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 0x6b1526ee68b7d28ba8eb6c6f275c3aad2ebbe0ccf789c875445df2bd2ce8f741. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5914156b-3c40-431e-84bd-0d5985194b83.json and https://artists.proofprofile.net/proofs/artist/5914156b-3c40-431e-84bd-0d5985194b83.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
あゝ軍歌２ 還らざる戦友～散る桜残る桜も散る桜
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 0x53863e710af2808c155a7976dde0cccba1761017867cdfda709ff2b2555e2a08. 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/JPVI01236400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd31838cc54f29ad01ad56bd73a1dd719167b34e7eadd5579fe0b9ec042f9964. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:53:42Z), 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/JPVI07402770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf80395a0b26d11ef827fd67bc523dfeeab52bdcad08d202135263b73ce3ed2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPVI07402790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71939f624fe56781fe6180086c5c97ff18224e4d3134a0beb1358038460542e. 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/JPVI07402860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d6eb042ff5a85e2af9deda4b00ca3bd25344558f107a7ac9873b5f66c0b58f. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/JPVI01236390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621459567a718e949db90d4a415e253bbfaecd22b2921bba1908a2c2eff2f7ea. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPVI01236380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03dce76722a88c15ba8f5f7e7f693272d395709ec42f6ac5b461778d573abe4d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPVI07911580.
あゝ軍歌１ 戦友よ安らかに～たんぽぽの花
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc413c2b8483865dfa99816443068bddab967cdc36ae4ce22613d4d09d9079d3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPVI06902890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00cc5cab99f445303c1ff23b3d4b13820e557b70db76a4ab782c88eddbf7a5d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPVI06900910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c80c8e2150492619099b94afa9af8f97efb7d83f8c6c0fd4e8631b9676ae21c. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:40:10Z), 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/JPVI06900870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8d6d7763ea951891851e8b9caceaf9e74e361d35d4a43ba5ac1d9e2adab2e5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/JPVI06900920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375d503ef6d09ad2be93c459bf29e65c9e4aa4bf3e4323e09bf340288496818f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/JPVI06900830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168e782b9c05184d227ebff82214c95089c66ac10e89cddcb59fab1d93176b6b. 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/JPVI06900860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c6e996692a232736dc6f14c01ce9e9902fb5e6bb921b0cd82715e1b06273d3. 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/JPVI06900880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0731f8d95e5ea5e89d4bfa2a6bf7a7dc0fb98923c20b9ae31d2f26d0b5fec0a3. 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/JPVI06900900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c21f367beffde97e290e2c82b0f37fd1c1e193a90354c87ba03ef9d4f973a75. 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/JPVI00931700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586d112322b3e526b800a5352ef2703752f4ddbe1732df92a99fd875edd5faa3. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/JPVI07709000.
鶴田浩二ベストコレクション 3 国境の町
Koji Tsuruta Best Collection 5 ~ Yogiri yo Konya mo Arigato
鶴田浩二ベストコレクション 2 傷だらけの人生
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fdb8fe899302dab27171c1d4e3857a5f62f73319eac1477326a28e1d6da310. 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/JPVI07101400.
Koji Tsuruta Best Collection 3 ~ Kokkyo no Machi
鶴田浩二ベストコレクション 4 ゴンドラの唄
Koji Tsuruta Best Collection 4 ~ Gondola no Uta
Koji Tsuruta Best Collection 2 ~ Kizu Darake no Jinsei
Koji Tsuruta Best Collection 1 ~ Aka to Kuro no Blues
鶴田浩二ベストコレクション 1 赤と黒のブルース
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3897bb920c1b371ecbb440755a0ca836d81ce46cf848e7af6b33fbbef9ff4b0. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/JPVI05300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e778e1ec5896f09a0be9c03e7f15405b622b01364de6ed8f06f2704bb29cfef. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/JPVI05500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5aeba93c532d63ef742e129c97c65070006f5436a24ad6ebec41d120f6cdca3. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:05:45Z), 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/JPVI05600060.
鶴田浩二ベストコレクション 5 夜霧よ今夜も有難う