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 0x62fb765f638593b7545cc4e2b50f1be450331025066fac359e26345250b5f3d4. 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/a533675c-4067-413d-8ef9-0028c7d6d8e7.json and https://artists.proofprofile.net/proofs/artist/a533675c-4067-413d-8ef9-0028c7d6d8e7.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 0xaf3ef8aac8b756dd1adf8991c3b136d63856cd75db7e774c760469bace9803dc. 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/ZBCXB2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a27350f995c6ec6cabf1221a3fa86e23a73532f7310dcc6c1cd750b18524078. 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/ZBCXB2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efe08c230e9cdb77e819d6032ff8ead551af9b23d4ee100311c4ba2fe10ae9a. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/ZBCXB2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb141adde464b2eb19d890e64e25404972a2735cdb279404bf1bce60265761eb3. 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/ZBCXB2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965172e60156f1d8944d54d7cb5a1779a1efa92e681c19863fca13be411d101b. 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/ZBCXB2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a1ac512cd493cab94b7c8327540203a6343f7fcf347e0116da6b217fa1924e. 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/ZBCXB2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0061515372f2aedfcfecf561b2351373229e756941bf943166860ff3df7a1eb6. 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/ZBCXB2400007.
Khuphuka Iapho (feat. Sundile, B33kay & Cnethemba Gonelo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac181db71cde1f8d0dc58798d8f81273cc855c81c252b051f0ec3eef9ba8c51. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ZBCXB2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49c1056182ef380761ebdcc78cb1a0bbbca3a6e0e31ec25eed14da3e234a42b. 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/ZBCXB2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4052f80db2ac1ceaac8a1dabd3c809f5f074ab8fdc67a018403b036c500c49e4. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/ZBCXB2500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7817b38b262737984b7d841b35288648e70576b3f7fb0558898ba7385e7f4fb7. 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/ZBCXB2500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b332daa6b24993054583c4b4f3c18aa7c20839d99f9e596136ac2312c4a833. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/ZBCXB2500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d5d28e93eed632e7d54e6c8c746b335862330e8f864dd84a7387f989145b14. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ZBCXB2500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e87bc36c51f126e4aee46f18358f7b5b3faa62c51a818f5cbb567c33772b8f. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/ZBCXB2500024.
The Gospel According To Artwork Sounds Chapter II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf78398976c68a55d490fc30636c946e9912d623206ca23446ee9b1eabc31b92. 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/ZA56E2302114.
The Gospel According To Artwork Sounds Chapter III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe206c6ee61df0d2a661a8498c52c03887eb008ca8cc05c58aaa016b589ada17f. 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/ZA56E2415950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf78398976c68a55d490fc30636c946e9912d623206ca23446ee9b1eabc31b92. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ZA56E2302114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74988acdc249707a95ea2e116bab4695e87102819c641ce26b5cb723d82aa1b9. 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/ZB1OS2400291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f1fe0f543336518b8141d544cf0aba61f33d82f25d138ea41381d44fb0d117. 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/ZAUM72300864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f1fe0f543336518b8141d544cf0aba61f33d82f25d138ea41381d44fb0d117. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/ZAUM72300864.
Mnike (feat. Visca, Murumba Pitch, Happy JazzMan & Mzizi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b784687ebc3626b63c2fc0b23960465a170cbc920ec754dcced5a8a5e0a77f. 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/ZB1OS2300207.
Imfula (feat. Nanette & Baby S.O.N & Mzizi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2d44e99f3d3fb0dfb230720e627dd0bbe99738f0712fbe6dd3c4db6a2b5f53. 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/ZA56E2201725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87fae3be24fa13289ac3d4aad4bb57895ed4ccada86f7ac51b6cf0ff7d2c323. 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/ZBRLA2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d278473abb555c247a3cc26a6e79ca2da751203741028c94531b2a6a6ebaff. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/ZAR7A2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f00f9fdbb3f057dcda8b491de0f924d82e5e4ebabfcb25db87f56df7beafe7. 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/ZAC012401379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d34154263d92b2c7916a0288cebbba9aeb99d21c32e1e578e1e8b20faf3a618. 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/ZAC012401381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49530823642116413585936b15e964e8074f46c723ecee6d3c7d77258081fb77. 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/ZAC012400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8d8f40b230bd8166af2ec0633788e99ba89ea20f8011e501bf1606bab3e5f0. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ZAC012401437.
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.
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.
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.