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 0xdf672967b92d42aad31f1f9dd1e21f23e4d970b6472fd55c0f8fc8fa6241e737. 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/804522f0-1160-4c97-8888-aefd1e9c79fe.json and https://artists.proofprofile.net/proofs/artist/804522f0-1160-4c97-8888-aefd1e9c79fe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ギター・ソロ カーペンターズの名曲あつめました。
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 0x507d676479ec1f7ea83224810d9f37113fa1803ac215bedcbfbf6674dcf59346. 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/JPE402200947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60021d8bd9902b126f9c025d0c600b860cb0604efe6bf10372510fff1926e7cb. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:55:30Z), 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/JPE402200948.
ウクレレ・ソロ・ソングブックー弾きたい人気のボカロソング20曲ー
ウクレレ・ソロ・ソングブックーはじめに弾きたい33曲ー
ウクレレ・ソロ・ソングブックー人気J-POP30曲ー
ギター・ソロ・ソングブック－やさしく弾けるスタジオジブリ30曲－
ウクレレ・ソロ やさしく弾けるJ-POP＆サブスクヒットソング
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84141a7b05a9d1fa8cf2d13fb003c9026c6d55491be5d3eda255f8f87e60301f. 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/JPE402100112.
ウクレレ・ソロ ウクレレで弾く人気ソングあつめました。
中級ウクレレ・ソロ オシャレなアレンジで弾く人気J-POP
風の谷のナウシカ ～スタジオジブリの調べ～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970fdf307434c8da3bd895702e40318d88cbcde771c6d470d146858a37ea81cd. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/JPE400900608.
ギター・ソロ アコギで弾く大人のJ-POP名曲選
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3945133aa1cbc5947433d527ee88cc80b7e6d81213fe7f83b649d779f0bcac39. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/JPE402200843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf14d8e9043640e9efaa6b4cb20ad29ba038a5e0f8d2f7450a518d4ff8c8b8ff. 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/JPE402200844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39494d5503a18d1e6b25c51e1b407dac06be1cd874c43ada4211f4a023fba0f. 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/JPE402200845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22995572ad0bd497d22f9de5ebc63edd1fa303d3f05eaa2fd371c92b97c8074. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:39:03Z), 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/JPE402200846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9049d09caacb35179d05064fab36a5714120d79faa36bddc7a68aa2be68d0c26. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/JPE402200847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6f43818a1fea88f05b41486c0e621b914fe9beafe1ad5f701db9516f30982e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPE402200848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac639647a508e32330bb72ff06f24e53c2f98fda791040a6574f3dd8b0295dca. 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/JPE402200849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1ab847e52f989452b9be7b7a81496ad64daf26062c280ecbda45ef98fa4453. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPE402200850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662266abde614b6fa413357cda570f2bb2291c1a46281fde0c85882ddfba74b7. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/JPE402200851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942ffdb8c14576cce2352a66ac2c0daa6f7a2eb6ccca2589dda9541061ff9df7. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/JPE402200852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a4f9fe7a3d825785fed8def7306f162e6ada4a1e333068c516cd529aa07c71. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/JPE402200853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e190cb910d5eef86c084138251fae2a3128c38ad830471fd7ac1c2f7d4de5e. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:27:33Z), 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/JPE402200854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888656820af76a2b514bb09b8dd77dcc916bb52c91bc55c25b152bdfbbe7babf. 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/JPE402200855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d6c5cf8ec399e551a4e65846fb05e60b3fe806c512b5f11b13210393f21adc. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:30:24Z), 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/JPE402200856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72009baa4618166be7acca94171c931573f18e6a6e88eebb1a4810f503aff9e6. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/JPE402200857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09c417bad051c6894a9b4e13d1b119ea7f46d84d46102f93ef5c12174a17a88. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPE402200858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d52d5d56d5e3f702ae9cc2eec5e6efb2236ecdfb8a54e5f4d48e7b25d427d16. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:29:34Z), 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/JPE402200859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ffbc5ade7ca0d693a44cadd2a19cefe58da84d177f47a564bc664699571966. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPE402200861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd982bc0987769d6cb1fbcae94fffd56bae3659bcc516c4d30a3a976975e79685. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPE402200862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6774a58139fc3a60271eaa958c2c6fb42ef29272a06b840a77d94ed18f96023. 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/JPE402200863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fbc0329494c6ae8251ad0c767813ef76d7ea824ffbf49c1ede84e8436256de. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/JPE402200864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e02df7b6f9da7644f0f1ed362ece25f5ab48876f6fc1119e76eab9e58ec35b. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/JPE402200866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382dbdff1c5371d191ffb51e0757d26bf7708dc490bf0b8326ea44ade808a007. 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/JPE402200867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb85f291a8e05364456a1c1a2a1163c90ab63dbf9404de129afb07fcbbeaeb33. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPE402200868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fea2daf9f6d4c9f9b497cb3e6c72077b5a67b9c9bec7502da2b6d4b1a27fcc. 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/JPE402200869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883ce3381989767be2ac3185b6aa33ff76d122626d375db1dcd8c8e6e8d756d1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPE402200870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ede4d10de9123639e2c9d24fb1b292b019a5cef441a590759d565163e7e1642. 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/JPE402200871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec01daa22341198ac55ba84d3ff22e386d75ed7ebd09f47d747b8323a649bbe3. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:44:59Z), 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/JPE402200872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f58a2c4c7b0d5b05768cfe72c1f4d0b2ddcd77f7ce61b7c3d7ecb327bb4426d. 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/JPE402200873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2cbabb7d8e6af139ab062867f7a73fccf467c37980e78f4059fd57403ec05b. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/JPE402200874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbf1ecdf2c93ac2404c7cf1bf47ea66bba98996cf9d2b0999dd30d5e6b51c3d. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/JPE402200875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600cc9076ba3c67deeed049b2019d13219b0452a3b703e898b8e0d0847b71be7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPE402200876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1349625ba561f916c0f3a8834e388d5fb035843cab027b1cbc6042787e601d4d. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:29:54Z), 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/JPE402200877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c43de4b399834a8012b9eb31045d28b8f7544e7b43fef749d2200c189d58ab. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPE402200880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b26f0c70cc21ab316c42ee9325a98a4accacf0ba754374b593b78551f788167. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPE402200882.
ウクレレ・ソロ・ソングブック －やさしく弾けるJ-POP22曲－
ウクレレ・ソロ・ソングブック－弾きたい人気のスタジオジブリ20曲－
ウクレレ・ソロ・ソングブック－弾きたい人気のアニソン20曲－
ギター・ソロ・ソングブック－最初に弾きたいJ-POP33曲－
ギター・ソロ・ソングブック－最初に弾きたい33曲－
アコースティック・ソロ・ギターの旋律～至極のラヴ・バラード