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 0x25a6a6abc61fb8a65612a8ed16b44c834c5f0a3397c06093067152ba44fe8e1b. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f83b65a-13f9-4695-a4a2-f1f685fd1d9e.json and https://artists.proofprofile.net/proofs/artist/7f83b65a-13f9-4695-a4a2-f1f685fd1d9e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Slow Starter (TV Animation “Narenare -Cheer for you!-” Featured Songs)
Cheer for you! (TV Animation “Narenare -Cheer for you!-” Opening Theme)
杏那・アヴェイロ（CV：武田羅梨沙多胡）
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 0x3108e3aa4f8ad8c05bc72c041ad0f8e3e5769f28d781d089927ff748b6d5ba40. 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/JPW742400028.
with (TV Animation “Narenare -Cheer for you!-” Ending Theme)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2753f8346f80f3f7f74d5b42aeacc3080b8c52318afc05c79cbcba25630b407. 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/JPW742400029.
YOU for YOU (TV Animation “Narenare -Cheer for you!-” Featured Songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f03efdc7140a71d7d49505cdf1cb558a1ce113683f341e7cd48c920e11ba48f. 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/JPW742400031.
FeverFestaFever! (TV Animation “Narenare -Cheer for you!-” Featured Songs)
Be Flowers (TV Animation “Narenare -Cheer for you!-” Featured Songs)