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 0x83d9a7e3b41c752847cc2eec7bf542896cc5bae18aff7fac2358ed7cb989e18e. 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/af0946eb-59c4-4413-a264-3fc50f777209.json and https://artists.proofprofile.net/proofs/artist/af0946eb-59c4-4413-a264-3fc50f777209.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 0xdc9f3b2d9ec02ac78b5cb4c81a8b7aa73945dac7e29e8c1842bc79ce5a6b0445. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/JPI102200199.
プリンセス・プリンシパル THE LIVE Yuki Kajiura×Void_Chords
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd20ff45e5f9f3ebd1b56d2f795dc472217e06dfcc0552c459d7c55261486afb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPI102402367.
my ID (feat. Ryohei & Foggy-D) [Capturelight Drum and Bass Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc86309f208d4a54787b4376bb82dabdb0aa7343a206b25ba1c8d1c39f6d959c. 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/JPI102000621.
Transcending Time (feat. Ryohei & Foggy-D) [Void_Chords FDH Remix]
Transcending Time (feat. Ryohei & Foggy-D)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94740e7a33a7601da1a1525122f21b13f0b8ad8f43239b11f8451aa6397f1138. 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/JPI102200658.
AVIATION (feat. Ryohei & Foggy-D) [SARE Electro House Remix]
Beyond Selves (feat. L) ["Tokyo" Remixies]
TVアニメ『RWBY 氷雪帝国』挿入歌ミニアルバム「Revealed Dimensions」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf8548d7ddf10e0aeff17344f5c48059b7dfbcd56c3a58b6af769f4030a9ed8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPI102201885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4d3e8baa9262d1aafcd04ac5610c43cea3f8054a7bb1a18cb3744c7ccc7994. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPI102201886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e0a0af9c5eda1b43cb4b94a7706fcaf443d65758b65a08a648550a0831f3ca. 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/JPI102201887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f0dbd630e4846130bc29a30da190020b515056fcc94f4011f4b4ead85b0bd1. 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/JPI102201888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31deecbead13e1630f127f27f0e9ba7ef40ad9709e30c6f54621bc2417133bf. 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/JPI102201889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa030898107b3eb3ed349fdd3a661b513c93d287dccc299d7186bc7c7e0767b98. 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/JPI102201561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94740e7a33a7601da1a1525122f21b13f0b8ad8f43239b11f8451aa6397f1138. 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/JPI102200658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d039f2a83d32508e8eb4e3d87dae656c497cbdf683df420abd3d7b81393bbf. 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/JPI102103567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5f564ab0f5bb69ffd2534875f90bbad8f0d66e0a8473db872d4553d84d7410. 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/JPI102103940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d039f2a83d32508e8eb4e3d87dae656c497cbdf683df420abd3d7b81393bbf. 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/JPI102103567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc86309f208d4a54787b4376bb82dabdb0aa7343a206b25ba1c8d1c39f6d959c. 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/JPI102000621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c58e2512b0e873e61c056aab12ce0c067f0827f83c39df308712aa3574a281. 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/JPI102000424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ca04f26821ff28527c61249d1f715d5a39194e19aefe3bf5475ee69f0ef10d. 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/JPI102000425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09495e9d6d121ea9fe83665b87cfc5a27013f6e26a139ae906909d5f49c5fb4d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPI101901085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9645a7273ae26b24ef8523dac4c5ca7267df465b42f49d69d1a0126325dab8. 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/JPI101901086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65357ddfffdac4a3944b905c5ec625627d442185363db663773094405b630e1. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/JPI101702223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952b38f72314b87efc8872cfcefb554f5d85c913a5614fbbddbd7a792581ac05. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPI101701400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04565f9f9c437ebd5a079997594c4976e6257d4ff58b9c0d7db85829dccafd69. 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/JPI101701401.
TVアニメ『プリンセス・プリンシパル』オリジナルサウンドトラック「Sound of Foggy London」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903591b7f5a30d6fe6caa1360ff52558e6def8e2f23315519c956fa5a768ff6e. 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/JPI101701852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815b552d64f7699ee106f48f0c5b581f128dc32381547af50f37f78b73be872c. 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/JPI101701878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43acdd1a5d439e2d736b9bec4da7d2ce51168421a6a12c02c5411649bb0661a9. 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/JPI101701863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e0ef0fdca2a92db9848ba6471f6af5136fccf146da45152033358f8643e192. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:34:50Z), 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/JPI101701892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4e7374537e9742f133bb7ef9abe723f825f2d8831dd7eaae9b89727dbd30aa. 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/JPI101701224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933204a317e5293caae2f8a20d8d668728822ddb60091a0723e8db6547cea056. 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/JPI101701874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18abcc9dfc1078473e7acfa627ab6c078fff0881cc90a6ed73d59fa39116de0. 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/JPI102000685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5400833d1dc7b275a4ee9a398556c1ef8d9217b763305c9e43b0bcc08a019989. 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/JPI102000717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40338877721ccc4f89b8170a79f924e6ada94257e45360a53dab96a4f3f48c3. 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/JPI102000728.
アニメ『トライブナイン』オリジナル・サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a93d86a041b917e9b36c4b349dcb2734767d48cbaa0e840cac707c3cccb922. 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/JPI102200576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cd4d42554f9ada7a47cc179c66919fe8defa5c51b0dd1d13d1641926295f65. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/JPI102200556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f162c92820690492dcb20789930903913f6292354a7b833119d0b95e6a79f0. 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/JPI102200579.