Under Graph is a Japanese band that was formed in 1997. Member profiles Vocals/Guitar: Naoto Matohara (真戸原 直人, Matohara Naoto) Birthdate: July 27, 1977 Equipment: Gibson ES-325 Fender customshop '69s
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 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 0x20731b85ab0c39df95c64503a3f66ebb99c6891e579902d3e37f2c52f9bf0c48. 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/243c1f0a-a0bd-40f6-899a-d551b65642a4.json and https://artists.proofprofile.net/proofs/artist/243c1f0a-a0bd-40f6-899a-d551b65642a4.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 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 0x89129aac29fd227cc464bf5af84d44e64e02aa9d8e156112cd9db3964c1dda5e. 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/JPFL00500990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b616eb4a2070167b6a0aeff1c1df5e0b5e4f638bc5d0655db8b09f46aeaee35. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPFL00500200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77212bae22650af130c3cd21a4430135565bf94feb5aceda234110166669308a. 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/JPFL00502450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe417fa87c44b9b86c7a6882bc7d13aa93e3fa936bf91273be871e2e20cb6b6c0. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/JPFL00601270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24218a279c5f65fa6038cf43526095bad9c48cb81fb013e21616d5d1bcd0b76d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPFL00600070.
この場所に生まれた僕達は いつも何が出来るかを考えている
bokurawa kawarazuni kawarituzukeru tabiwosuru2015 (Live at EX THEATER ROPPONGI 2015.09.12)
僕らは変わらずに、変わり続ける旅をする2015 (Live at EX THEATER ROPPONGI 2015.09.12)
KIMIRASHIKU SAKU HANA TO NARE (Live at 東京グローブ座 2015.03.14)
ツバサ - 2014 10th anniversary version - Live at 東京グローブ座 2015.03.14
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6f96ff447de64822e327c6f64b782b7b532d5b701e1db08f017bd3271c65d2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPK2026287.
KIMIRASHIKU SAKU HANA TO NARE (Live at The Globe Tokyo 2015.03.14)
Looking into the future ~while we're reflecting the unseen world~
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb33c26ef6155b464abadfbb811ed2898199f2871edf884bee28ac77d931093. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPZ921905905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43646fc464a87bc4cda35218c86d361c48998a0c1d439959b12be48e4705de34. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPZ922203615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b817fb5bbdb3090d052fcc537d69742824bba4338720569d0621b7b827f56b5. 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/JPZ922407324.
弱虫ペダル テーマソングアルバム
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dde4693ed87e43a1838cfc88355609a609f2281f0507ba140a5b481fc37ed3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPZ921313711.