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 0xd238ee06e566722105ed7053592c7de19d34a65cd33b9990dd5b1cd30dd59ccc. 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/ca619834-4b4a-48c7-b81b-03c96b9600db.json and https://artists.proofprofile.net/proofs/artist/ca619834-4b4a-48c7-b81b-03c96b9600db.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 0x945a9a0bbe6f63f5350fd9572940e4a8ae7b6c9c74663e3a865dff72c19c77fc. 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/JPVI08303650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb316672fa4d36c239092b017c66eddeda24d2aec48f7c1ab3233cd74badc4ea5. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/JPVI08204940.
SKINDO-LE-LE ～From Jazz Funk to Brazilian Fusion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1c0f65f47712783c709a0915b2502c55a6100d5238ecc628fedfb642d1807e. 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/JPVI08003470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd534d2d1e4bb3c29d34b44fa8cc2532d17dc0044e9e7b4c60fde652749c5483b. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/JPVI08103800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c350b3e87870cbdfc80158ec19bc3ae359661a29e9b5c6d4403361f98a41fd. 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/JPVI08105490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3765fa565e21b4e16938baadd31fd659469ee1ee13e93f98bf0c0b1eaa873246. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/JPVI08105500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cefa7d6921e75565ea2a0d3471be62800c9f7fcc88ebb65839d71e34f77ebd9. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/JPVI08105460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6529f5a1b0a4de7949ffb118bf0a72278af6f9d03873f8981994e9af2e62e28. 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/JPVI08004560.
＜おとなBEST＞Yasuko Agawa Smooth Latin Best カルロス菅野セレクション
阿川泰子セレクション・スタンダード・ベスト RE-MASTER VOICE
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1c0f65f47712783c709a0915b2502c55a6100d5238ecc628fedfb642d1807e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/JPVI08003470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2193094de237e9ff5a8120a47f54c79f77c8d962ff348383de48d2a37a53c480. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:21:10Z), 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/JPVI09314490.
クロスオーヴァー・ナイト ～アンチェインド・メロディ～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358554df9b312262159cc1b60861c581cc3f5d47ed0e1aadb8886c3a92f7aa77. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:50:29Z), 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/JPVI08804710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20548de0a882aaa08a4d41961a33f8255e3a7a0e9316d6b11a57114812d604ea. 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/JPVI08204970.
Yasuko Agawa Crossover Night 2019 Billboard Live Direct
DIGGIN' VICTOR (The Compilation) Deep Into The Vaults Of Japanese Fusion & AOR selected by MURO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65574133a7cd59844c48ead335994e3eadbf59ff0362ad9da1e12f7e09523bb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPVI01840920.
DIGGIN’ VICTOR Deep Into The Vaults Of Japanese Fusion mixed by MURO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca010c2c8feba4ff359bad63c40d701cbdb9f4d1e2e121cb71a062fb91f2dd42. 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/JPVI08409240.