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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe688086e25f13dcbcbc48e55c6d5596a360a3f31d1d5b929b18c5459ca86548e. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e9c49f2-d219-417e-b5dc-6dea1dc27611.json and https://artists.proofprofile.net/proofs/artist/7e9c49f2-d219-417e-b5dc-6dea1dc27611.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Integration under the moon of codes feat. Mei Ayakura, かめりあ
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a7d3143cdcbb04f23f3e125107171d600e4da97704d6a4597e592d0baeae75. 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/JPW562104486.
First Dawn, Amber Wind feat. タカナシトリコ, かめりあ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0e0273985793e670404c1b09e8d626a016bb7f61fedcf8ad4ca6a8c896117d. 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/JPW562104556.
WI[RE/ED] PUZZLE feat. Mei Ayakura, かめりあ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d7f7289c3166002a65a8ca25cfea685c64b76c20b5bcda99135f8d7ea7f4af. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/JPW562104590.
CLOUDY WITH INTERMITTENT RAIN feat. Mei Ayakura, かめりあ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936ea7b40bc2b2399e3359ecc477ba6afb4c125b9bd9d4382449129c98cf02b8. 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/JPW562104506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a3e1bd6d9b04b3f2fa5c8f4f280b599c28604aa8eb0f74ec12a64edb6ec80a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPW562104597.
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
Plain Asia feat. Mei Ayakura, かめりあ (Camellia's Reconstructet Plainness rmx.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc38fb4a9de04826330fc65f919830ae60af9987126b09b01c2a89267d07ed8. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/JPW562104464.
Deeper Than Your Eyes, Farther Than Platinum Moon feat. Mei Ayakura, かめりあ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad232281938116e62673c8bf77ae8b0e4afde81515cfe336b861b6970188bb7. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/JPW562104538.