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 0xebcc296c343580c398f95ce302b1afb1a1bb5b41c6be0de3b07cd8bf4077f5dc. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b221d149-b0da-4c7e-8893-21be406e0552.json and https://artists.proofprofile.net/proofs/artist/b221d149-b0da-4c7e-8893-21be406e0552.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 0xb1401ab506d1ff714ac0b410ccd965201e50dc04b485b4fc8c783d3fb0a598dc. 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/JPB600813001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f04edf01ea04359f958edeab5b0c4dfa12512ef497a33134fa118ec1944cff3. 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/JPB600869702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130b64444f1baf5a93abb5c4898bd487ccfb31b78eeabb2fc6efaba167722111. 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/JPB600869608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d539872bd6610ef675f79d838eed7b964a5abf36bf2983e6f8111548a57c88. 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/JPB600845101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe856337562b96a64cae8f413bb205f6148f324829a27c18162730b9026f22fad. 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/JPB600833801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c706c4e4f91b327bb75a44994144bcd3d721528d8bb28972bcc401a0a9d238. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/JPB600813002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b7c56c5a7990d7c164ac57f622691e65390fa13cb982846563c4dec6436ea3. 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/JPB600833101.
Fight for Justice - Individual-System NAGO ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf997b7d56be921d5ea4b1e754b9e12e9954d06e20a687f2e3686106d6efc29. 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/JPB600842001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56390b0b89d286bad26591fea7eab875fa540c3ba3210153b7ef4b55a4d5180. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/JPB600845103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0b5b607845ed443fe6b86d0ff6ecc8068ac26efc62e87650900b01265672b0. 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/JPB600844902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a0630ce9bb5a4ca7079b5742c6d409cd9af027a0133343fda680c1062e8aea. 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/JPB600869705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1cca6e625698f8f8c34e42b9a6287d9c896411a9d525977e007215ae283988. 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/JPB600869605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa26d23c34f3a2b98ca0ac60aa52a1747e44e2b5636bdc8659a0ada55bc5aa32. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/JPB600845106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b607b7d95ec90b5e1cc3a2f31fe3f1bd2fb57cf9a1c088a6166c6420cdf937. 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/JPB600864101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e19befd0b219bb8739b75007bd02154d1cf8e524a4fe1ebc8869fb4ed57eac0. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/JPB600869704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705f3050a1bfab1cb8a9ff8dc302a5a14a1a6e09c4a3d853877c7a6120e124b7. 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/JPB600869602.
Shout in the Moonlight - Tribute to Garulu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba5e8d3f4fb88bcf2ed9833034d2128db421ca468277e7127676f618fa14ec2. 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/JPB600844903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4a7435188a4c8b700ef74d7ec98065bb631e39fd6cb24a95dcfc9271f6ab8d. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/JPB600869706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc805c083cf3e2d2f32148b86aa77c384e769c2e433e0aec4d8ce567e66e19ee. 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/JPB600869603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75ece69f05ae774cfcc47877020c298dc08f44cec8e1b7774efb04438f22704. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/JPB600844904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f52175578be548b29230f9ead8d84da199036ab7259af644a1cc6f18fa3021a. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/JPB600869711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51905ab0ffb70c42b62b3d69529e0f7988a4bada26b8849c504b6b5cad6f0e8. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/JPB600869604.
Circle of Life - Violin Re-Connection EDIT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a04875b23ad9d16923e3edcb951f4ef0bf9b677ac0ab793bfc41a797dc8776. 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/JPB600845102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f3ca9ac212ab844f7928ce361fb7fbd1c9c8a514fb55bfcf337218032f6742. 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/JPB600844905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb072ae0d29cd9dc5e4a560da52ca438c98fa3253107fed1350fd563c76155565. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/JPB600844906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef1543bc7b8cf6ebc723bd22c722a6bc610cbe26a54faae0a1d3e15a1a57ed8. 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/JPB600879401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce1254d5a7fd89d50549c7a8d9216d01ebe23eddeb95caf2cdd0acc6283311c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPB600869710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb164788a7342ee34953236332d342890741e816bc9749f62b55f9ccffe04b24. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/JPB600990809.
Fight for Justice - Individual-System NAGO ver. 名護啓介セリフver. Justice fist
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b66431ce538eef25ed787472ba7b8c717c3b3a30e274d9aba37f6517ba6de43. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPB600842003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d539872bd6610ef675f79d838eed7b964a5abf36bf2983e6f8111548a57c88. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPB600845101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a04875b23ad9d16923e3edcb951f4ef0bf9b677ac0ab793bfc41a797dc8776. 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/JPB600845102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56390b0b89d286bad26591fea7eab875fa540c3ba3210153b7ef4b55a4d5180. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/JPB600845103.
劇場版仮面ライダーキバ オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a8a72e1a7972514882bce5dfce1533b6ab0f8f5f0d835e7486894fdc42dcf8. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/JPB600845011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79722b1648372fea8f3b521beb0492b486b5524ff1d500d6232d9f15faf5863. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/JPB600845017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bbca500b3e598bbcd2ed76ca1d6ccef21bf454b0b62d10900f77216f643df5. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/JPB600845043.