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 0x7ba31e0593a09eedf2afe57b99698da1f738c8a4b2593b9a62527a7548ec1f86. 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/7add3d2e-3a9c-4e88-adf1-d9b4ceb72043.json and https://artists.proofprofile.net/proofs/artist/7add3d2e-3a9c-4e88-adf1-d9b4ceb72043.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 0x0ffdc9bf49d29db952c88c939300c735fef935c2875051308b60645249c04158. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPCO07037970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7999c19344e157044650465157d44ed151f19d3fa6fc6fb343f87ce81b9f0d. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/JPCO07038000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d78f5ab4897b13700a000b8ed06befe3ba62239ea34e1683dab68b0114cd126. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/JPCO07038010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4447a676df4821d80f777194295d7d6d1060f90f124a7910694fb238a7c44db2. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/JPCO07286060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa942ce3d6ad370f338e815a74a3f38998397a49e84d36922d02d20b2c05527c. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/JPCO07388840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7999c19344e157044650465157d44ed151f19d3fa6fc6fb343f87ce81b9f0d. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPCO07038000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731faf6a4e6511de94133b2314ee7fa452b813ad4f2159df80d3b5b1e37a0e7d. 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/JPCO06808380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c70b475e5c082e3bdd7bf8dcd508f37c7d15b368835f4c5d08c72640d407e4. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/JPCO07087620.
パパズ・ガッタ・ア・ブランニュー・バッグ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147bc5841beeb25e09c9d32c073edbea5e1ac1ed94e8b0533b5a665fa527d17a. 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/JPCO06981920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0c73a1d9c1676f09996bb42ffc81b76ecaf719a9aefe9c77647f6d131aea4c. 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/JPCO07479840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b6730fed84fc34bc5593f5f035b653845381de92e0ed9edbc6f0721fddf6a2. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:24:24Z), 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/JPCO07388433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8be12c632e5267a182eb8fb5c7345da4a043eabddc1a3be43e77ead5fa054b. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/JPCO07292330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203d276a21036d851fb178b19fb20f2c9c96c10e15a0b1dc6a48c54d3d27cf75. 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/JPCO07525460.
WaJazz Legends: Jiro Inagaki - Selected by Yusuke Ogawa (Universounds)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0ab8e36c41e209e75c0c3602f6d435a2ce856338e251be75a8cd7425143c66. 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/JPCO07192790.
朝の都会には乾いた花がよく似合う
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83645789773359a828ee26fcbc546a61a86c9fbb04dcacf9c237e201d313ef3. 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/JPCO07386680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa639a83df0b9f95ccc1e991e592f8d5e0b5ff5b7a59b946e5839e7a66bf826ae. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPCO07386690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ca931a4a9cb7c3cb7adcd41f108a41b729f1d4a0478dad57263e6971eaac14. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/JPCO07386700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6f11cd0911b7f45e3009dd78a30238009d99caf4dc8d214f32301acbe9abff. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPCO07386710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaca139094bd1b06d0304ab7fed8956fee02b92fc44b87ccbd12a81f36da1759. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPCO07386720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986dc1f3e53d60d958a26ae79cc55c977676e5669a048ddbc8d2ae014c2e0bdb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPCO07386730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3703f122cc26e48cc1ffa52612e670ce2c716b0206ec8b3bd0bd1711ec5d8af3. 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/JPCO07386740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf708dbe8680d80e24cc879ff477faaeee6b23c56e730af3481d4198ef9519913. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPCO07386750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668a55f7c19628a831652947cc54ffc71bf509043599636af423ab2d95dc5a2d. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPCO07386760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7041a91235f887f78891f02f19f40d2c34c6880eb3318170d5dac9874fad7eb5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPCO07386780.
スマック・ウォーター・ジャック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef37dacc1d4e7dbd7c2ffe1c0c79e6c1a5150984c594e6d5550a2e3e54e3832b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPCO07284450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0967672da39e706364d06e73da68b67502b7e800f7c952c9b380de8bb7121375. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPCO07284440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d4aa2b128bf95cec572db06bc4ea1005906026e1980cfd9dd36f5066228557. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPCO07284400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662c3596a5c04b7bf76bd07a9448aec6f32be62b69e69786e460404749bc2cdf. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/JPCO07192740.
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 0x00106c4f67653e09897c1902a7e63718f17a809bde3f89bf4d3a26bffab8aa2e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPCO07386770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e5a2c24485de54765ef88b5063f09da91b6f6c35ab6cc2ca0776f4fb2bbbf3. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPCO07386790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a957c3ec345762d0d73df0b468ac6697ae730faf02b6b2d866dbbacc37c7a23. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/JPCO07284420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3309e864be83807126195c3a14a3be7505dbc2642166b54d8c6eacc0f66ca7. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/JPCO07284390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95665a63fd14ced5fa1d6b2893eeb46b35fc01e7e8fed620b1bd3b72160eed8d. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/JPCO07284410.