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 0xb9c227c88018dcda3ceaed0520c68a3b35c3851e7db1fade477118d58a766bc4. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/026e42e2-333b-4741-8381-90551af3bd56.json and https://artists.proofprofile.net/proofs/artist/026e42e2-333b-4741-8381-90551af3bd56.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 0x7130bec6b641e5ba2831b0a064ae0048a6122527df85f51c36ce55b58f27f543. 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/JPB602003078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac34b6322b3cf33bc71c1b1bd63af5c379e1cb8f1026f1d0827f6a5e5c621ae8. 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/JPB602003079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0203dc18c0cb1e2c639842d7ffc3113759b66f2174afacca12fe54a52476a985. 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/JPB602003528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5deadcea8f2e243611f0d4310a67d61aaa9f25f573b77a17320a549027245b. 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/JPB602102298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1554bc29fc8d6df92925dea473c04edf6f41f08a9101f3877a0bd05d0536346a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPB602102156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f054315247e7574535ed3ca9e294d8e5a6abcd127a7426471485ae82c9c7cc8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPB602102229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dd76a95b0c297212f36d174e90741ada4f3c9df917773f7295850a3074cb89. 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/JPB602102303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be11acb0f9300a11739d215b371890319e19dcb2887ac3be82e57cdfcb27a25. 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/JPB602102305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba5caf9a7b78ede789acbc12d2c530c1075f1fb87d3d64e25c664125eafe6a7. 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/JPB602102307.
ストリウス・レジエル・ズオス(CV:古屋呂敏・高野海琉・才川コージ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8877f17aee719d21c2dbad4bf44a79137ee4da768b2a33eaf1f4021a6fe512f4. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPB602102310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d024edbbe5466c397831052ac06c1e19f43227e71d801a7a31f1fc59d9d45fc. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/JPB602102311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd685c3954f05f931f2313b46f54fb30e8d064d8f5eb41c36463fa4d9c745b04f. 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/JPB602102301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a89d97f4ed61ccc284682d493f5ffb04ae921338be41e930f8019b0b740a16. 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/JPB602102302.
Bittersweet (『仮面ライダーセイバー 深罪の三重奏』主題歌)
Bittersweet - 『仮面ライダーセイバー 深罪の三重奏』主題歌
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da1f0fef6033d9db057b656fbf8f1a09f0bbf3c2af36482571689dedaf7f8d8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPB602200646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8b10ac3cc870182534bca21928755cb8151f7e55f8133690d328eb3d167dbb. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/JPB602200659.
Bittersweet (Movie Version 『仮面ライダーセイバー 深罪の三重奏』主題歌)
Bittersweet - Movie Version 『仮面ライダーセイバー 深罪の三重奏』主題歌
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf28b26bb439e68f510a4f0530724a74da74171e61a5161982c4ca1fcc44b7bf. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/JPB602200647.
Rewrite the story (Short Ver.（『仮面ライダーセイバー』挿入歌）)
Rewrite the story - Short Ver.『仮面ライダーセイバー』挿入歌
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e5c910cad262ad4fb91f96ae012d390fbd503de6eba0261a56bd510b61373d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPB602102157.