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 0xb5cca3512f16dd060809dac3add42467d37ebc80a08f1842b8c90584cbff6556. 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/fed67fa4-f97f-48f5-80d7-20eb9d440559.json and https://artists.proofprofile.net/proofs/artist/fed67fa4-f97f-48f5-80d7-20eb9d440559.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 0x0d901c0d1137e5409ff60ab070834bba6a21aa49a26c1d9fb23792636531b58b. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:31:24Z), 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/JPTO09820100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb605a0b472b9a27cdf2e144aa376a5aaa58371549f61cc8da7c10e157f0f8c. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:22:55Z), 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/JPTO09545860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb517d49b80a245ebd8c8fc87a2df9a9cba30581d74e13e4558f9d36542992a. 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/JPTO08852040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fdf0c5b32b3680e58419b0eb66ed0bcfce4f38e345302fa44865f171293b88. 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/JPTO08852060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbdbb808cbaf5b8c8b6f83be41287792b8a74ac1910b86c49802930dd0e8096. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPTO09078350.
わかれ雪 山川 豊 ミニベストアルバム
ニューヨーク物語り/山川豊ダンスベスト
山川豊 全曲集 -忍ぶほど雨の行方に射す光-
山川 豊 全曲集 -忍ぶほど雨の行方に射す光-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4ad29d02ae124bc68019c8ccfe9073cd1e6d3499cf98d3deca31c066f18a68. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/JPTO01101664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046688aeac792c18cea338b296f05daf5d4985d09a2592df95c6a5aed7f690b7. 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/JPTO09803020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1842fad61ff6220807244ea4202042d9d4fe5c860868397c9bb831cff1b19ff. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/JPTO01000675.
優しい女に会いたい夜は/アーバン ボクサー
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7725a664c746897b365a2cce42932370c85d7b3e7f56104d0e027d88ea9ecd2. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPTO09145380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9274968aa6120b4feda292ad593fc0e13ea82ff86e8b9f3561240ed9eee073. 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/JPPO01702676.
デビュー40周年記念コンプリートベスト
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046688aeac792c18cea338b296f05daf5d4985d09a2592df95c6a5aed7f690b7. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:06:57Z), 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/JPTO09803020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d10a2a1c833841592d36a3de980c72865fb383e069433256366c5236dc9ec3b. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/JPTO09078300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0e6f9e153bb7411e4169b324731579fe4febd0825390d3f6e3a4d90c13cacd. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/JPPO02002529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff5605e73c0245e07d7a4b67d53098ccefd931ee58e6207b2bedd1f34d9f288. 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/JPCR02302350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbd71c8313b7d023726056b44203d361e08f6f117a2f1a6f455e16b1004c16f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/JPCR02403480.