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 0x5c44b833443ff8af9f83e0cb8a1c981e5135642aad2a647a7c356143e3a91dfc. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2d7177b-6527-4838-bfea-c6ef5facb2dc.json and https://artists.proofprofile.net/proofs/artist/a2d7177b-6527-4838-bfea-c6ef5facb2dc.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 0xe5933a75962ff65a713aa1e51dd6557c7e096e179126298cff4b61f4c720c808. 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/JPI102102233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14afee74e8796acc251e599ce98f26b9fbb5b94192c1350972abf4c69951d52. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/JPI102102235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b9103a37558e54aaced59a6e1f75f395877980bb75cd03a5244314e73adcdd. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPI102102237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36ea275e048897808c26eb89f14bb279ad2768574f390dbb387051896debee5. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPI102102238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4718bfe2abf6c41fec51395f2072def2816df7c83f294ae4c8314ab365c299b1. 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/JPI102102241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b9103a37558e54aaced59a6e1f75f395877980bb75cd03a5244314e73adcdd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPI102102237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36ea275e048897808c26eb89f14bb279ad2768574f390dbb387051896debee5. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:30:39Z), 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/JPI102102238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf201f6b5d1dd6b5143b3f3a2a4147dfdefeb06aa597971afa5539bc8efd386a6. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:02:20Z), 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/JPI102102242.
ニジガク ボーナストラック コレクション Vol.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53aae70ee74423b564a5c339a036bcb5ce14752838d286cf8201f7f2588c45a9. 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/JPI102002011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8bbd04cd8f78b3c0d0788b9cee7cecf74bb2a7ffc6110276cbee06d4988f39. 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/JPI102202965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9954ac8d8c2bb1ef16ba9eb0e18857b2055e3508b7279af9e78ecfd19b4975be. 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/JPI102202966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206fa179610f8bee9cad425b38ec757589c4d532418b07ef89cae64d43f64e8f. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/JPI102202967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe64ff40dcf1752808513df9a927bfcc319ad9e235b85f11bac0566d7792b8c. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:25:00Z), 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/JPI102400140.
NIJIGAKU Instrumental Collection Vol.1 ～TOKIMEKI Runners～
ニジガク ボーナストラック コレクション Vol.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0950aba4c4379278298928dd745b830dd5bdf29d9876f32f4f150258ff09a1. 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/JPI102201527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444575601662ce6781398c4191e1e45219e227baa1dea797a54370a9e0cb5aaa. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPI102201876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb507122a595b6cd09daf9cd5e10fda4f3ee3aa2498c8508a30ce1c05ef895841. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:00:40Z), 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/JPI102202128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddecc28faeaa01b1c8bdba75b388deca5616ca1dfb46bdfce9a896deceb14534. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPI102202130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6b8242522a58ed250f3cee52c5d29a515cd1cbb85ff566a19d73c15e905ab3. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/JPI102402165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272bc653ec117ebe494656ff8a7fb3804824b999005423653b9a801f23819f1e. 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/JPI102402169.
NIJIGAKU Instrumental Collection Vol.2 ～Love U my friends～
映画『ラブライブ！虹ヶ咲学園スクールアイドル同好会 完結編 第1章』オリジナルサウンドトラック＆ボーカルコレクション「珊瑚礁の記憶」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c61792678b7ead5abcf6f158f34e492eb85dd568f1bd53f531895fa6c0c751a. 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/JPI102402925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a75deb8651bc5b90a9e1adb938dfad1810210b06c284d35cb478e8cb24f6f0a. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/JPI102402929.
PHOENIX (MOVIE size)～Stellar Stream (MOVIE size)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fccc8721923b787506073569b37ab31809e6ae48ab976b32e900a170afd639. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPI102402941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d242e82da5fb9e549bb6ee664c271cfd6c866e6a3c16c1715cbda180303163. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:00:49Z), 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/JPI102402164.
NIJIGAKU Instrumental Collection Vol.3 ～Just Believe!!!～
NIJIGAKU Instrumental Collection Vol.4 ～L！L！L！ (Love the Life We Live)～
L！L！L！ (Love the Life We Live) - Off Vocal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945f870ac64f07f92ab1c789aca694d56868b0c16f40e32a6f830d15346e8c84. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:24:04Z), 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/JPI102500606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6550f2ad714105d5ed3e71ccd900876230dcdaafe361f82bdfa5154e92f896. 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/JPI102500607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6920d62eafee5c61f2f8be2626b28c79ec2d1d621e18ccf1252ae6bba9db537e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/JPI102500611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4346e2c8fda5447bc36de58e63cdff05692ddef88897bfbaaff1b151c38f7f45. 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/JPI102500612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0a85cb370211d367dc23c0510044dfcd56483b38b6c92cc8a59cdf99d9ca51. 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/JPI102500613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0778857f0665b6511de2ee4b6b26b24da64b3269086485e73b0ff3ec5b6ffd79. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/JPI102500620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88258beec4dc5fb4f893c884c447c1fd9434326e918bd9230f76f0d4af4d3f1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPI102500621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd0d469bc87552535cc9110f3cef3bf22583a9c75e584bd29b02efe96949ccf. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/JPI102500622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d6b86058a9d883906c9c593efd8cde6e0614d19c889a11420765e4737785e4. 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/JPI102500623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d76b430e26a4b054f64ef13a0617ac23f528212794ef60c74bb1f1f0f37a958. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:49:18Z), 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/JPI102500624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73e5dfed975575eb133795c653ff13f48076c2a8a17e9d1725ea6308e0b5ac6. 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/JPI102500625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5779f69e9d6ffbdf932cb62ad6dc9b6143fdefd4e67bcf8752e6865d740cb235. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:00:01Z), 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/JPI102500626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65851dbb1295d3ff662563e6667761efa7bec0e3af689b273964b975af93099e. 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/JPI102500627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c31c9879f57f1aedd7e7c57fad1e09763885f0faeaec8fd30f445bda73b8071. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPI102500628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bea24e6359bdbfba4bdda25fd83395d2824af558d0953870d85fa18320da076. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPI102500629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9157c37cd8e7f016d10fdaf1093a2b0b5e22947a6c856d8c96f24608cf6499e8. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/JPI102500630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe703c20b143df84a2833ac0f9c9d993c6464a78e4b4e6f2cfd11445f455f5f1e. 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/JPI102500631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1497654c7387df3749977c9500b7fb7cd4af25fc15425b6849af90f003f6c4f1. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/JPI102500632.
NIJIGAKU Instrumental Collection Vol.5 ～Fly with You!!～