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 0xa66bf632f809bbc628c38dbfa49641f41d6796a73bf84027f56febc8ccc88781. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15d08810-5a1c-4b00-93e5-d7e8ca8a3c22.json and https://artists.proofprofile.net/proofs/artist/15d08810-5a1c-4b00-93e5-d7e8ca8a3c22.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
きっと最低で最高な夜へ (feat. 抹, ｙｔｒ, らっぷびと)
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 0xf56f5d99f7fd80e8970494a765d0c63fc4658d7bc7cdcab05f4a968b2a533503. 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/JPW562106102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3926bea200c39cff250ed7a9565f1bf2901f67c9b5c83ed654542e725f5012. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPW562106104.
色は匂えど散りぬるを (TOS Remix) feat. 抹, らっぷびと, ｙｔｒ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536b53e707aaa8ea50eda7209c93e8733606ea5d415baadf706475d294d5f947. 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/JPW562106105.
How Typical !! (feat. ｙｔｒ, らっぷびと, Romonosov?, 抹)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33fbd493c87d829ce06743bdf81f1db72188301ae082103ae5ffacd04175b65. 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/JPW562109052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7805fb052a8d8e4d929d5630beeea0739677605b178c822a3192c29f1cd4b677. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPW562111992.
Flying Fantastica (feat. ayame, らっぷびと, ｙｔｒ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e075ec6bd5ccd8389c137289e9129c0f7a9fdfbfd8662f615011b353604d33. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPW562106100.
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
酔いどれマイクリレー (feat. 雨天決行, 抹, らっぷびと, ｙｔｒ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1be77dbc55f09b280d2e61e639b4fbf02c6ccd1b4eb0f9446a38b8b2f05acc. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPW562106110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe532cfebc66615f5645fb45103e68d657473533f1b39ebac9aea37c3954e703b. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/JPW562107364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303dc0209cca73a9b0c5f60c6832e0210310f886aeed59302ef172f5bc5553d9. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/JPW562107367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4956695c0b2726cc2f56a5b57c5750bba371319ebba9fa794f1bd16a2887ce00. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/JPW562107369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca66748c92f8e8f8a2a11fefbca7f944cce189914bfb44e326c6e1990df8c60. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/JPW562109051.
THE SELECTED WORKS OF TAMAONSEN BEKKAN (Remaster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac344302de8388a6f55dba150329615cdefb98964fac5044e7d61fe1f1eadd9. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/JPW562109064.
フラワリングナイト (feat. らっぷびと) - haKuchu-mu Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241beb46603f99b5a37cbbe6c67bb6ecd7c4e1068b6adbb9553cd7c675dfcc19. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/JPW562105079.
モリヤスワコ (feat. Tracy × らっぷびと × miko) -Instrumental Track-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8324c9e445edcd27659fc0954802562e1f91f741ea37c00cabd86c4f1de53d40. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/JPW562111995.