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 0xf7c37cfd4ecc6d6c18ac3e703b33e15e8cdba8bc41ad9e2269cae58910a90564. 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/f75358bc-46ca-47b1-9ef1-d98f302729bd.json and https://artists.proofprofile.net/proofs/artist/f75358bc-46ca-47b1-9ef1-d98f302729bd.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 0x8224cb69261c1aeacf1d20b7217d754e7febfc67d9aeabe6ada3f66df21f8c94. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/JPTF01008803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d08f013dc358cde1f2ae5f7e9f968a5c870c76d3ffcc34e0aaa61603eb97ee. 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/JPPO01158170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b3c627a091286d59d320e5d1e22cd43cddbe9f15d3969a1486778a61392462. 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/JPTF01100901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962b6d478771f6c9149c8b7061598959e2f61a4e43c54ca6de66d9da55523bd1. 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/JPTF01008802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623de5280370839075d6e4f21a836c2aa62ff5233fa10404fb2b71d5e5a97e50. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:35:44Z), 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/JPTF01100902.
ハッピーバースデー [クッキング部 ミニパティ]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6a007aff4995fc010ae8f4c48cf3b25e56002415b02e3bfed7fcaaec0a309d. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/JPTF01100903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637b5e2cc04304ad603e9d5bbe2acf70bc20489caf8fa83177f31dc634d0ff8b. 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/JPA961000379.
ド・キ・ド・キ☆モーニング [重音部 BABYMETAL]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82490ef24c72ddd97049119afffcbf982bb0cc85ab0093cec596589f3d5e60c0. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPTF01100906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e48401475a24ebae9d055e13b945ecbcd0b6b5214052c8f5af35920e99da68. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPTF01008801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d687738e690617fe210f3b78884feca72e33c24b62fbd7168dbc8649a7528d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPPO01200342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868ac6aa280b62514f4431bb733f3ece73e985e2e30e190f245fe3790f5d3462. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T14:58:25Z), 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/JPPO01200343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d08f013dc358cde1f2ae5f7e9f968a5c870c76d3ffcc34e0aaa61603eb97ee. 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/JPPO01158170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9930946c994fff788ea5f646c8f5a099e0517b63ed40802fd4bc1dbe90290dad. 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/JPPO01156117.
3.a.m [卒業生 武藤彩未、三吉彩花、松井愛莉]
よくばりフィーユ [クッキング部 ミニパティ]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9930946c994fff788ea5f646c8f5a099e0517b63ed40802fd4bc1dbe90290dad. 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/JPPO01156117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d89f35b693c96213644e15444da942264226cebd398dd9b27c510feb2e3055. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:10:24Z), 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/JPPO01217728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d07b8f5de79ae3d4a6916400ee0de75bcd7dd117491926a41f3819a2802cffa. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/JPPO01217727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45b4946f83ee19e4e879b45aa3df077e099ee32585e07e019fd36893a4dc4c6. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:22:51Z), 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/JPPO01330139.
ミラクル♪パティフル♪ハンバーガー
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00b12bcfbd1c6c09d01a96001c53ad8f556e51b2a3ef540d80303195f2ffff9. 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/JPPO01330140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7b9fd0ada9b9deb7422f4a0a3cd63e37885be0342f9e5e865753992718aad4. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/JPPO01330144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d6e8bf23f446e43d0bc197d9e42adea4f9ad1d0cd2754d8f3857188d380258. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/JPPO01217731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6170dc8f253ed11b9ea7760893df058428934424ce1a6ea2ca8eb90283ce7b4b. 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/JPPO01330145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78b3610feb8ecaa58dcbe52aa4016cfe9a704d4e80db90a9f62791290476c96. 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/JPPO01401759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c24c03a20c385dcad969ec152b6d1edf5d3436fe2abd3bbe639a1e7de2e131. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/JPPO01401760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4359077a0b012a56522ce9e9b93fa8807df06eaf23d80f3eb7a0c98f9dc8d319. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:17:51Z), 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/JPPO01401762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6b9cf62acc41c7c717a15300158b2d0c6937240a31bc38b5e1d94847f32143. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/JPPO01401763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317e434d7c8e6d416aedc9fa0835485d2ab67d6e4519e331436abbf2e72d6ed0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPPO01400303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f2bef19779d31dec6739fb89614524047b8de94c000a4595e2dd5ab8031a0a. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/JPPO01502650.
ヒラリ！キラキラ☆ヤミヤミミュージアム
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e5f7f30c1a408f387480202e8fb6af958cc150e5ecb17885f68df229780ced. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:11:33Z), 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/JPPO01502651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7598da251e2edfcc5feab35af4cd5a3dd45bcdafe0c3914e9879deb80e693202. 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/JPPO01502653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd834ad3d6e0b5fe252854a0a4f92c6b9a3911bfc4509ef3f312970fc8ca5ae7a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPPO01502656.
SakuraGakuin 2015 - Kirameki no Kakera -
SakuraGakuin 2018 - Life Iroasenai Hibi -
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e077c2e52a2c20e1216d4f1541c86c19a203e25b9511c2ee6fb1b41237f3b6. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/JPC101800152.