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 0xbb3ee7eefa6ba55dc03339d5d816d1f877aea3fb42422a769292016a2ff0877d. 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/bd01f4ad-ee36-4a59-834d-6aa43e07d732.json and https://artists.proofprofile.net/proofs/artist/bd01f4ad-ee36-4a59-834d-6aa43e07d732.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Marvel Battle Lines (Original Soundtrack)
Ragnarok M: Eternal Love (Original Game 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 0x9341e7f2a21049db6c20c49839e7a4cb31fc0822bd313a475f112526595f4268. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX282206623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeacfc5177125a0c7a59553937c76082922de64ee3b7ccfc740f10b7dc501a680. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/FRX282206624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af630c359fcb0875010f5c2f1bbad629cd0aa62cb1e32dd21c03bf42b9e2b9c. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/FRX282206625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaed812ffc496f8708934bd451e3e1b9177b52022e4f61563d976beea00b0ab2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX282206627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0655a99c7b644be8e2f81b98793576d954e52f7c7334c5b15e2b416bd7a8b243. 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/FRX282206613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c055ed8bc32cdfeda4e88a759f9f84c498e464e47361efac24dea218197bdf8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX282206629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdc816759f8ea9c2b00f23bf37e7802590cea60ef3ac052bcae096c76eaaf0a. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/FRX282206615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c94c77ad0f19bf19cf77fcc0731fe3243117f12500120d9dddbe3860448db7f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX282206616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8e1102e3a1a21e950bb8185e07b40d000440ad7bceee6e06820d88fa775284. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FRX282206617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf11f780272daafe553af5684e8e25198c0e1d28d485d714b98de201d920b2d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FRX282206635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f6efc656a421b18217c3402aa2d0551014601fb38b70739a4cab3b330b3256. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX282206620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae7bff889ef3b915dfee61d66883ba0b5dc124a7a229b6af4842a3cd42fa895. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/FRX282206621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203c843ccb14112b592d02d9072e94538748720facbeb922f77f845c38472da6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX282206637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29837f1cab07716baf8eb87c635cdc1dca46dbee0b846151f743f59fa589bf92. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX282206622.
Gaea.Zero - Aether Gazer (Original Soundtrack)
World Of Metaverse CHUNITHM Original Sound Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef5a8a490f38921cea12416e8bf6eec702d1bb8273c86e8b77787f00993baf4. 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/JPX301606880.
ススメ☆オトメ 〜jewel parade〜 - ESTi / Blooming Floral Remix - GAME VERSION
THE IDOLM@STER CINDERELLA GIRLS 5thLIVE TOUR Serendipity Parade!!! SSA Original Album THE IDOLM@STER CINDERELLA GIRLS TO D@NCE TO (GAME VERSION)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a25eb29ed3097884207451fd3c559b5acd382bdd03f13b8890811a123b73db3. 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/JPCO02408870.
O2Jam - Music & Game (Original Soundtrack) Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6891e7e78ec714c129357f4f613e50e49f90a053a27c77cf4ec4cb864fc3ec5. 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/QZEKE2003504.