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 0x29284687a41012690f5376eb4c78e576d83e595c21342b36077fc0d8c1279397. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63d031a1-2179-49de-a6de-885e554a881e.json and https://artists.proofprofile.net/proofs/artist/63d031a1-2179-49de-a6de-885e554a881e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
劇場版NARUTO-ナルト- 疾風伝 ザ・ロストタワー オリジナルサウンドトラック
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 0x584bc60fabacbd17ae2e9bff0b7b930eca8fca9049a332674f1a7f20c1b1342e. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/JPE301001781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf2ab0fdfe97e38fdfddfce30fd4531cebd6ef09bf83c9f2bb32dc7d439be34. 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/JPE301001782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1305a52c0f2bb3e400d08d4d68751046d4a888e6c3cf3679a79398c2b10dac. 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/JPE301001783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc817594b0d538731412e330ef9e2584123ba4bd0bf3d68fa0fd6043c6e5b4192. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPE301001784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8f1e67758b665e8f5a52e7b62751fc244b240eeea923e2feacb2b3e0df290b. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/JPE301001785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ba48e162c505c2204e31f6cd1f44c21e0342ac3300e1c3bd13dd3aeb35c290. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/JPE301001786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16492748a68bf72dfbdce84fb8fed59d969130ac952437b8b69abf2c126d20c6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPE301001787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2761d174398a36af5b95785ae34163a79941cd39a57df01ef5bb1e77d1e3113e. 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/JPE301001788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee48f7841a91a2ac037b22e55d44d80f60242d939a9e3d76a67f9ea5011e5cbf. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPE301001789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123812ecf93defbddb794e9060e3c2e41db9f1626b3341c13a377f566511dfd7. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/JPE301001791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf799a5190a6b25850da11b4d341db5816e84946d816d51f291a8b23553c6bde6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPE301001792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcf7ac5d61b309bd946a813a6bfae49c50378e66a6da59651d37cb2fca29a0f. 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/JPE301001793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958daf3faad98c0fe863ada7eee639fb7b88a77fd2f2b6bf83bdeb6173666762. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPE301001794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492ba75b1ab1d6896c383bc06daad009895aadb9f25ce1030abe8357c9d943b3. 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/JPE301001795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c10c770b3e738062380e91cd9c004761101d2ba5b888b1ac596685ea4711f64. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/JPE301001796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec66436ba26117e376e8902f34c5dcf423479285ee4806c432aed0b42283255. 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/JPE301001798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b39815c80d8718d20f90523d6b150257e30a9072a077e28cac8a434afb9de3. 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/JPE301001799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96530e686c2c060ec72b8bf0af8c6678cdb0cc3a6848f7aec392f4c1ca45b590. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/JPE301001800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cda27e4cc1e70caa5956ef252be0c11a30b9061713467ef8645bd5ac4b8787. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/JPE301001801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3614c18c812d43cccd765c8783849e71ec04fd990a07711f68d0b3f9655f90. 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/JPE301001802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39791e95cd510482f71789292e361c57b3f90afd523998ffe613d640afeecf28. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPE301001803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77e683fd5b87b5ad570f407d64ed7680f8e5e801fc712683864a4881e0c5020. 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/JPE301001804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e2b1a8f25457c38b3edb6dc4733f4c1978ebbc9594af94c910b013849b347a. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/JPE301001805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a957d1765f84103d1fee59b29fab2d55cdbc17d0b10ad2471f4607623c34c0. 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/JPE301001806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218aabe301bb02a44cff1d6662f9ff655c1376c29d1dae4d3109af96c3caf756. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/JPE301001807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf3b412f8882c47a74dc3a411c042cff277549be6d86085844ce1f1952c4f32. 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/JPE301001808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b73b1f6019e8715a188631b635c60098f06e8feacea93a24a0bbbd2ad9feaec. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/JPE301001809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194296ec0a6fca0e4c01442f2ad614002ffcbcadc237944d04a6b55dc408e240. 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/JPE301001810.