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 0x7df7acd959f60e8e7ca968687832d64a551b3f20ca1cbcf0edc3352f27d2ab24. 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/a405caf7-d7bb-4577-9522-f0d68d19cb39.json and https://artists.proofprofile.net/proofs/artist/a405caf7-d7bb-4577-9522-f0d68d19cb39.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 0x3eade58253a470a68a42e1ff1d44c8fd768db060f1f4f1a44c97226ff9a321f4. 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/JPCR08200030.
兄弟船・鳥羽一郎 海のロマンと男の哀愁を唄う
兄弟船／流氷・オホーツク 鳥羽一郎 セカンド・アルバム
翔べ鳥羽！ めざせ水平線 鳥羽一郎リサイタル
水平線～星野哲郎・海の男に捧ぐ歌
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ba70aa89058ca4e317c7cd970c947c14abedcbabcc20c40b77716ed14522c1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPCR08800140.
ふたりの縁歌／嘘か本当か知らないけれど
昭和名曲選 Ⅰ あの歌 この歌 想い出の歌
男岬 （海の三代目）／母ちゃんお嫁にゆかないで
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f781368dcbabad8d5f4bffca22409d391fd2dc1bd3f7f265adbab933f57d44. 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/JPCR01903650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed28fd3597c938cfb7fedb167679787723d64260ce8f51baeaa4a35d8f5db839. 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/JPCR08300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f79090d7b757e95fb5af98010ef650a5d5ddc06f0d5766bea213514b620c124. 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/JPCR01903660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8551e4ae7fa9f208ed45b840f45974f06811eeed2c40a21ea631a6dc42fc7694. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/JPCR00404550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c9fe2db1ffa1b579f46a7c98d69570d7ccb5abaf69d0a80280077e5aca5263. 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/JPCR08500240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3868067ae9eb6d913e84e74caa997b8d5df002ddd8567bbd70856472c2095fc. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/JPCR08500050.
鳥羽一郎全曲集〜戻れないんだよ・兄弟船〜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12e50ed467e829000435b65d3d9e7b365eff75469e415c7f91d64969c2f3338. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPCR09000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7c27708ccbac878c7155518c3e5a32ce1b6625c4302b7edf17b21570e97138. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:11:01Z), 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/JPCR08200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd22c3d603a360ff750198774c75bb2e64eb44b3654e5c76b040f6265e0b805. 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/JPCR02002190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af4cf6b90eb993074273f88e182fbb2adfe228cc196f253b44477b3cea8e595. 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/JPCR01200230.
鳥羽一郎 40周年記念アルバム「この道」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ba0897ab570cfaf6092728c93f15cd98f1b581390e955fe75b4a3697b46794. 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/JPCR00101970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e23aed718572d471bdb9234d2bd4eaeeb0bbdc4748f446e021eb7eb9013c7f. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T22:36:09Z), 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/JPCR01406270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cdd025a723c32abb2a4acc0a73e439da8a1ad4cb0f2913d53ce8136e9f1d54. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:15:03Z), 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/JPCR08800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12e50ed467e829000435b65d3d9e7b365eff75469e415c7f91d64969c2f3338. 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/JPCR09000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7d3c4f08f50c16d98141c6fb11fbf7280f3611f2121dbdd5d97809341ff331. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/JPCR09105090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3bef7fe0cbe126f56ed69e9bfa1e68ce3f07ecaa0bd0c36fdb5e1e8fd0d6b9e. 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/JPCR08400330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342cf8c53e433b3c3f73e3af59218332819c809bed19e71d49254e431080b546. 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/JPCR09201300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee39472d33561619888f639fad37e4ec57797ce6775561e308278760545300d4. 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/JPCR09606600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fad11b149475d8b5dd4475dc6c93733b70adc58d197f9660d1344fff402eed. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:26:26Z), 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/JPCR02201580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a56d8d91f39da0f272544e03c295c310d4825eaa459a94b83507a6181c9f325. 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/JPCR02202930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001330b394f38a4a9aa2cca2a2d990744f997714c2f435f22ba3a304d92714d5. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:05:37Z), 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/JPCR02202940.
鳥羽一郎ベスト ～北海の花・兄弟船～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2390645d7feddd7dc90d25e3c476afdccc4ce295f0d00e123ea9423615123f. 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/JPCR08300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3877713c0ffe7ca924b6ce8576d51631ad53e5a338a4762972b18e5ee015993d. 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/JPCR08500270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf739d1f449d447845df275cebcac63048ef2eab608dcc022af0faf8fc7d28a23. 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/JPCR02100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ace4541be76e476fa04def506bafa543ff4bbed2c4f5a27ae2dbedd59a6f13. 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/JPCR02205420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b38974931e5b1e51426bba2e9b4065934b1f22184b8279bffea15c8edf4f30. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/JPCR02303590.
鳥羽一郎全曲集 ～されど人生・兄弟船～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae06582156839c1f6bac44903f93fd8c2ddf980fba4f3c8c00dc91958785856. 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/JPCR02205410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf5125c71bda2502d0ff7ec16786bc004a1874e6793517946f1106a7a1bef04. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/JPCR09706490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a56d8d91f39da0f272544e03c295c310d4825eaa459a94b83507a6181c9f325. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:06:45Z), 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/JPCR02202930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07a8e3b5bb68191a43ea319a4afa1ed499c88a64c52c20d968740ed2da26df4. 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/JPCR02400700.
鳥羽一郎全曲集 鳥羽の海女／兄弟船
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07a8e3b5bb68191a43ea319a4afa1ed499c88a64c52c20d968740ed2da26df4. 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/JPCR02400700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219505959f92581693636a0271e6499fdaf98856375f883cafd5148e19bee708. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:43:51Z), 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/JPCR02205000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3fb67d415c81d1ddd059d5ed385fb67655053a3f086bfafe79c2f098627dbc. 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/JPCR08800120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60e87502fc7c90f83f7eb6db114c21c4016718e38e3a3ce8947cb0ba80649f0. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:51:09Z), 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/JPCR08700090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8547aa3958e4dafe890ff6fa049d13e4121a86a87775d58e5b0205273aacf0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:12:01Z), 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/JPCR08600260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c934fc2331cd91e37ac36f29c057ed5b5f0e8586c0e4e59e35dcf0f260ab49. 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/JPCR02405980.