1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x3d13e2baa31a811ad43c74f9125aaa33572bcdbab5c9ecc9970edfc2bdec5db5. 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/9e2f6791-69c5-49d6-8baa-7650d9232fbd.json and https://artists.proofprofile.net/proofs/artist/9e2f6791-69c5-49d6-8baa-7650d9232fbd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
一年の詩 ～吹奏楽のための (全国大会金賞 Ver.)
"Sound! Euphonium" Best Theme Songs Collection Wind Orchestra Ver.
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 → block OTSBitcoinBlock must exist at that height 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 0x7d87cbfeb8ceadd7bd54b6bb583f473cf5b5cf51c161b08dce1fb989caa080b6. 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/JPI101500913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2103125e7c4def4b052b4b8bc8540f660f474fa1d858fb4996ff56bfadeb438. 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/JPI101500914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8548e9f5077b6e3047d555d782a7595fb30576f3316d19c6b75dc5972d17f5c0. 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/JPI101600587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144c09d1cb74bbcebd2dda6918d0aa13141c59d52c096d90e20707fa2742fb1e. 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/JPI101602606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a158e895e8c4ae84cc5450913e2f38737bf49a21354e6cad22dae90b67f1d8b. 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/JPI101602609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ba8dc60dec6026dc7e06e0a2e5ea6f669b2187b401209a1529f2dac6f71fee. 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/JPI101900827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bcf56d89897c37764804bdeb46f75d4aa94ef789072b5a31b39c497eea8611. 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/JPI102401759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d41b07d4ea69a42c30707b73e7bba3bbf536e66a2c077cb23d38a157a2ff97. 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/JPI102401760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c0e4edc58371af93e397d9242058226c968ac8b4ccf6364c6e68d32e35873a. 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/JPI102401761.
リズと青い鳥 第三楽章「愛ゆえの決断」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d1075ed5c20ee755184d737a542e219a2f417ad3b1644b4acca4627449ddd2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPI101801198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b0d1464e1920581560d5e7f61df9ddb4f164492345a4b5d044e271762d81d1. 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/JPI101801200.
リズと青い鳥 第一楽章「ありふれた日々」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92bf8b4bc5d7b2bbd20bf2f93a592491803e6b8cd6226af333ad84c4ba78df2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPI101801196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486cffa56e8723987bf95c8140cc0a1c0d8e96220eca58c10825f1c7ee8f1089. 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/JPI101801199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55d4bcb2543af4a41df1a7154f08a9a890f71e9fec88eaf5ac25686567e7e67. 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/JPI101801193.
リズと青い鳥 第二楽章「新しい家族」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562871395aa77a2281ba1af105b3576e5260a2e0452c4bd1ab145172421168b9. 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/JPI101801197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26048c61fc676353487754d5b6c574aff299b6a484678c21fd71d1a3359f3867. 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/JPI101801355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd67075a7142df026d3dee9df4cd043cbe4dfeccf5af636c0b10f437b843edd9. 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/JPI101801194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67398aafdd141256ebc2f4516a3cc5fa7ced16799eeadcdb5b7256c77b955e9a. 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/JPI101801195.
TVアニメ『響け！ユーフォニアム2』オリジナルサウンドトラック「おんがくエンドレス」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52ef76fe02e8cf5e8c713fba003896411b9a434afae1a876b85dc4bc82e049c. 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/JPI101602593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e6f46744950464f6ceb3d47efe481f1c41f7d6db9ee96a96ab5208d925be03. 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/JPI101602594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9c69926daed3f1f548fde727ab10564b9622a88a3d07736f41723c855017ad. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPI101602595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c264659e514f4d495aa5835d603e8bda57780156197e3b8b9e2eb647f3ec453. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPI101602599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1f9416ba8600e8500d7e0c69a769743d7d7af6ddd5a2e4161c7b22d982c9c4. 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/JPI101602600.