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 0xe5b69dd3f5778f4e27704657977111674049b65a62f2b454bd69c92103cddbb4. 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/7208e59b-e93e-4b7d-a1d4-05e30651f3e9.json and https://artists.proofprofile.net/proofs/artist/7208e59b-e93e-4b7d-a1d4-05e30651f3e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
おとえほん 日本昔話 ① （朗読：南 果歩 音楽：守時 タツミ）
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 0x2fa9ad4ad0517bfdc35679afdff21b605ed4f1df83bb4759d3a2ccf740eac24a. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPE401300369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e38920abb6433108736a418bd1105576a5fc04714f565851a39aecf9ec491a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPE401300371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c4419f2353d224e80f64243b476e48b8f55e154156311e6ea90d6fc6f71cec. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/JPE401300372.
おとえほん 日本昔話 ② （朗読：南 果歩 音楽：守時 タツミ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99471c353261ebb3d8c75a24e1f6e62e707950f637d84eabd295466bcd46f5fd. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/JPE401400181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ccfa64e3d847fcb484c89a2566aa5ac2d9becee60d9d9eaf49a01317eb76d5. 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/JPE401400182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95110c3c662aa7938ffa21a48565239020180d1154facb054a6819c1f9f2732. 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/JPE401400183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe9816f058fe1ddbabaa327425e8f75100a13bdb802a2fb718fcf90508c0284. 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/JPE401400184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142ed68f9f78c3351a05598a4296a05ef057e605c0c8db24aeb22cea4e3d9092. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPE401400185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8de7fc8693ded7ca9830072a38f225900724c67298cfb7fcd59549466690de. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/JPE401400186.
おとえほん 世界昔話 ② オリジナル・サウンドトラック
おとえほん 日本昔話（4） 【朗読：南 果歩 音楽：守時 タツミ】
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb067d81df14867a91806bc4f5ab0d0e61b98379d8509e0e5b9ba42c0504ff1d5. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/JPE401800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c3ecb4b5043601bff83703bc778e49e2d4e60f684f198172be85d8cc12b0b4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPE401800056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda972d9dd3b07ebe7a791dabbfc38723a87316cc02001f84de4eb1587ad2f93a. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/JPE401800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b6e6e512d2af76bb45693f9773fd5afc989dfdd38cde917ba56e533dddb758. 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/JPE401800058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5a020d48a19fdb376bf62aeff1187b30275c9cc427dd53dcef9324a9df5e5b. 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/JPE401800059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53760435beadf3ed4482984747acbae6c42f93657a5c3c0b36a6f109ba34ee4b. 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/JPE401800060.
OTO-EHON Japanese Folk Tales（1） （Korea ver.）
OTO-EHON Japanese Folk Tales（1） （English ver.）
OTO-EHON European Fairy Tales（1） （Korea ver.）
OTO-EHON European Fairy Tales（1） （English ver.）
おとえほん 世界昔話 ① オリジナル・サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda2f55790d8a144f6b62fac32f14cc150995339b37d57be533adb0c8b71a3c9. 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/JPE401300397.
おとえほん 日本昔話 ③ （朗読：南 果歩 音楽：守時 タツミ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5eeb4c983f7dc837bbfacf2ef6497b945ca8350cf69904e92772ffb4e15b9e. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/JPE401500220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8677224d35f4f077b0fb301c2fef06940b41c36ce1ffaa3576a372a2c18e6caf. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/JPE401500221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52422a8341569413952964d224079f967e527155747a1266fb72c050d9895040. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPE401500222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e87c5d6576564b96c2d1965f34d4411bf26012c4a6b40118193ba9e851449f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPE401500223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e5f8a4784a9fa83dddcd1642d03032c10dbda2a375d7ff8a1a2c124aaf51c1. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/JPE401500224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c10754c198d2fdaa159c0605edcd6b0424749f0951006229a64c72b1b58a59. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPE401500225.
おとえほん 日本昔話 ③ オリジナル・サウンドトラック
おとえほん 日本昔話 ② オリジナル・サウンドトラック
おとえほん 日本昔話 ① オリジナル・サウンドトラック
おとえほん 世界昔話 ③ （朗読：鶴田 真由 音楽：守時 タツミ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13d9db682a05b07d4b157a3588b596c48009a84324702e86e8cc4891316c89e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPE401600112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5fa0e03b50e34d153950cf4a0ee3c8c4fae7d036601dcc8ffec071fcfd2f3b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/JPE401600113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e2caee25214d6b7fa63b738ecd6c9b8ecfeda095948ef4262b37215d637663. 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/JPE401600114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126aca059097970ed75ac8ad99662482cff2b3a01f1dcf4e126c13cdc5a3f7fd. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/JPE401600115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60ed5f9f7ca15792c94d589428653cf28ee92bb97f61a5bed3b5e84702c500b. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/JPE401600116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af79efd17cea164625f47a457c9e7b77c72342e50287a7c033c190c02007f0c. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/JPE401600117.
おとえほん【秀島史香エディション】日本・世界昔話
おとえほん 日本昔話 ④ オリジナル・サウンドトラック
おとえほん 世界昔話 ③ オリジナル・サウンドトラック
おとえほん「どんぐりと山猫(宮沢賢治)」 語り 鶴田 真由・音楽 守時 タツミ
おとえほん 世界昔話 ④ 【朗読：鶴田 真由 音楽：守時 タツミ】
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05da6c9c2c8e9f256233660df6eed563302eb9e145beddff51a6740ee5acde4. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/JPE401900088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca94f519ee118816423c7caff5301cbeebc4ebee28daa3808e1ddd5731ab5ad2. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/JPE401900089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5adc0081e6715d0c2414ce62aa93494627c877ad4f66e3ada4eff1f08b3e49. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/JPE401900092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6e28029142b01dee62b350bc5e0fdf9de7e01bb5f425591e9c643d47022c0d. 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/JPE401900093.
おとえほん 世界昔話 ④ オリジナル・サウンドトラック