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 0xbcb3c637b7be65ab16ea5c81f588a59cca0f5349178b71507eb46c614383936b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dcc3f96b-458e-451d-9c53-6f9e6d61a4b3.json and https://artists.proofprofile.net/proofs/artist/dcc3f96b-458e-451d-9c53-6f9e6d61a4b3.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 0x5a7a1da8d0208f52ca0abfaeec2dad5c9458d7da8ca8cf5313e9934d18890b9f. 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/ZA56E2315477.
New Piano (feat. Nation Deep, Kaytee NA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cc3369b6c4d6f7d69403be2e530b9ceec56ee341564be9b06c20cecbfe3344. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZA56E2315478.
New Piano 2 (feat. Kaytee NA, DJ Kwamzy, Nevrr49)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fb03aa2e3e4bc6dfc4a015c33fa2a5efddb9e6eebfe5aab2f6976346449dc3. 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/ZA56E2315479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5e2ab4b2bc5f99875c7b16ffb7d972375f812a73f604e5dbd94bd27a9595da. 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/QZK6F2417547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142be99fd659d3a0fb7f8777738791aff7b1c75ec06aaed082a17cf9cf793e1b. 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/ZA56E2527231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf523d7211ccaebf4a01fe253b8788dcb2757f3b086f1e22e0317c9049e3d5ea. 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/ZA56E2420198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450b36c850dc86d8eaf55abe216f8b2ef5c76d2635d0a49170dba8e48fe9e5f4. 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/ZA56E2420201.
Nando's (feat. Scotts Maphuma, Sizwe Alakine & Thesiix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411d9a20971faf210895899e74317d5fc04da5d22011a3885708252011f45db7. 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/ZA56E2420202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b526a0de4fdd9baec8dd028a9063de6e0b07f6addebb0a7fe9077c1cf75448. 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/ZA56E2420204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b47cff604d48c3476faaab2b72b2f030b9595d688eb6e1795ae62cbae122a1c. 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/ZA56E2420207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a2069b2efedcb1e8cccc678150027d7f74d2143f9c2700da66d8b423a656cc. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ZA56E2420209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c160ddfda86d00382d595b2ba6ef98ae7c9c86363a1cc1781bbc652791bb296. 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/ZA56E2420210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5078f0b6524af0f29516f9d44261352a4f74a39610b853a6477cbe996ddaab. 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/ZA56E2420212.