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 0xbbfcc4661c30308c125e19f61973722ba8a4cace5679248479fa4693d2c2d5e4. 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/703c8099-b384-4f0e-b03e-804574cc7536.json and https://artists.proofprofile.net/proofs/artist/703c8099-b384-4f0e-b03e-804574cc7536.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 0x6aee79ac5c0399d0f75591a993ce32f98f11182c5ee023284b2512344185b255. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPCR08001000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6590ea1cb4c095d051f62b4515523c96cd6a6fb41c8169493ef6662ea75458. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/JPCR08001030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4012290a451e0fc59cd55bb700b219b9d86730961d6cafd3b72dcf8dcac117. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPCR08001040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4e4692c542e6044131feaa78ae461267ac849e094e9c00fec1ad93531096ea. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/JPCR08000620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf494983e3d8857e4abbac93f344a6059edaee00122cd491540f958cf10f52651. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JPCR08100640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca622f690e22df06629a8c0e6bc228d6f896e3a04ebd7296c444e60413e18746. 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/JPKI09430540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9bb3de9bc8fe7031825e835ff3ccf8039e47d38c72bd8ade06e57ae66ed707. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPKI09430560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca622f690e22df06629a8c0e6bc228d6f896e3a04ebd7296c444e60413e18746. 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/JPKI09430540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95048c39820dce071c4d100fb2335b06d582af9e55683901ac2d7c6efa95609d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPCR00101770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4012290a451e0fc59cd55bb700b219b9d86730961d6cafd3b72dcf8dcac117. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPCR08001040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6590ea1cb4c095d051f62b4515523c96cd6a6fb41c8169493ef6662ea75458. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPCR08001030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aee79ac5c0399d0f75591a993ce32f98f11182c5ee023284b2512344185b255. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/JPCR08001000.
星空のメッセージ（シングルミックス）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56826b73d32a5649798199c499524be4f62fac6ce1c24cd871e958f609e79d8e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:19:23Z), 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/JPCR08001380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4e4692c542e6044131feaa78ae461267ac849e094e9c00fec1ad93531096ea. 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/JPCR08000620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf494983e3d8857e4abbac93f344a6059edaee00122cd491540f958cf10f52651. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:27:22Z), 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/JPCR08100640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5399c4ab6f17fdc0691c03de42b3ef76af47ae78abceba379b9ad2b12e74b0. 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/JPCR08200280.
Anniversary Best Self-Cover Album 〜 石の上にも45年 〜