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 0xf2391e318e7ec51fba8fb92be715040e472125aa1a48442f9703ebe239503c7f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1ca0cec-e007-4808-82d0-bfac053a25c6.json and https://artists.proofprofile.net/proofs/artist/b1ca0cec-e007-4808-82d0-bfac053a25c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Oda Nobuna no Yabou Main Theme OP "Link (Tv Ver.)" / ED "Hikari (Tv Ver.)"
織田信奈の野望 主題歌 OP Link(TVver.)/ED ヒカリ(TVver.)
織田信奈の野望オープニングテーマ「Link」
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 0xec9afe7693a950eabfd9ce0ffa9992586337fa9b770386a635b6d50200bd7fd7. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:25:36Z), 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/JPPC01201745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9afe7693a950eabfd9ce0ffa9992586337fa9b770386a635b6d50200bd7fd7. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:47:56Z), 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/JPPC01201745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3780ed8828cb78067ecebaa5605d8e99333743f9e571b5fb746ee24c510f8ff0. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:13:29Z), 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/JPPC01300189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9afe7693a950eabfd9ce0ffa9992586337fa9b770386a635b6d50200bd7fd7. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:54:38Z), 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/JPPC01201745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9afe7693a950eabfd9ce0ffa9992586337fa9b770386a635b6d50200bd7fd7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPPC01201745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc61825e320ec7413f3bee687a99bb6b9696fea03985a9417dae73f3f21dc743. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPPC01100440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1972b2adc3b72c9707f579215840574571ba60df4b452bb1db2df629d61601bc. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPKI02110940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cba88e242f7db2446d8be2d8d91e2b75a29966b1c7fc647dd56197a7a3753e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPKI02110942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6e42e212214d38406a2a1bffd9476980543b11d141dfdb420dc6baa261f4bc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPKI02110943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c6208fb5df1d2af8417956ce8a44b76af5814053f9dc0464a8b47a203efdc6. 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/JPKI02113141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc32d34c7b1ec763ecd85b24214f4dc4994b3bc0b6b631c0d352edc4a9b91c8. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:53:38Z), 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/JPKI02113290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a176a99770f67e18f34825ce152e5dfb3cfc857333a76038ddb4edec972248d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPKI02113291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ddcfc5dc9f0739983cbbd484fca2fa3af5f513f2ef6f2881942f54bae58ed7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPKI02210814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5736297936efc87868e0818ab5e3352ce4ef41dbf30c638b61c9fcd1480005f3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPKI02211488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d09343ba99d657c3c97c0518096090bdecf2fd8b56168ef510049108b5a1559. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:29:25Z), 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/JPKI02211483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aae949b60714e4345aade86c95b38dbfb2d7ad084d1baa7917d7103352e47bf. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/JPKI02211485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cba88e242f7db2446d8be2d8d91e2b75a29966b1c7fc647dd56197a7a3753e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPKI02110942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1972b2adc3b72c9707f579215840574571ba60df4b452bb1db2df629d61601bc. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:06:53Z), 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/JPKI02110940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7821492865983ddd69ff96ae1e6fc780c9357830eecd91e7a01898d35029f485. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:52:34Z), 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/JPKI02118197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ddcfc5dc9f0739983cbbd484fca2fa3af5f513f2ef6f2881942f54bae58ed7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPKI02210814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bec7535ad144aa6f3dcd7d812dfa093950477463591ca03bad519f1fd2a83d. 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/JPKI02211489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35695bc1267c7aab871ddc6b3f991670af366c692d81bf5a52892bda85d37d1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPKI02312738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3b8f918900b68280475c8027c0ce3dda267abf0cb820d9f8bcba5ba7b6a2c9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPKI02411838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd4a49a138535c28a0b6ea301e0566f57c1505760e04ec1a2b6fb174366ed6e. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/JPKI02314012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c444786ef29b98d52840b98f086da6731801138a5edc2e2acd6e585dc09b46. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:49:35Z), 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/JPKI02411839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5525aa6b19990e9d7b9829267475f778f26370cd9490f2b3d2c21cb43128ba8f. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:54:16Z), 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/JPKI02411840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1424ab07e4f453a99fb86fc4fb339005f08ea9664d3d3d632ca6502a3e520e73. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPKI02411841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35695bc1267c7aab871ddc6b3f991670af366c692d81bf5a52892bda85d37d1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPKI02312738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceff77790c319ddcd2ccb79f25b169975b7950a3fa75432bf8d3a781a6007234. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/JPKI02411842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38bf0bcf12abe1cdc90216844c6d28c3f89f404fdf19c078674e9cf235011d7. 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/JPPO02001205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38bf0bcf12abe1cdc90216844c6d28c3f89f404fdf19c078674e9cf235011d7. 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/JPPO02001205.