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 0xcba9e38c2fd53c53bd6bc8d0c50bbbc2bdbb12091f71a00fb04f7506921a6720. 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/3a79045e-e508-4642-8984-c726f69bd250.json and https://artists.proofprofile.net/proofs/artist/3a79045e-e508-4642-8984-c726f69bd250.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
TVアニメ「佐々木と宮野」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 0xc53db65bad3cd01e40beae0e6dda36685887ed0ed0308b091b896bf5c0b936ed. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/JPCO02202510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538e34b3f211c594c966d8aa37cfc3a2ccb44fe8cae7f354f033ee7de9ecf0e5. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPCO02202770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5876c553b8959b2f013192397d8a2c2862b367bde2d1764a8bee8f54e181ca84. 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/JPCO02202670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa581374faa9444be43e20ca0df3598b68fb0557438ab09e561aa1a42b7eeca30. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/JPCO02202460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776fc169aa3867ec3dc54350219bfa91c2fe1aa5cb950b2f883b7eb665852442. 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/JPCO02202550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfa9df6018933d190d6ec84c8b8e47ca34b7833666770be74f628ca1e80e6a8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPCO02202470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226dfb3a8107216868637f29ccf14f0abb16eedf19ad8a72ae707a21de4a1a7b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPCO02202610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863b0afa2d9e0f9eb0d90e180307a7002a7cd5d02f86774b2d7b624734372710. 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/JPCO02202450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeba7699b35fa7fa549fdb72b4ccc61110d0e0e9d4b0fb35291c446071d5836a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/JPCO02202530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804b9b5a30056ba396f5776bbc49919254ffddbfeddaf5662aa880c9f46d89e4. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/JPCO02202750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd34c4e9500fb4aee6ae7c8f93040b3d95896e138b2dae61195bfd8610ab530. 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/JPCO02202630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c01e0aec3838deef806d119b1c2e6116ebe0130aed6d4a7378f38129bb611c. 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/JPCO02202490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb541eda407eca794126c6670f87b78b06dd2f189f0f9ecafe610d1d55b4ee3f5. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/JPCO02202660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3370ce1d9581fbbe2ec302d7ff3a49f06c7be9275abbfc0e8f1c9a04076493cc. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPCO02202520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f3468b236521e55e86c84934f7b71c2bcb741a07769b33160d15d598439ae1. 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/JPCO02202680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bf6a003506333d56c03d423be44c60d36637c65c2963f0be935a3566e7cb12. 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/JPCO02202730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879804714880d8564cccfe323656479dd65b4a84872098c6a70f4164123791a2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/JPCO02202700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ad20d87348b52300ca50b46bdef7805330ca293d2084e43dd58ae7def7add7. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/JPCO02202720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0487f8b5556228f515f1dc4951d53f05034284b476592926a6013e98815853. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/JPCO02202740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f25f74778f4ba99382b6732bb36482666cddc2efaf2f53315713ef4bedb90e0. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/JPCO02202430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d58070172d631f9967442b4603ad67b8baaa806c16c4c1e505ac53ba7ece4c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/JPCO02202600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c898492ae1704332d4bd9de005accdba49216420d46afddc7ceb22982712243. Chain 2 (Bitcoin): anchored in block 957723 (2026-07-12T15:34:17Z), 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/JPCO02200990.
映画「佐々木と宮野－卒業編－」オリジナル・サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb2b55d5f65e5b08275ad6afe7d2a99123a099192fbabdc3dfb2107180911ce. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/JPCO02300730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6078019c0ffbdb9c9a30110ed03e595cafe07adb7d0af83a3b6195b31767cbc. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPCO02300820.