Ajico is a Japanese rock band, formed as a side project by Japanese singer Ua, and Kenichi Asai of Blankey Jet City. In the summer of 1999 after supplying music for two of Ua's songs, Asai and Ua deci
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 0xa11ae10a0ca175ec56f812c7ac3ad30e72bb51eef56bfc84defaebd270ba481e. 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/577da5a4-5b8a-4b15-adac-649ebf024449.json and https://artists.proofprofile.net/proofs/artist/577da5a4-5b8a-4b15-adac-649ebf024449.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 0x3322fab62008624f8224b7153abf21b5394b3e4161e5058e280066e4d16ba5d2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPVI00047210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d5c8c2ecc809c96be158c183c4eb89a8c2c7cc41d9ecffb358d98aadc1e3b6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPVI00047230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc218ab6db79329b600f435aeae8063ecd408acb5d140dff2f3dec4fe0f48c452. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPVI00047240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee02d4a25d1bfc01372a275306b432882781e8d540c7e1fae454bbec9d726a49. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPVI00047290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46de8f75b1b9fc598598763c428fe66b26753eefb8ff697fa83c5d971f8a2f06. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/JPVI00047220.
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 0x26435f332bf94663e91cf311b8182899b7987ee4617984eb9820b3c6f59bd8f5. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/JPVI00046930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316526d07687e1ba008d003be6fda34c530994cd589c1aa13157d803874d00ff. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/JPVI00047250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd768c52d3823c66d2cc8f4a6c4830c31a7d7813a73aed9081eb5ffc4931982. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/JPVI00047270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdab90bdc52105027217a6edb29bfada049fedc040694e8e5a90642186817a7f. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/JPVI00037050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdd0a43f399eab4fa5cbe04f79adb308c27d7659071f5a182f1e98298de821a. 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/JPVI02400715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7885aad20ccfd8dcb7877c7986252500970a225b58abebdf18f2b72c2a26d82f. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/JPVI02400716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e66ef6e02d5ceb75c174ef0b28143f8c295853952974aefa65dfce691693ac6. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/JPVI02400717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c0e433f8244347426e00da3f5f22873e4b9a4c1b4fdd6388d6f783973181ab. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/JPVI02400719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4502f59c124a84f0bd2a18803d7fd4d1edc7055c1ce8c2ff8748cf6f62358a2a. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/JPVI02400720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4aef55138a43e3c55db0d13f6cadad89e6ed330e3534824ae0d4dc2fa616a74. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPVI02100885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80796c70dfa64ad9bf7f23b18496c698defabc3deddc60ce2acea9a0fe880cc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPVI00117240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe649f87ddf3efdeea66e180e5410af269e99ab81d99ae0affa1d28c4d4d0053b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPVI00117250.