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 0x62fec336a0b786deffda0a75ea4a11faf2e2f20f7ac46c13de94c9367c8d7cf5. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5bfe69e-6e6d-446b-88c6-a20d44deb225.json and https://artists.proofprofile.net/proofs/artist/b5bfe69e-6e6d-446b-88c6-a20d44deb225.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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ミュージカル「忍たま乱太郎」第9弾 ～忍術学園陥落！夢のまた夢！？～ オリジナル楽曲集の段！
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 0x068c535cd89882bd931e5dc5d14a5f5b5b5059e73cb9a84b71258ceadf3cc166. 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/JPR502301124.
ミュージカル「忍たま乱太郎」第10弾 ～これぞ忍者の大運動会だ！～ オリジナル楽曲集の段！
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd141c69e318eb6623d89d390e1e3c5b401e84ccfcad97b33515b4dac38f567b0. 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/JPR502206387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6dfc7c921a0cd2b3eabe92531fb5a22888787631ff583d77eef65ee49bedec8. 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/JPR502206397.
ミュージカル「忍たま乱太郎」第11弾 ～忍たま 恐怖のきもだめし～ 劇場収録の段 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a275b573afb5147822ec8a4badf67b3031391549e0491a92a20b58e480d82c3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPR502206367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d5b413916265eeff8088e4bf285bac10dedd5f0382a9c3c93413e63a7fbcb8. 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/JPR502206373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5797ce72f137c5b51dc000a89c21912eaed182f63faa1f4e5d7ea90aefc21800. 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/JPR502206380.