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 0x34b2c081ad1651274474bb1850dde9ce79dcbc5dca81c844d289199a730d2a6a. 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/98f36466-5e1f-417e-b460-09ece28a1da5.json and https://artists.proofprofile.net/proofs/artist/98f36466-5e1f-417e-b460-09ece28a1da5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
オオカミ少女と黒王子 オリジナル・サウンドトラック Vol.1
オオカミ少女と黒王子 オリジナル・サウンドトラック Vol.2
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 0xf08101658847e2260d285a53d6b2aa803b5221265e1694627ebf561cf23eb310. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/JPCO02025640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8b257f06776c31998f87ca063a60f7b8015d7284d951eb6f44d49768551825. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/JPCO02025660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c336a7bb416cffa06ea56ccfa34e921668eb68f5a7a0821693d75bd8fcb7aa. 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/JPCO02025680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc142c95cc105a44ca2e75af3daddeb1c8db3d9d4f2116d16bd86ef522e18965a. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/JPCO02025700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cbd0f2e5512ae3fc4271bdc88d1d5d1acc329fcf95059efddf5a3f7ca699ff. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/JPCO02025690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006617be47155c437ecc7f18405665af91afd4f2303a739e432b91bc07c0a666. 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/JPCO02017430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf70f765321fdf1e257f786aeffb598a8af6b54b93291ee413b4d05b8dde718. 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/JPCO02025620.
TV Animation ”She professed herself pupil of the wise man” Original Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08135277bbd2c10d21272ee33bf1f8ebc24b99265e0ffaf8cefeb40b28d0cb6c. 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/JPK632200807.
TVアニメ『賢者の弟子を名乗る賢者』オリジナル・サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0988d3d2888bc46af456c59062608eb638032ee3a810e63dc1de3d6e1bbc87. 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/JPCO02325080.
OHSAMASENTAI KING-OHGER Music Collection Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b785f6b9cb3452e912d6a982335f488a62189394e526351acd92cce09a2229. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/JPCO02325070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0988d3d2888bc46af456c59062608eb638032ee3a810e63dc1de3d6e1bbc87. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPCO02325080.
OHSAMASENTAI KING-OHGER Music Collection Vol. 3
王様戦隊キングオージャー オリジナル・サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b61f557e010c0b9d02456f35f27dfd8bc0ad046798be577c8f7ada9d3408e2b. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/JPCO02309630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa910aa931a4c816eb736716a1eddffcebb6f2c635b453f442ca2b4456b714192. 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/JPCO02310000.
TVアニメ『絆のアリル』オリジナル・サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cd6388e0f33a7b5a01b870e02088cd93fd9cc5fc612151394c2e97ddb45026. 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/JPN902500400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f236a708f68f0b20395f2d4cf16b682a4e3e7f681bec4c510d86cdcdbd4181. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/JPN902500460.
『Ａランクパーティを離脱した俺は、元教え子たちと迷宮深部を目指す。』オリジナルサウンドトラック
Ａランクパーティを離脱した俺は、元教え子たちと迷宮深部を目指す。
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2f51afc629e94ecfd65db34136a8a020ef0630a01f360137de963145254c33. 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/JPI102501194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2eb8747538b21e028d9490f6ff864a3491e5c927d4e754e42014cb34659610f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/JPCO01722800.
デート・ア・ライブIV オリジナル・サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014c92460f7a2688f9f32c13a917c231b2a894fbc1859e7a42b2dddebc0ebd7c. 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/JPCO02213660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae415b471fbc99a7de66e2b0dcc5edb08d14183c6b1a55543f343eb64db0e035. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPCO02213670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102d0c3cf5bdf165834d50ebb52b1e533460698a86174790d4b3a6ef4ae8c88b. 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/JPCO02213680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2028b78257d6fe4b3e38700e4efec9708aa5928af2bc17566e7e147e9b091f. 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/JPCO02213700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c08b8031dba33a51468aab3b33e6db3bb41ccaa9f2476c2f4cd6b204a58160d. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/JPCO02213710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9106d5cc098c163c5b1912471d9f6d1c0729a27658ca6e3d5e4bdbddd54a96. 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/JPCO02213720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f556e201bb584c84644cd9adf434e6e9dda56061479508edad9bb3a88f15065. 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/JPCO02213730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7765f4b01610baa1b8205041cb9974a91a615e1040a1fbfa0a9c62b0ea38d075. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPCO02213740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9af16147c57dbe665860d0ab42cbd6e3ef3453e6d151ccbfc57c930d7a78d83. 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/JPCO02213750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b89f1d3bba0d3cf4bcf4febba2f60f3361df41d8656da6f4bc72ed82f5e0413. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPCO02213760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdc0756fa6c48b5f4726fcbf52f8d89e7dc5ec3d600bb6888e7a07c1155418a. 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/JPCO02213770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e77015a8a7cf5b8b17738fac453cbc978e97e4c9573510424831e41ade003e7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPCO02213780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbf4e7272ebc568d5d6bf45c22b3344c925206ddddde6488e5a10b198f4327c. 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/JPCO02213790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfafd0aa72ca2c556f25e887d389ddd3d44a57bbd28200817b7d0435a1ca467. 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/JPCO02213800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66c832a0d99fc8678d66f3cff9c23bb94037e767d8efdd9373bc2c9612dbed0. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/JPCO02213810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf44ee2ab3b9dd41d84792540a27e0cc12f253b580f8d7fd1cc7a0ab1b3bee1. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/JPCO02213820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f0c762f15cdad4805ac619dc43eb57ccbe853d2d3d1b4f956d04827cb6ba97. 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/JPCO02213830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7f4bcb6e505b9e614dbaab9569d19b9b7bb20fd28fec977b076c06e21939fc. 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/JPCO02213840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69aba4f409e9f0880dbd907fb202246792e8d76fd121ab4e5d6b61cb66a0730c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPCO02213850.