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 0x65b1fa748e50879b5636ab9445485dd81ad969a00d120e31bd21e796b4c4ffe9. 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/922878fc-6277-49e9-8f18-e8df893064ef.json and https://artists.proofprofile.net/proofs/artist/922878fc-6277-49e9-8f18-e8df893064ef.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ubusuku Ba Izolo (feat. Lucia Dottie, Ntando Yamahlubi, Emoji SA)
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 0xfd0d86a3949a0b6c109486ec0851e27da9452fcee5cc38fe9fab9abed317aff0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZA56E2415770.
Mama Ungakhali (feat. DJ Kap & CHARLOTTE LYF)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bfef0ad3da8ccdb60c94ee81838de1ba989f577eb63560b5eaa3fd7ea7247a. 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/ZA56E2416535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c12abb44cce9fde4c35715f2d2cec7a00c578be75ea1d99425859131f7788b. 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/ZBDTT2400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e3bce22564206ae00b51ea81eca013ccb66e2522b941e80f38257b27a1beb6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZA8212300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b79709d82ffcad22870b9d1ab14a9872d8fd2b6d676c6ffacbfe5870d2ac06. 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/ZA56E2420768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d67a78e18964c17a643ccacdd5ce47135010e52d744e7bdaee293a82c047dbe. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ZA56E2420671.
Morao (feat. OHP Sage, Nthabi Sings & Romeo Thagreatwhite)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53088a026145035ab01170a06f2816ec99ef1cdab686564cf8d24fe80bcb4b39. 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/ZBDTT2400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6386399a45e2b3ec74758111543dade58fa998206116b4c7c4036281b3d006. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZA56E2420674.
Africa (feat. Romeo Thagreatwhite & Dalom Kids)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0b708e50b061959ca3ab538453d40cf42995649ba5f4024c4dfb56b663d037. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZA56E2420676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76b0f84a634e15bc9f0e1eae96ec35896b82b9db078e6d4d40c753ce04433d9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZA56E2420677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07093d7fa8b08fd386a8492ae4ccbadd1fa36e0de1f06d2d1c0660f41ee1ce57. 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/ZA56E2420697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53088a026145035ab01170a06f2816ec99ef1cdab686564cf8d24fe80bcb4b39. 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/ZBDTT2400065.
Dithapelo (feat. Ohp Sage & CHARLOTTE LYF)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d42d5ac25f5ed6e50be2181a9c23482366a4e1e5a6f38346aa33e06e0b1aaf. 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/ZBDTT2400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607d24b37c5c58fd15d1ad0dbf2cb3af11dac91c2d9b6b6397ccf7c8d8846942. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:47:11Z), 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/ZA56E2420675.
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 0xd106e2a96144dd78d3a207732658e59facd00e888598af4f22e9181bbf68603b. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/ZA8212300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6236a443d90fb22544776bd4614b53c91afb2f4b1f6e922fcdf9b8d337cde609. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ZA56E2420713.