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 0xeecda6c357ed889076845be108f5456565d792bbee49d962d92b0f9ef3f196ee. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7fd9e95-1814-4c06-b54e-b72f22c7800e.json and https://artists.proofprofile.net/proofs/artist/e7fd9e95-1814-4c06-b54e-b72f22c7800e.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 0x72bcf38081efe33ce1bf9f1c30fdd9b85c25545a0808dee1edf57cd987d23b07. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPKI00021260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd870a7aabf0aacf2c8fcc18ea9577cc3a43c0f544e9f68b608b7c651c21d4bd0. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/JPKI00606151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcea31b9c56eb84094bec50e598de25d24770692086cae21b14c144e7b4c99c9. 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/JPKI00815825.
男と女の物語～昭和ムード歌謡ベスト
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1425b4e2d3d590f9672d28a08bb4c56010799723379ebaf33e103b0b0e7f26e9. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/JPKI01815616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70be3e4bf517f12c71cd07208b9ffd91319d40f4fd71594fb1ff1f465006f455. 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/JPKI01820152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f1becc84795c7e832c896e59a164095b6b857da9dd1ba87c6e6c515263a6e0. 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/JPKI01913774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb967f7cb2318a879d646c2bb048a9fc1997e58881b5d7d45a3dc7272eaab4aae. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:35:48Z), 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/JPKI01913775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995d30dd83a77e97d274a545561fbb9930f9bdc7ce491a251fffee3fae0d621b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:52:44Z), 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/JPKI02113742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04858f5dc81ee60dbea7728a46fe9c15342f00a329cc6245898f7b2e04e5e5fe. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPKI02013114.
忘れてあげる (アコースティック・バージョン)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be5d2b9c0f5409cf9cea7529e61970aa268f1a1d08db731a4fff9468a3caa4d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/JPKI02114446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4f055266ac4f19d9424d2be01be62abff3eba3099aaad65d9112a0596b630a. 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/JPKI02212781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976b3ab8a1d81a676f612884b411a62165389337f0adb696a3ddd207fd5b6801. 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/JPKI01719156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fe296fe2608083f876e5f8d2c43d238619f5bfbfe358c2217fadc99c3afadb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPKI01511711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6529cb564619fa0a9bb237a3e3e3ed1a517947c7076369b4ecca1ac8f58c1330. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPKI01412780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe011b958f1c00ff61cf61ad747fa1b5c01cad403210edd26a02f76856bcc9695. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:09:04Z), 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/JPKI01217410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c73454ea5b71a7d9c815c3b6d964530151107bea7737e1d38b63aa0858b247d. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/JPKI02312283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997026e56190b2d0155218129d1ac068ffdf982d96c142f87a10902e662ad0c0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPKI02312284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374b8254c1bf76d01d18dd07887d2c53b47d94f6c566eff0bec12de7521f8b8d. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/JPKI02411943.