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 0x499c148940aacdf34c386854b0cb72d7fc26961e55c2075678ca23fcf983f6d9. 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/ee5ec363-3fe9-4934-9440-e709814377ce.json and https://artists.proofprofile.net/proofs/artist/ee5ec363-3fe9-4934-9440-e709814377ce.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 0x151e2ea57d37622432e9fed25cf933f7b6b2ad79b77822ecde194303fcb3230c. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/ZA56E2304331.
Ngiphendule (feat. Cooper SA, BLACKSNOW ZA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd274bde9c785d1bb2a9f45ca201cac3be8fe4f1c5b8303ebaa61fc8727ffd4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ZA56E2415718.
Asiye Khona (feat. Zuma, Omit ST, KAIRO1829, Nation-365, Selbisticsoul, Mayenzzy NG & Ydee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bf262a7bd5d2b45a65b675eed2b0ad314438904de7c52f5c804daee3211840. 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/ZA56E2526965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365d03146a8e62c85387a41b55383186b29e04ce42527d1d4451ba4d4960cbd1. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ZA56E2527248.
MSOTRA (feat. Omit ST, Soa Mattrix & Happy Jazzman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19919742249addf65f6734dc5c6a0482233d2af99415adecc5d4abb2eeded9fb. 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/ZA56E2527249.
MEMETA (feat. Murumba Pitch, Stixx & Omit ST)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2360871746a235fdec02c574c514aa0bd75278a58f6ba7dbd9243ba928090063. 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/ZA56E2527250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09f5b13467d86e980a0e430a520795513430f6a10b2163171b86d2e3529a66c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ZA56E2527251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d1b7ff41d6c1d8deab604140a691d6a12f7d6d3c20bf3ab2d3ae90f9ef7718. 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/ZA56E2527252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bf262a7bd5d2b45a65b675eed2b0ad314438904de7c52f5c804daee3211840. 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/ZA56E2526965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7238bce3ebdb6eb8fca90da72077ddaaa823a6547f80db4775d5ab2b0d2b7f2b. 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/US23A1527014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd523894c4161ead9e57297a098e01bf01047896a6d8d3ee5be3b9adf34c36e2. 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/US23A1539800.