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 0x4a0df79a4ea66c70bb814659a68e093f0e1089002af892f438a54a7e79d0509e. 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/3ed3fc36-acd3-498d-9bd7-19998be82527.json and https://artists.proofprofile.net/proofs/artist/3ed3fc36-acd3-498d-9bd7-19998be82527.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 0xe3c930a7b646f65137a9bff64647f5b0ec73a8880a35b05da7c63cfc23ca2611. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:04:04Z), 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/TCJPQ2297093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60f713372d09b71e1ce7a887d3a469c4df2ce87dffd800dd2639624211d481c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCJPQ2297094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970a6ff47163cfd89b0104cec235a2c9a8165dbcaebf4b68fdab45ec611c836e. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:20:28Z), 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/TCJPQ2297095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77eae6a1f90b1b00859d9464e2d730aee13b172021ca19bc2131e2cf022be3ea. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:59:46Z), 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/TCJPQ2297097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037cc0f250294d11b627d61ababfc70132a43d87e491008aa2ee3baa6fbeaf10. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/TCJPQ2297098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5030b5bae6448aa7eab7f23746f59ab82e275222d8536bbf8f88c6150a1cf96c. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:47:59Z), 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/TCJPV2386199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5924d5670d1159a7634b82e61636f82bb6e0b3f5f391c3f4ab5c31b16c385c. 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/JPPO02301469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac4549822d306178a4aeb29ab297946ff6974b15c4f48cfe7f45b6359d22856. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPPO02301470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63997a069a7ced48abbead3c9458e7be9f19cd7ec8ac9e2b26d27952ae8b4b17. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPPO02301473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7376b142cdfec309e0275632c8ad877c6ede0e821b2eae769ed7509c6ccd43d3. 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/JPPO02301472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0785a276acffbf58b9a1976772596dbc7d1017789cd6f5d0599114b5d059ee12. 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/JPPO02301471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1b85b1bef6eaf4f7ec667bc76abb005fa65ce6a56d316156e6267b1dafc56b. 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/JPPO02301474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e93c20f71fff8d0a0234dc4b54bb0266322c29b75a97f987d53a1e6a916145. 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/JPPO02301475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adb3982dd8badfbd27b3008a3369f33ab90a1dbc393d87a9ab9ad35dc522f05. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPPO02301476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8e81814817956807a672743987c493699e61d7f27dd690df13172fc57529be. 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/JPPO02301477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a705ebc8630eb1d95ffce53ad262e66cf7434043aa11c7fdd5ba25b1638a333. 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/JPPO02301478.
Music For Installations (Some Snow Scenes, 2023)
「黄金の刻～服部金太郎物語～」オリジナル・サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5496c1119cacaff665d4862edeb2bfd89f8fe3c8707a8c6f283a6648f97a968. 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/JP92L2420080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ce06459e894603f3b53761a722831a11c905de01909032bfd6fab5d05c22fb. 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/JP92L2420250.
机上の空論 オリジナル・サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147115f68a3dbe7b87887e318fad780180fdc70cf7af0e00343c18675dcf7107. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TCJPA2439508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3184bce042334b6057979a6879c4c151c93e4cd40762e0ed785aa7ba638607d1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPA2436098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc576a3ed3989edb093d1d7d2c662d8e8c2dbed819d6714748f9b3d7b3bf8eda7. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCJPA2436100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61f5b558e89bd0495df55265fe2a36995cad998b9bde3350e7022b54e56b10a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:55:00Z), 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/TCJPA2436101.
連続ドラマW「完全無罪」 オリジナル・サウンドトラック
映画「#真相をお話しします」オリジナル・サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bb17e848b38a585abe76539f19f89e72f641a2d8dbc4327aa824c9e258b027. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/JPVI02502032.
5 Centimeters Per Second (2025) Original Sound Track
劇場用実写映画「秒速5センチメートル」オリジナル・サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5ade99c9661b49ddb3ecc5f4af6b4b67ddddbd6f5e4c2044602eb739ff0868. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPVI02502022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183de642c6be0f7b4eac3f723e38e7f4809998297591a77715bc941672060fd5. 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/JPVI02502023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23fd2704de97140daf704d7c921aeed6d73c3cde17a52af08b0f9d90d292951. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/JPVI02502024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb063e8be9afb230d56892ef6cc9c04214905bca516d5e2e8513dd5324943f3db. 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/JPVI02502027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706176a936d0440b7200d07d6b61f390684ae3e71480ec9b2fad939512cda3c5. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:44:23Z), 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/JPVI02502028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5a24c3ebca553359725e5a74221e51e9c4e18bf2612d3b6f9cb6245282b73b. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:05:48Z), 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/JPVI02502029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d757ab06229db665c8d45e3380856c415139e73bbddb2e0ddd4098c141edab. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPVI02502030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f06788525c1671caa6741c18d906bb3c15e2b436542b72525d6a4d4a9c87adb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPVI02502031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bb17e848b38a585abe76539f19f89e72f641a2d8dbc4327aa824c9e258b027. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/JPVI02502032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd05b41d9989593fc877787e0a315db938d415c2c3f8f405cb9d9ec0f20d7ef4. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/JPVI02502034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f875ed8be48580abb924332bf79ebd4700b4819515bdf335412f5d2691e425. 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/JPVI02502048.