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 0x85e416ab60155b0d181dde5f894cad4bb18bf08519044539f81734e29a81e962. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c18beb3c-42cf-484e-8e2b-30882a5fba52.json and https://artists.proofprofile.net/proofs/artist/c18beb3c-42cf-484e-8e2b-30882a5fba52.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf341e048d058a335cff866127fb28096d764b0950c828167f495d700ba1de94. 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/TCJPT2218032.
Yozora ni Kaita Monogatari (feat. Salyu)
Yozora ni Kaita Monogatari (feat. Salyu) [Shingo Sekiguchi Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437be47b5f3c2e64f38e024e6065074856bbd4dfd27a26133a345663f5a75c71. 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/JPL542400637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0828ba74e79eb6bca74068e76bc457ca516234dc854b7b505e45246572fe2e. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/JPL542400638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866424ac53848809fd65335a32d0caddc5254e72f3f7a6ec4dd803aa00351528. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/JPL542400639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0dc7fb5032fa5b5496b8e9bc1b77e3e76e7010b7a1173584ee686073dfe888. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/JPL542400640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16e224e26c374ec426218aaa49b7b814bc3acef0b4f6d624cad849cbcb9961c. 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/JPL542400641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad85572affa53f43264fe5a462da3cd4aa127d8f38fe642677b5dabbc475fee6. 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/JPL542400642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2166a4bdfff853f7e47bf8f09ddffb9a5bc380d21389e08ffb308b2bc5b13c31. 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/JPL542400643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef9c8c4a6063ebd38af5655bcc7330d3a6f1794c280edfb0865c10d998e9b7d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPL542400644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ee6c9a8e06b4e8216bb93965f11f8afef7c717481fe9674033aa55d6049d77. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPL542400645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c365c2d44b60ece9c3d8cf8a26eb532d115420a42e4142d00dc5465c3b4b564. 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/JPL542400646.