09c269a980f3c680450. 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/ZBC042500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfa39cc35cc9a439b8321c33d05e4dbd885f8693ba789c04f5b4b6392d98870. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWFH2510717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed23e7fad2ae9032153b5a8d2dac96e76f44116f8cd4f7ff800378f0385fb1f. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:47:36Z), 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/QZWFH2510716.
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 0xac7689a5a4723a7eedfd27b33246e5de57f7db31dd507d34d0bd10b8b1a7911e. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/ZAC012400483.
Khupukele (feat. De Rose, NATASHA MD, De Soul & Faith Strings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a22141f13d3666e09cc5fa3ecc25b08979d4f3b144e34ceb37e20e77cbb19a3. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ZA9092400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076f3dab459859c4ed44b15ee08560b3305d953a738c5e125c84aea049facb71. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ZAC012301386.