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 0x92e21dcfad2c64a0d1bd5f016b702ac2b488c396847a2da23e0e28d05935c3cd. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f766b30c-6805-487f-88bf-471a92d9fa75.json and https://artists.proofprofile.net/proofs/artist/f766b30c-6805-487f-88bf-471a92d9fa75.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Real Friends (feat. Masato Hayashi, LUNV LOYAL & dubby bunny)
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 0x5dec2622cb74524eba0b0318cce2a5882891d7de66d3b82e447bd662b9267e1c. 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/TCJPA2401887.
Be Okay (Chi, Chi) [feat. Kohjiya & YungFLX]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6dcbd4162b09aa20cb91ac7ba47862f6c2895ec1b40b55c413b30feefa65fa2. 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/TCJPZ2484743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb36cad217efe73745b6a4e26bec8c593783928de5ec28be61a928d28c346fa0. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/TCJPP2171516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c1f4b5c1556336d2cd0831e5a1f4a0f69bf153eff2a7877f3c4c0e269a2cf0. 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/TCJPA2401916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff8945ca6858a210d46b27f78cda3ab7bb46338d1cc12965d021ed542b1a863. 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/TCJPP2131484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81710b3f860a1e636bf6b8f83a33f1f4918a4be02f5d9bc2fec697e93e4a086. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCJPM2060288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57060d08c1bf89c6369daaa21bd43785fa05dc5d79f02049dcf6a02bc6d23753. 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/TCJPU2370893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c590c1c926d38055e2754bdcd561987fe67852e76690385a4b5d89c065d2b0. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/TCJPA2401894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5eaae02a791be6b92e590ce0bfac3162a44fd930b56d981522a1f6f5eff7aa. 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/TCJPO2165050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639087606bee07d7176fa65cfc37f15daaf1e2fe5e5b8fa7b2ed6092eabb43f0. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/TCJPV2396512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea9c25eaf5ffc1a3d9c22e26b07ab99108bf722369dab35507051434c2a24a4. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/TCJPM2068374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329d16614764a36e4e1b02f9448a29f17ebba36025042f9eeb266bd310fe6344. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/TCJPA2401892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6476af83054a9c6fc703481bb39a9fa46dcf4130668dc5e8a825c286cf54f3. 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/TCJPX2395345.
Block Party (feat. BARCO, Flight-A, Swag-A, Crazy-K & ACHA)
Bad Combat (feat. Crazy-K, ACHA, Flight-A, Swag-A, BARCO & DJ KANJI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2982040ef879cc7f687eec17134d0084ce3c817242701ee1150ca9a8a0a00f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/TCJPB2423445.
In Da Club (feat. ACHA, Flight-A, Swag-A, Crazy-K & BARCO)