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 0xf87fa66d3a8b11e2cd0f31c4b1f7e66506c8b946a6017d8281d111669bf8f151. 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/6681dc70-3f18-4a72-92b0-6f8bfc211388.json and https://artists.proofprofile.net/proofs/artist/6681dc70-3f18-4a72-92b0-6f8bfc211388.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 0x63690fcc6f901a5b2be6e85b1cc00c331d85994b5ee684adcd5c7af88385ed14. 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/DEA622303420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560e8092c103fb77d87f25d94cd5b0de3ca7df65e1ffc4c1b82bff0fc28f4606. 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/USUS12300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0df99082fed55b3c87c85a1006d5b753914147f0f1ece7b86f899e7b1675cb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM24S2302791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b76724fab17ef485f14ad2641f4a691c4df4e16d4e1239fbc93c3687f38a11. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEUM72309436.
Party für die Kleinen - Kindergeburtstag & Co
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9c2db770a181f6ecf874d38f1ffbb142f168b06854a1c9ca9833ccb95364ed. 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/DEA622000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a96e53e1f8f4475f37c29c026eac38e6a07c6a33a04f7115cf1037fa2788812. 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/SE6582200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c80191f610fc6a1fbcb70fa8a8837b9fe80721086f360433edf6076053ba442. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USWB12200243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976ba0b2611560c9240a58cf36fe3febc1df002b0ec92052f7225091334dafff. 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/DEA621600632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1b7f175ad8cd84969f9985d1da823457f18045752e60278f051c7eef713f46. 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/USAT22002729.
Somewhere over the Rainbow / What a Wonderful World
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58889bf9eb759368e1b913c2a9bb6d561cfd74cf22d66cdb8ef6e75673b7daa. 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/DEA622100636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b27814128de1255f60c201cb9d7e8c1c0b775ee80c7fdc3d88b2ec41ff18103. 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/CYA112001086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218bbff6d97c55afd513a22912ecd402ce5077269b7fcef922dab03d4b51bfdc. 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/NL9KQ2390533.
Wanna Dance (James Carter Extended VIP Mix)
Wanna Dance (Alle Farben Extended VIP Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe674d24376c82a44aabd881cb63aef66769f9b55c4030349ba8622fa68e70ab2. 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/SE6582300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a0d52504da67551c10cbf4dd82e496f27c132b2a23ccfa82cb293247e96cbc. 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/ITQ002400247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f04cd21c05653bac5346f9f21c9f80b9ed72c6baf3b596f6248dc3077c093e. 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/USAT21101961.
I'm a Machine - (feat. Crystal Nicole & Tyrese Gibson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f39b0696bee6dae20fab76bcaa028b535dc2eb7a657cc1ca29d51f8f0ac680. 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/GB28K1100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765c352dafc7f6f89e5d9d828f2bd49762137b95eec669d4032f0979ca9e5936. 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/DEA622302004.