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 0x603b73120857000dc4c0dd9f14377498bfed40a333084a56906f2859b8a0ce5f. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c40d36fa-0b5b-4b19-a6cd-02883236b01b.json and https://artists.proofprofile.net/proofs/artist/c40d36fa-0b5b-4b19-a6cd-02883236b01b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ダンスダンスダンス / ハローハロー
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 0x2bad18560583d33f8c35fcc304f015ffac264192406fbf5e8b5f10f2e057e7e4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPB600817609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6e6e4b6d3876fb6963d2dc5b1a071cba90d4c7b47abb7e2587a99f58c671d3. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPB600922202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf585158fd1fdc792e5dba2066209d595d9177c4610d4f68957a8aa18b2fdc1. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/JPB600868104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd97ec2082f8ac257d93f2ba6939b0e9a9022d25a31bf0b9a0b101f716bf5753. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/JPB601011301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891e0b2d04f17fae610c9fd92b1b57cc9c5979b2f2ffc87cfda87d65d261e7d0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:52Z), 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/JPB601502971.
MASH HOUR 平成最後のちくさ座 (2019.04.29 Live at ちくさ座)
たった16小節の夢 [Dream In 16 Bars ver. (2019.7.15 Live at Portland Roasting Coffee)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029b96227b0b74f1d2d5dbbcf27483c869f2563972c27174441f2e3cb9a07545. 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/JPB602195534.
夢から逃げていたのは僕の方だよ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f424b043d66e63f38cb332ece441db11858fbd63995955848e98f15deb80d0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JP92N2527510.
THE END OF EVANGELION (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b926b6e50dde0d1ba4c9fe16d8853b8c493446447f2afa9508b1989f5905ae8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPKI09713040.