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 0x54e2cb101bf1ec4b67dc49610bc3fc97ddc608dc557162a7feff4edce0b6a5ad. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7719831f-2930-408d-9e5b-9bed7222903b.json and https://artists.proofprofile.net/proofs/artist/7719831f-2930-408d-9e5b-9bed7222903b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
映画「ハニーレモンソーダ」（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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede7d0d1677e58f8930002f06c2ebc59625c85b55bb1442774e325d450abe995. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPZ922105776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b01dde9e9383a5d6a531b7c843e9535415ac10e3c661ef15aaeebff116d177b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPZ922105789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27885e7bae91409dd3fe4102188381b56cb2c32886f1288482f335a7791d6d5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPZ922105793.
映画「ハニーレモンソーダ」 (オリジナル・サウンドトラック)
『ひろがるスカイ！プリキュア』オリジナル・サウンドトラック２ プリキュア・マジェスティック・サウンド!!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e7674ac420d6fe94ba7a74c1c8803733785a4e8a6258f09f6fffaca88d2bf2. 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/JPD602301962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfbaf9eaf57ae3091436c039aacfd7be8336836f6505afaf7dc4f478012ab62. 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/JPD602301969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad68194acbcf7c0f1745e6b3e191293aeb85bca180d4bde43054ff568f69326. 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/JPD602301970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5684d8946afc6064588668745d4a7aed1e85fc1f51a2debe0c153fa4ad6bd1. 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/JPD602301981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cefce9150d1504c109b7de54bdabf44be76c65faf7d838ba5ba53157b503a49. 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/JPD602301988.
プリキュア・マジェスティックハレーション！
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a87b7f51f74190f9a7d7a36900992c52be3b13970d6295a713cd91f5c481f76. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPD602301997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6097bd62fbc468c5c8df29116e74cfefef721d592af385aec4ca360f8ae47d. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JPD602301998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990d2b8a1045d74031edfd795f3bdca18c1f07e52fe44546b824c5a29b6cf73d. 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/JPD602301378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714eefde7843f5db4c57520eec0bca583caecf38c97dd42aa1f25c851c6154dd. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/JPD602301963.
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 0x07c245c58b707a6fe3209ff187a1b83b84e41c7db0a7fdb7c86b3d995962907b. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/JPD602301964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49270054c84b026b8a7b59f34b406efca4c34ff018ff55fbb013e33f2b1cda3. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/JPD602301967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1037516ebd78629befcca72e8a6c7a70e84d2fc687f32f3d61e26594b0d9f423. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPD602301968.
プリキュア・タイタニックレインボー・アタック！
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38517ecbce523e18666d60eccaeb1d4cd2d0dcb7974cb28accac609a32fa8ffb. 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/JPD602301971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb77ad0280060b7ab75bc83a1d10f52da0a1c6e8da42533e426e9c743b10ca3b. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/JPD602301972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb279515bfa3f142e20e8b8907bddf5460b060b7cb14c363433c799de3d706558. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/JPD602301973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838d164dcf24d04963df8e0d3af13ac232e08bd31a584ce8f4c127cc98400224. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/JPD602301974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4ee4acfcbc73052f61c68d3fc243e698cf222fa8bcaab26a06873357003b9e. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/JPD602301975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b942c4549cddbeda67f400385ec6009f69f8b4c155a53f1c0e712defe2d9235. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/JPD602301978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b82a7239adc1b80e4370eb52b585de315f4ab2823ba69b05f0a8d0667695758. 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/JPD602301980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765900dae324ebb69c1e31ed81de2f4bc19c4ed13e1846a3bb28729bbc8d68f0. 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/JPD602301993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90cb73a7826247e04d0317c3ec903425c275ceac2d3e4e5b862c20788ade078. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/JPD602301996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1697fa0e836ca402af14c33ed77cb7ea140d9696354745a7b41f59ec382957. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/JPD602301999.