MTA may refer to: Organizations Transportation Metropolitan Transportation Authority, the public transport agency in the metropolitan area of New York City, United States Metropolitan Transit Autho
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 0x70feaa9a87e5ca051cf825aff53e5c4fd0eb820c80dc06fb59715aea6a20ec58. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4d27e6b4-b8ee-4373-8997-d0c0f96d1a67.json and https://artists.proofprofile.net/proofs/artist/4d27e6b4-b8ee-4373-8997-d0c0f96d1a67.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
あなたを癒すピアノ-ジブリ＆ディズニー- vol.38
あなたを癒すピアノ-ジブリ＆ディズニー- vol.37
恋のブギウギナイト/TVドラマ「新宿野戦病院」(オリジナル：サザンオールスターズ)[acoustic guitar]
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 0xfadbcd187babbd6bd50a990f6178159f227839515aaef331e593d8ecb8d7ba09. 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/JPB952407930.
その先にあるもの/TVドラマ「ブラックペアン シーズン2」(オリジナル：小田和正)[acoustic piano]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c151ad1fd2f01b46e57e764a599a16adb081b25a86c102ab35625a75b5912f3. 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/JPB952407932.
Sharon/TVドラマ「マウンテンドクター」(オリジナル：Official髭男dism)[acoustic piano]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205a8101f652637052b4350c95d9242a05b1126256a0b850c6fcd2011dee1688. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/JPB952407929.
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
あなたを癒すピアノ-ジブリ＆ディズニー- vol.36
嘘じゃない(オリジナル：ずっと真夜中でいいのに。)[acoustic piano]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699a687b29d588bf66673faefe05d534ed4d6c3f6925153d0f8065bc783079c9. 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/JPB952407232.
Romantic(オリジナル：SEKAI NO OWARI)[acoustic piano]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd88277ad201f68f2aa146aff2312e30822e360336cae7cdc14548c302172f1d. 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/JPB952407239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb71cef6ef75960bc90897083f3443c8c4891a6ed803cbf3cf439eac119d14d. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/JPB952407238.
あなたを癒すピアノ-ジブリ＆ディズニー- vol.35
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1344f6cfe6e37d9246346d45a3083ec3f637d3f771950fef78d4ab2f1b8456bd. 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/JPB952405662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce040ca068facfb2e219d8657900ecdb4efb58922f3e9200294b4f2c27068d2e. 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/JPB952405679.
あなたを癒すピアノ-ジブリ＆ディズニー- vol.34
あなたを癒すピアノ-ジブリ＆ディズニー- vol.33
あなたを癒すピアノ-ジブリ＆ディズニー- vol.32
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448053516a8768e00687a066670b9baed4c09163ae3608a535d4009aeca88ee6. 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/JPB952403622.
ひとみ/TVドラマ「春になったら」(オリジナル：福山雅治)[acoustic piano]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462aacdd937a62154cd59c0ddb27388d87a8d21cfe1cc90b31a3ad65210ab1c2. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPB952403623.
あなたを癒すピアノ-ジブリ＆ディズニー- vol.31
あなたを癒すピアノ-ジブリ＆ディズニー- vol.30
あなたを癒すピアノ-ジブリ＆ディズニー- vol.29
キッズと一緒にストレッチ！ピアノ集5
あなたを癒すピアノ-ジブリ＆ディズニー- vol.28
あなたを癒すピアノ-ジブリ＆ディズニー- vol.27
あなたを癒すピアノ-ジブリ＆ディズニー- vol.26
あなたを癒すピアノ-ジブリ＆ディズニー- vol.25
あなたを癒すピアノ-ジブリ&ディズニー- vol.24
あなたを癒すピアノ-ジブリ&ディズニー- vol.23
キッズと一緒にストレッチ!ピアノ集4
キッズと一緒にストレッチ!ピアノ集3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad3322491d35f9956d2b153514b0360e301dc1dd078ec9b6e52327fbb577fe2. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/JPB952209774.
身体は正直だって言ってんの(オリジナル:式浦。) [acoustic piano]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d3d6d57ce2624685f98e3ed3ca67a8a99d0402dc1d1bbfbf033ded7748d99c. 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/JPB952209780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc552c0751663cb5e54afaafbe40cd1967a1ad797c674a04208a5d234f990ba. 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/JPB952209781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b34b111332d9c3ec847583f2adef04d3766b6f6938ac882738f69ecacf78d4. 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/JPB952209783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0bf369e180cc8e819fa1919b65f59a921936947374916ef1bb79b1fb6da2de. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/JPB952209773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70dc8e2c5ce7cf49ef9d99334e240ad77aeaeaf9e77b3d3c1c278f346d784ec. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/JPB952209775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702ef4cb1d9af7671b02a9c71b37d0ab093313e6b4d91f7e25daaa763319838d. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/JPB952209776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af88e26d6cfcd97c35a9043c62e0f4bdaca956b9d709a8fe725396246c4d46c. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/JPB952209778.
カノン(オリジナル:音楽的同位体 可不(KAFU)) [acoustic piano]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30c3d884b42fbac83fcc4b45628425c86f38fb831871f71df66660075d2078c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/JPB952209779.
それでも生きてていいですか(オリジナル:傘村トータ) [acoustic piano]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20cd138c1a822c87e6faebf213baf6f319208981d94e98de3b4d319d4b6c98d. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/JPB952209782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a7af6be258364138c4b69f712fa792293cbe1267b5dfcb035ac7ebb13384f5. 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/JPB952208380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b17618575b0897cc08bbc43540dcb537fc1f68163f0828786ea3dd68b94b90. 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/JPB952208383.
ミルククラウン・オン・ソーネチカ(オリジナル:MORE MORE JUMP!×初音ミク)[acoustic piano]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8aa3ac5b20086a176144e1c979bcd384612df47870d8f16615dd0862871dba7. 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/JPB952208385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467e5eb30c0bbfa6cf1f996455f438e57f6280135ab9db3248bcb77d1a09e9af. 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/JPB952208386.
心拍数♯0822(オリジナル:Leo/need×初音ミク)[acoustic piano]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87c2bb23fe5ac98ea8699809a9ede163f670d2552c42cb34922225168d60896. 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/JPB952208387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8ce36ca76731d714559a17eb53414e8d721592da7e2c784f02e4e204f8b606. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/JPB952208382.
魔法少女とチョコレゐト(オリジナル:ピノキオピー)[acoustic piano]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52a20614ce367b02ab9c3a4cd899c3cb230b0ee5b320550fd8e9bb6a2a54a38. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/JPB952208384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d934fa9c270521fb0c7b60c4c00ed10c44a1231d3424a1e1b53b7d55caa2c15. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/JPB952208388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5793b85b13bc623aea29422e9ab24e4898f11396ebf471af8a812f999ed85b6. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/JPB952208389.
キッズと一緒にストレッチ!ピアノ集2