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 0x265ffdbf0acfdb4e037187af5a915d830b581b081ecdd45e45684f8da436330f. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d2543ee-90fd-4c98-8029-6c2bebced115.json and https://artists.proofprofile.net/proofs/artist/3d2543ee-90fd-4c98-8029-6c2bebced115.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Overtaken - Epic Version (From “One Piece”)
Naruto (Hip-Hop Version) [Anime Original Soundtrack]
Matrix Mashup(Original Motion Picture Soundtrack)
Naruto Homecoming(Lofi Version)[Anime Original Soundtrack]
Brigada(Original Motion Picture Soundtrack)
Reketir (Remix) [Original Motion Picture Soundtrack]
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 0xf1f3bcc68104fc17a4a12a0053bfdc241d9290596872bbf1c3765cd046803c11. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCAGN2237184.
Brigada (Hip-Hop/Trap Remix)[Original Motion Picture Soundtrack]
Bad Boys Mashup (Original Motion Picture Soundtrack)
Bumer (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd8875291914b747723058bbd9a77f38c0dbb218a9b24a0f460cd1d5b22cf95. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAHO2396039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07676a98f795667cf5a58ec45fb077d59589a915eec49a7057ace7b084a9c094. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAIK2498206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efc644b80caeae8976327de4f880e31f09f4c70e28c6daf595e2c67bd13b6ed. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAJB2432776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0188ce90455acb8c896a74694a3287e061fb55d4f905ec45a7fc3a76cf580d30. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT65Z2587806.