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 0x9fb71dc26c1ce6465a5f95c6638315012a47253afb853e4248bc7bc7769fc11a. 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/55d11ade-95a2-404c-936c-7fbcc04d459c.json and https://artists.proofprofile.net/proofs/artist/55d11ade-95a2-404c-936c-7fbcc04d459c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
CLAMP学園放送部 オフィシャル・テーマ・ソング・コレクション
TVアニメ『小林さんちのメイドラゴン』オリジナルサウンドトラック「小林さんちのイシュカン･ミュージック」
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 0x570661e534ad97b6cb964ef94238a32607d3957a6c695b710679da52f62834fe. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/JPI101700395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2d2baa961ce56e19da6da2d1dc7a3afa00dac083ca24997438dc86c6b09e0c. Chain 2 (Bitcoin): anchored in block 957703 (2026-07-12T12:26:40Z), 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/JPI101700375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b83c8068185ecc68926d6fd20511ab57f0277d20b32037e9179ac1e7becd03. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPI101700396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffaede69f3111d124bf83008cbe439c22393c82904bf3b9c671708b9b67e49e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPI101700376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085ca5d440ab395ccb27732d15a737ce24f2390e1ed0b528277bbe098af79651. 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/JPI101700397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7c5783e4729dd2e864eea1a3544a192f74013a0573f06b63bb1409c0fbaf28. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPI101700378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae94fd95a5ca8c169998199c267616483716efa7ac212a84f48a32af54dc941b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPI101700379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22759281df1ca2a8ca9bdf0a824b7271298ec08018fec71f496af5aaf8a0c3e1. 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/JPI101700380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3234324434d96903fb144029a6f9fb2ff137709a77b8461348d77d75b1141a. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/JPI101700381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41b0adaab92d8bb0d544e5e522ac091b403915485c8595eadda93e4535a143d. 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/JPI101700401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff4eb34723e69cbee513716be2afb291260bcf517636c00feed84a9ddd91fae. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPI101700385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee154be8d797b4413e229360e9f8e7f5a4dbd6485aa020f58421ed934995741. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/JPI101700388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b25ebb663287e76ad24d73fee6946c398475102d19aed49afd92ad216b68d7. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/JPI101700411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994e39878098f23497d8e881b96411150a9362d227a221ffd90c85edce23645e. 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/JPI101700393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5cccb5187cb2a4500db6fc951fd9c0f07326779f77eb4b621e767d11041dc3. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/JPI101700394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bfeb2db1b57563d0ee352627c018671ed8c630cb801430067c288b85d1157c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:24:12Z), 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/JPI101700382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ca3a686348017c5da1f6d4403c857cd769a525c796afbc605ce9c42813c146. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:09:36Z), 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/JPI101700391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0def8660256b519ead52b43972f92b27e2a808d3f512a1cb93e73dbe8c7658c. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:47:24Z), 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/JPI101700392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444285baa9425f5c526525eeeae98c830a60fefc1418e937778a01554b6dc915. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:47:35Z), 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/JPI101700414.
映画『小林さんちのメイドラゴン さみしがりやの竜』全曲集
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4020c030e970fe2565a5e2d9a4d10e77e96073133908b51b6eb4a067936fa92. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JPI102501282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb357eefbe51f429d94ac6de3683d1ffe92814590488b6dc2e80eeb76450ae8f. 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/JPI102501283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce8abbc52956059c6f025a9826de2fe9c5f17e6a0e3d234869cbd92c4b67b03. 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/JPI102501304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf334903727a620e2fcb4681f5f15e1c659e70987db674ea6e27457b261c7b33b. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/JPI102501305.
TVアニメ『小林さんちのメイドラゴンＳ』オリジナルサウンドトラック「イシュカン・ミュージックＳ」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9b428120b7e37b3a7f5b69cc6c59a269ee5f6f85bef206260f9c195b629bae. 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/JPI102102334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3248633f837f03a6582360121776611261d019274c0be85b6b8e0015234281e. 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/JPI102102337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938a288d0b7c74d86a02ad6f04c5ba489e076942b34699de47555d7b23f0e71a. 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/JPI102102340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a436c836a24dc2d1bb0e0247d17ea23b54a1cf28ace44b1f9f5224b0275f03. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T16:53:26Z), 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/JPI102102341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336adba1d721222c80e159a9c66430dbedd06be9c5e0fe76602314fdf255e546. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:27:09Z), 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/JPI102102351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c572c726a92aa9b2af98ac0fde8dabaa6b20daba2ebdc493d82a8b6cadd78c. 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/JPI102102359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7030e33474aba1e83e9204a6fb02dff1d08998c81d5640d9b8b8ffd4aee2c24. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:35:49Z), 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/JPI102102366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5eedc72aa9eb6a272d52b166db4cf03e137273331da3723c2605494d80109e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPI102102369.