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 0x851ee570e4f31114bd4dc3be669399f52d9674435c6530432e3d6e60ba6f5ba3. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c5d9034-6b15-491a-8ecf-22a538211de8.json and https://artists.proofprofile.net/proofs/artist/7c5d9034-6b15-491a-8ecf-22a538211de8.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 0xb87b3bafc968c37769edca220ede84dd561c8bc549b069fef6746f162d6f0d5e. 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/JPJ591207727.
Psybration - Fundamental Progression (Vinyl)
ライフウィズアイドル ボーカルサウンドトラック
위대한 탄생 Passion Of The Great Birth - Blue
Yellow Claw Presents: The Barong Family Album
Gianluca Rattalino - ADE SAMPLER XVIII + Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822e40f08fec3256485ce2c94a8444ea2e6162d6a8381e91aab9b645f04bc8d9. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPAP09901714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f5acd6b7ca2b7e3634306875b27ef0cb1d00d6fd896211ccef58d562268c58. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPKI00034990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851d900f9360b5c82cc18b218c1a43fe2ac7dfbe5216f6b1c9e877b968702835. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/JPD600300957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787421ed130427f0bc00cfea56a7ea294ce260c38b84504b8f3128d01c712a5f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPD600300991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcea9bdda7bbf3a79efc4a7db7f5da7dd633e32d76e7020d00632a66379b25e. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/JPD600300963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb997e6bddff1294c097e0e7b7336c66ce9643d8ca1b1a71f0f67590c7d96bd51. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/JPD600301202.
映画『魔女見習いをさがして』ミュージック・コレクション
おジャ魔女カーニバル!!（魔女見習いをさがしてVersion）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090365b07176cc48fc66ccdc022a6734dcf9bcf4f4ffcd16ddb4b4bfe467f84f. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/JPV732000104.
The Supernatural Sweet Shop (Original Soundtrack)
「ふしぎ駄菓子屋 銭天堂」オリジナル・サウンドトラック