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 0xd3c894b01722fd4069cd40f8181eb45f675bf57d5adc09c5b3b91d5d6022b639. 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/8bf034df-35de-49d5-9dd6-b6a2eee24af2.json and https://artists.proofprofile.net/proofs/artist/8bf034df-35de-49d5-9dd6-b6a2eee24af2.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 0xe626028f1546ef9854fa76fe946cd835d0fb3c7e50406079a97473b2fd285277. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPB951701263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed1808e8de413e2c018b5aef359d5927a216261e493fb683814144c008ce5cd. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/JPB951701264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd60715718390f8abafda53ec27bfd8adffaee571378e4bdfa25cd3e6768340b. 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/JPCO01830260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004840122d83b01faf3a2b306baf05666a63546bf5dbc632b0439d3af9ccc067. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPCO01829860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b9c0ac056dcb6e97100a56605ac20a5d9deb9d0e81626d5895467b55ce0c4f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:34:53Z), 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/JPCO01830270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd32fb4de041b0ec50dc6c038aa8a648891f80c56c705b68605b1e2ac0e0cba1. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/JPCO01830280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e8228bb46dcd20854efb2ed80462688b4f893297dad23d5283ad90cb715f56. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/JPCO01907130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d13c6806f31cc5b14f292bd918a25a7d55bb36d2286ee829fbf7606bf2b980. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/JPCO01931000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f033b8099eda9e90531102daeb7a0d8d752beed28ea1bf8e9a3670389f472e5. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/JPCO01907100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed5b1d6148b6d1d0ba8e3c7893e131136706e51bcd0bb89a55fd67673703934. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPCO01925040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb826c8b5f64a1df428a6c13d8b3a3cd816b0bd693135ef82b734277d5d2d8d. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/JPCO01931020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5b9845b44ea6295fa4214b5f9c0fd15f42cf6cd7eae1f7e751b01a624a6dbb. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/JPCO01931030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4a153928b427043e1bd5127b7cfdedc21e365951685cdc806ecd91ab09ffe2. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/JPCO01972840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd60715718390f8abafda53ec27bfd8adffaee571378e4bdfa25cd3e6768340b. 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/JPCO01830260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e038e5bc648b6def4966a8f94a93f1ed19c15c97a9ecf14902e2721aecedabf. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:45:26Z), 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/JPCO02012410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3c6f8040de9503a5f337139a6165156f2cf768056e5c2ee973a845a461d2aa. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:36:02Z), 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/JPCO02020570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f77e9ed88c8231d46960727c19efbbf79356632681688324190121d46c77d3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPCO02020600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d84297b193916d6176b370eaaff3ae8592aba05d3cdcba6fb7074ddf4799556. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:38:08Z), 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/JPCO02017670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80badc72382531ba3f0b7424c25cfea2b5bb29c8c8a47193ed328c8c3fef799. 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/JPCO02104900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fa5b5152b6b6486a883f8c5264a598534cda334d88ae704e512a3220b9270b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPCO02117119.
Original Soundtrack from the Motion Picture "Nagi's Iland"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d92eb427773cbb461730bd1da4042b87b683ce9bd03134e8718b93b0df14319. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JPCO02215170.
映画『凪の島』オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d92eb427773cbb461730bd1da4042b87b683ce9bd03134e8718b93b0df14319. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:41:41Z), 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/JPCO02215170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbd4d6902c84f16c59435552cdfbaea0017a75ff1bb6f6f16f6e1a7e6f81fe4. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:03:43Z), 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/JPCO02301480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55305e549e55209c71214a2fbd3bc890f3eba57cc761c76b8cb349cb02e78c00. 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/JPCO02332470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f87b8c14ac380bd2a96f47659013b55966fea3cad68751d34879946836ec12. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPCO02400240.
TVアニメ「古見さんは、コミュ症です。」オリジナル・サウンドトラック1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8916203513e36366066ace4f67b6825424081c1989f0de6fe7a5daa91858a437. 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/JPCO02205400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6252b16b48cc7297469087e7e846ba2c2473c48929221f4899050352e43debc. 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/JPCO02205410.
ohashiTrio collaboration best -off White-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fea206506f00ac18c33796599b0e20edd5db2c5a6e4a9094d78cf1ebcfe39e. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JPB602300087.
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 0x1a03321508ecab3867de3ac76d349821970dcbe5685a7b685d8ffb322944930a. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/JPA962400013.