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 0x661905a176af67462978c8613b97aa4b3ac62e3f120afca59eccdb6fc0c40a26. 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/59876290-b968-4e23-bfa1-3d48737fec3e.json and https://artists.proofprofile.net/proofs/artist/59876290-b968-4e23-bfa1-3d48737fec3e.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 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 0x94fb183ee4938b6e6477f344d9e13d6a8040e0a2bd803fbb45838f82ae3b3eb3. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/JPU901700770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ceeced65f5fc78441fbb135794ba903634379d4c76bed391e45af4ea471914. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/JPU901701275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0571aa18b4a6154a0d8d512c08b0ba070b3babfcb3e8906af5c556511e987a. 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/JPU901702098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0571aa18b4a6154a0d8d512c08b0ba070b3babfcb3e8906af5c556511e987a. 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/JPU901702098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd56bd20a56c591eadae575ff75324965277634ab50b17e7da126332b44c2d8. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/JPU901702099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5c3f75566508076a94c221de961e4dd64187b4b39b1b4ad2ee8343fc9602bf. 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/JPN001700243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9386347e1448e392eb05e550c93d3d222ef57ed6114e88637c7def123fb513cc. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/JPU901704010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9386347e1448e392eb05e550c93d3d222ef57ed6114e88637c7def123fb513cc. 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/JPU901704010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d88c503b2fe4e5139f2c24b0a3ceea12bdf1fe3548042e44990119dec76e37a. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/JPU901704011.
ピンクのアフロにカザールかけて
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd846577f31ef6ea4dda4da1ea51ff33a63a37d7e79eef34d2f2d54f482516ed3. 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/JPU901800504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7ebdb4a4e7f5404a821a4a3648e58d35a29a16b6885c88363326c9502c2bf0. 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/JPU901800503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088a55b09df6422b9913cb4fc65249278ef7118600e26c467e566e56e6d27628. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/JPU901800506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0571aa18b4a6154a0d8d512c08b0ba070b3babfcb3e8906af5c556511e987a. 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/JPU901702098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df76e47eef10ce93a64774eb31e448a0eb045b4832f01ff4e99874e109885bd. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/JPU901801742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d89bdd4efbc092a07b49564c1f6ef41c3a90ea463125098ff8cf7b4d5d8a48. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/JPU981901617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc753d9e671aed60e3099bc258f375fee1760c836d66c5e9df8a69912b36450. 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/JPU901901375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aaad5273f5cc1bbc193bffb208d6ce0f54d9f0203a54a89db3a46917f30b7a0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPU902001791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835958cedca6200f3219c3768ac9c830e427e82bf715b0ab07432dd17843fdcc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPU902002558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af23b0509f380ce54da7999ce815b48ba33676d8ba1dc30fd7f4dce44a1b2a8. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPU902104391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca91f5ac360e6a9f66ca757aa4482fd91cfd0d4477060b6209956fa35819d3b2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPU902203348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ca8676c80335b0f6df4d2d366ee66b3977c0895723c97a47da371f47492a52. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPU902203349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a0bdd5d9c74ad86c9313f8d0ba463575d9e60e127d35cb6bee9d45e78f7b1e. 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/JPU902203350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa183947d24d612f3a9c1b57bb61a8cb5b0fcdb4706c89070c14f3de34659925d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPU902203351.
NO BORDER HITS 2025→2001 ～ベスト・オブ・東京スカパラダイスオーケストラ～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e5a039ae5d5b2070cf637cc3bcd2a784b931c2a05056b2ed1be1dd7d6dff42. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPB602500329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf208cdecbbc5d4c48b1ac9fe5b004af3ac8123db97e1e5c816457ab80ec7a50. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPB602402821.