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 0x55b486cb98c3d9a7998f86aba89d8be52384e5fa0bc6c22e6cd72d7df9a9547b. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16d84951-15f5-42fa-a7f0-3669f2a2837b.json and https://artists.proofprofile.net/proofs/artist/16d84951-15f5-42fa-a7f0-3669f2a2837b.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 0xb3fe6d67b2947af84b80fbc1ff05787068c33a45e8bfae9f72a97c64689aa38d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:28:36Z), 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/JPB601895392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227db532f94ca069ea9f9edbbfde2c1f8dd95ee265770dbf5b3cd3acf66f919c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPB601895394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138be1047150a58c09fef9bd2e7785a90ca7fd818c45ff7cd790dbc2c3842d4b. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/JPE562006884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350d4aecc670c60f5dadd54c3b4f4ad6457efd99270b5a7630a0b8dbd709529a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPE562107346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c5f3ba766aec3c703dc23f12cb7a3411f100d489c9bcc97742f4c73fe8ebf2. 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/JPE562107782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58edb66587ac3b9af7c7eaa60175f9c67aa1e6dbbd7a03b34d293a4ad674ff5a. 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/JP92Q2301004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a44af1e52e38ec6f3ea163b80fa268cef21d064adfc808fe2abfd99e4ae04d7. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/JP92Q2400252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2db8a537a663642edc56981fc730b0cfe9625480a3f1e72469b58d72ed2dbdd. 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/JP92Q2501707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c686393827503a26a91cd70b7db6f5a960fd074c6f3d83eb7a21343d43b68d8. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JP92Q2502330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109d1360dcdb7348479146c9db7380746509c74a6955d20a0aa70a0b1dc4bf5c. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/JP92Q2502332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b0699ce5c6656fd0e3c911f6d9622d843e16bd0ef36c5005177d4812da337d. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/JP92Q2301408.
初音ミク「マジカルミライ」10th Anniversary OFFICIAL ALBUM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08029f2515c5be21f5ffe4f6af5969637f9e0341b6a91a73cdae8c11672f48ea. 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/JP92Q2200386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34af3d029f9490164ee7ead0a8875bea058e824ae4542c172a062b1d2166c56b. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/JP92Q2301404.
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 0xe7c0d56add4993a2e1629f71a4dbcc505d6c05c717d7f9a4a8581052d31d6ac8. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/JP92Q2301406.
Emptiness (ShotenTaro Remix) (feat. Megurine Luka)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100edff5c192ad3d7e7e75c27ac23c4fe1c83846b27e86c426078781b3acd06b. 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/JP92Q2200246.
Someday'z Coming-初音ミク「マジカルミライ」10th Anniversary Live- (feat. 巡音ルカ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f89c63383c41ca63aa3957ca0878858a551edd9f46acc34743b6176826e494. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/JP92Q2400672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e987e86bde882971e8c31095f36d9c09121ba6622d9ce59f5230cc3f3a836b. 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/JP92Q2400179.
Cool Me Down (ShotenTaro Remix) (feat. 巡音ルカ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334e2ba754a0f954bf67981d1b8799e0b9b6d574db65b4b08dafa74a8435b979. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/JP92Q2400180.