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 0x4cbb2f6df1c2e5dd7eabca94e870b78e061d8624e09d17e83cc5a9a7d4aa1575. Chain 2 (Bitcoin): anchored in block 953888 (2026-06-16T04:55:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0db0dc04-bd9c-4f97-96a0-697e97a43a3d.json and https://artists.proofprofile.net/proofs/artist/0db0dc04-bd9c-4f97-96a0-697e97a43a3d.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 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 0xa30c1341c5c5242991dc36175f952f3d13f3f5cd78a1d3c71c773f463704e343. 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/JPZ921811949.
Blue Valentine's Day - Motion Blue yokohama 2018 Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ecdfd4d7a270e0e90d03a3f634b5e9eac76866f988e31b320301500e022ced. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPZ921811959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d69df825bbabed1a9a2a26a8446d2b9974d9fdce37d6fb182b9c7f714dc0e7e. 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/JPZ921811950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6293329f74ee1625a3c7aa5b6d58d3345d047c1e240ae24faaea0bd9f94951cf. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/JPZ921811960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7904103e54c98978144cfcfed96299d96c4563ceb79672883b5b2c2462d45a. 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/JPZ921810759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819b0733c0cb53e91b27d8ba6f3b1a1ffdd9bcee577d441ee5db8dd4b8f7a966. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/JPZ921811961.
ラテンでレッツ・ラブまたは1990サマー・ビューティー計画
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f975ef1ce46b1ca38a5b5caf2fb8b15a0490f2caaa6a544ad3e1ec5b58945a1. 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/JPZ921811951.
ぼくらが旅に出る理由 - Motion Blue yokohama 2018 Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a20847e3ee3050a272faeb619f4c840dae6cf5240afb643d298227551b8ab1b. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/JPZ921811962.
大好きなシャツ(1990旅行大作戦) - Marina's 30th Anniversary Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83a31b5692005ddb9906551f37896cf8ea41c6a33fe90c84b3b59c287a1bc96. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/JPZ921707592.
MC02＜CMソング・コーナー＞ - Motion Blue yokohama 2018 Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a25e28719922beea0a725920724e0968c45801fb08d815784fa26b34ee0e85. 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/JPZ921811963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f7461d4af5775d5bb0b00f8dea4a4806cf0a85e27346649043817c378baf17. 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/JPZ921811952.
エンゼルはいつでも - Motion Blue yokohama 2018 Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa78e3fddcaceec9218d2a1fbf4a39d2c90b962fe4b8bae342560f93880779b5. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/JPZ921811964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa64f362cbad3a1db159e33a2d45aa1a29adae969cbfb48e7b886c9140fac505. 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/JPZ921704079.
ありあけのハーバー - Motion Blue yokohama 2018 Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea9ff5acbd89b615561456af4ad3b2fb0f8b1516a019772fae36fc231aa6306. 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/JPZ921811965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc43bece9f82905d5ad46809b978cda0204f26ef55658dbbb337c7b2e5c396a. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/JPZ921811953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa176502c04a3b877b952e62a669d49b6e77da4cdfb7b163fe40f6a9b30a0759b. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/JPZ921811966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e71d7ac1f5ab4407f23e31bdb6cff734dce81f642ce467c1d23b38e8e7978c. 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/JPZ921811954.
チェルシーの唄 - Motion Blue yokohama 2018 Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612cd7521b3f26b0c47a649f4c6782e9552e1de41f23171821325be30607075a. 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/JPZ921811967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db847de8ab1e4e1368bb22ddde0d315339ffb8fbcea4a68ce0f4f49035958a9. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/JPZ921811955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590f3216aa1e1f10580bafe4178cb07975b642227e90d9891e78c5688d145d6f. 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/JPZ921811956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6706c139be84f4325817b7121c056007fab4d4d72a33e8b03b8551c01f6886d. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/JPZ921811969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3600c023f0af010cb97caf7088622cc8559062ac99237f4055196d05ad9bbbc3. 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/JPZ921811957.
中央フリーウェイ - from Billboard Live 2015/11/19
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f15225c9666c834859ffab3cba4799d525c44ca20f899eba94e597c5810737. 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/JPZ921811958.
気分を出してもう一度 - Motion Blue yokohama 2018 Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33b5bf42f29dae799bdbed317e00dbfc6c776f0dad6bd7eb60e1b13ee5954b2. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPZ921811971.
虹と雪のバラード - Motion Blue yokohama 2018 Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddf9e83dd0486d1a3f9506c280f331e70b759684f44230cb47ee3d1c4af8065. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/JPZ921811973.
おもて寒いよね - Motion Blue yokohama 2018 Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bd9504236a87ded224a867e47690dd8391cebe77f2506c46111c5d610c67b7. 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/JPZ921811975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeefebb5ae9d8bc46617c2c394943f917fd14c764901dcff2f1ea8c4bee58fc1. 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/JPZ921811977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf50efe019278005bc7d05f85dc8f92a54541faa708359c859a376d57b42aef. 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/JPZ921811979.
Winter's tale - Motion Blue yokohama 2018 Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9330209f20b15845109eae3c12642c7d0051cbc4dca90dc1e93ae5aa48c50c3. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/JPZ921811980.
Love so fine - Motion Blue yokohama 2018 Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2d76502d073d6a6ddc49fd3a2e4eab8176b06ffc05a0da6bf3238802071ff2. 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/JPZ921811982.
きみみたいにきれいな女の子 - Motion Blue yokohama 2018 Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa671791ec82ef6340e19c75eef7c85e6974fcd7a0862af1ccbf365c96c372821. 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/JPZ921811984.
ピチカート・ファイヴ・メドレー - Motion Blue yokohama 2018 Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90736a4147ec53618b5c54aeeb40592e34e22f4469b99dbac326dafe1e5ee45b. 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/JPZ921811985.
東京は夜の七時 c/w ハッピー・サッド
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7904103e54c98978144cfcfed96299d96c4563ceb79672883b5b2c2462d45a. 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/JPZ921810759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f35299f49172b41bdc612afa42e89bf23f1dd740747d749834c88ae0638f57e. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/JPZ921810760.