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 0x8d9ed8dfe4f453eda7abf65998e4374fa52aa37c2a252430bf63ca05e50c85b4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa9dde92-7c2c-47b5-87a7-7e6526113319.json and https://artists.proofprofile.net/proofs/artist/fa9dde92-7c2c-47b5-87a7-7e6526113319.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 0xbe78e71178cf7a6d188f2f00549a4da30187663f32b1d3fe0eaf32d273d7bac0. 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/JPG750800290.
愛・おぼえていますか（デカルチャーエディションsize)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c17d54d5648996ef02ad6e91d83b02c3f561eb550c0863cd47355ae21f001e. 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/JPG750800291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f636c5fc0ccc8b2a52200b1ad8704d880280fa1e166342818bee7125c83731e. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:39:25Z), 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/JPG750800292.
「劇場版 マクロスF～イツワリノウタヒメ～」CMランカ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e13e52c2c6329a818b01b347346261d4c9d68de0dc505f7dd69177594f7dd9c. 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/JPG750900814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfbcc11fcf2a98c1df6692aeb6c48ebfd2497deaf7a0eb5bc3eaf36fabbaf89. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/JPG750900815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd9efc2f36f9c14f7406893f234bdc6c6dff39de0e37426bf1bcd367da09412. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/JPG750900816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26b556917c06244f31ef5c9e996a83b38ce9218ecd9594e8e72730187d9ece5. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/JPG750900817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf593d1ea9ac951c1ce182d353915e757a3687f4c274e5c16ac275dea50a720ed. 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/JPG750900818.
恋のドッグファイト（ちょっとだけ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435617afa66082909a65d16d92fac7fa64f3005b738be8b8e04a17ef0e9683a1. 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/JPG750900820.
「劇場版 マクロスF ～サヨナラノツバサ～」放課後オーバーフロウ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484e539787401aac87b679c3ec1aff60adceb791aa023de8ea6970607f76b232. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPG751000773.
『劇場短編マクロスF ～時の迷宮～』主題歌「時の迷宮」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a27db4402f782c4f59555985fe31e6dc55f21831f65d2b0aa2664f722cec97d. 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/JPVI02102374.
キャラクターソング・コレクション FULL OF LOVE!!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc71310eabd18c60e9ee9de8db37dd253625bca78119e3438932e55cb0bcf136. 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/JPG750800214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf191af61363a8aae9d4c7887b8fc7bd3693891d096103bfa68f4dd82df7a9504. 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/JPG750800289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252eae52f798e713a7a496c4b26bf2bcf2a1f6484f5cc66dc54e379ceadbc76f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPG751000424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bb04cffe43a006fd1ff8469ada3b823d7a96f124c19a62d488d822824dabd5. 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/JPG751000772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e30ea9b8ded014b57e5e8593a680e5a638f49fe689f00c92ac32e2eb1fb676. 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/JPG751100029.