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 0x31aca04c8c85ad095fcc94a4c3c43101bb8514597a1fceb8864450b6c7eeeecd. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7adf143a-350d-4079-911e-dc4913163dc1.json and https://artists.proofprofile.net/proofs/artist/7adf143a-350d-4079-911e-dc4913163dc1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x1730e7eeaf98892bce6cc56df47a9574eb583fa6b3e991762348c1293ddd0269. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/JPCO07711930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147f0be99b6898392c9caf240b08e99f6ec8f47675b70913e1b39ff83f03d5ef. 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/JPCO08700270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe238867b27377c384b10dcbcb4f29ed7afad744c9ff532e927cedd7e96b128e. 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/JPCO09103660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c504139ac8de673cb939d4b29b8201304250cb69e425b59502d9dd8545e18a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPCO09228720.
冠二郎デビュー30周年記念 哀愁のギター名曲選
冠二郎デビュー30周年記念全集 大文字
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0e2f5f1abffb8a6c1663d8f6ddae43038db13f1a40b71bfb6125261fd287d1. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/JPCO09621960.
都忘れの花のように／ふたりの止まり木
定番 歌カラ ベスト 3 冠二郎 旅の終わりに / 酒場 / 炎 (ほのお)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe238867b27377c384b10dcbcb4f29ed7afad744c9ff532e927cedd7e96b128e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:26:08Z), 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/JPCO09103660.
コロムビア・デュエット スーパー・セレクト 燃えて赤坂 / 木曽路わかれ雨
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e894cf0d8c0a61117b2ebb67b09a837f0b0bfea147cac9cedc2640e873344f. 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/JPCO09028500.
冠二郎全曲集 人生はふたりの舞台
スーパー・カップリング・シリーズ 旅の終りに / 酒場
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c504139ac8de673cb939d4b29b8201304250cb69e425b59502d9dd8545e18a. 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/JPCO09228720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1730e7eeaf98892bce6cc56df47a9574eb583fa6b3e991762348c1293ddd0269. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/JPCO07711930.
アイ・ライク・エンカ！ - 冠二郎 炎の演歌決定盤 -