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 0x1c9bf8db4ad90554132f4c082007fdcbb64c7ffa4139f7a385a1c310b9ccb2c2. Chain 2 (Bitcoin): anchored in block 953783 (2026-06-15T12:24:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5991cb5-b4b9-489f-aed1-b9f4eb574102.json and https://artists.proofprofile.net/proofs/artist/d5991cb5-b4b9-489f-aed1-b9f4eb574102.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
「ぼくのお日さま」 オリジナル・サウンドトラック
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 0x3a078ce9235f5813868de71258073cb2c754729685d70f69c0516f8581c71211. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/JPZ922404051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8183f007d02c83cf847e9878b2495539899d72b23dcfc976b4104986bbc33a99. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:24:03Z), 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/JPZ922404052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcabf926bb8b9d378e5a8b1c88276834912083dc7961b3e06cc07aeabfd6eb4. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/JPZ922404053.
タクヤと荒川秘密の特訓～ぎこちない「月の光」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca2f36d58e57c11bc96e6c67a7d2c1b01ae11b208952783efca7591dbdf46c5. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:09:47Z), 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/JPZ922404058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153b1677d4d678e9657317e7310f034d77e930b98d8c6627e0cc0e3aaa630e1c. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:23:35Z), 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/JPZ922404059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef528d6506a2cb42eee2f4cb9e6c9104f812f646b0f9c79456d84a7a56618d58. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:07:18Z), 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/JPZ922404060.