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 0x9ec3fa765480cffc85628c2ece726a304737ff6564a6322818da489ef26313ed. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e209516-8e37-4ffb-b340-314e834562d0.json and https://artists.proofprofile.net/proofs/artist/4e209516-8e37-4ffb-b340-314e834562d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
TVアニメ「Dr.STONE」オリジナルサウンドトラック
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 0x44b5bfab951890ce362b359f2581b0cf1c45bcda124dd4eb2ae834a49b5d8016. 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/JPV431900067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe337a568eb1c9808a858fc827624648afeebd0ae862edc2b786e2fa268af3cbd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPV431900068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad5c5a03741082adc98cd5074a9229463cc2f8597b4519428c2b0422499d55b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPV431900069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4463f63feb37646745c34b17ca3b74d9cf07a2166a23e548a7df4ce1ce87aa5d. 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/JPV431900070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a6e3b41804071c23b45d98765c3b4e8028d4a9d3d77db1058518d73f412296. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPV431900071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb2d503af26da0bb8fb0910093535ca2e6c7caa30be3d262b5c91d86c72ea83. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPV431900072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfaaa3453f9b4cd7f66ab4615585a2fcd31350a8043520d4f51dfcd4720e252. 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/JPV431900073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4c6c1c6927e5840c73c84cc76d0d00e735235695f18d462f335454c8ac5539. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPV431900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd87c4fe6e4faba2e9848e820223f79625c049117829653363dff5ec8029a64. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPV431900075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f547870a29368e2d23b3fabae98fd5f81cf891379bb7b7d9b8d559fd492a8e. 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/JPV431900076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6b88a5b60377e955960a0ea2ee782a989e5fc0c27bbf5dbe823bd2ba4160ab. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPV431900077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c00319854541cfe9dd013c37fdd74e7ebaa4429c5299b637c419df3fc0568b7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPV431900078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08961cc7475f10b62231e39a126384362806f7050f7c063318bcb24be2ce54de. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPV431900079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa377d35850cd3ff37464f6e582756bf24a4ffd2a29cc6594af76b491a370690b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPV431900080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821f082e37677894dcaa973d3f409610cf07d9f8678685c2218c79e0102abce2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPV431900081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39419ffee149e6282f641d07a7a0231d59f6a5dfbc33e87ded3c56d31b67543b. 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/JPV431900082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9803a6f39ca2daf2ae22e7c2d053c7f2ca8767294f207bd5c1ac7252b91a257. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPV431900083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46217960a0c3695ea349be11650b491f429f318c5ebec11595cf93e9a4d8e951. 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/JPV431900084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb800e883b8a25044f881f641831aacf462bff1c93182247068036ef447ca252d. 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/JPV431900085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf590eab19c75ad37fb3bf3e00fe082d06cee0ac383c1dd4232bb247739fe3980. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPV431900086.
Aztech,Paranom,Kasper from Hybrid Thoughts
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacead3244a0c776eaa32f9f77f773ed858ebeeece6c6d13763c7c52ce9d01c55. 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/JPV431900088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2002e8e13e87bd90da7f8306327676469485cfa3fc35d8c5e73cf804208d91. 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/JPV431900089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad9665f52ef2469ca6f15361449bd3a642c0949462fa2f77da576c3ff19c133. 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/JPV431900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23cea29ffd5e6fd4000ffbce6b5d090e326d93cd70d9800264c19deb592775e. 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/JPV431900091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b563306b2d29533aa23b05d50cfbcea16acb81f265658ccd2efae45191f2f9a. 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/JPV431900092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11705b83a86fdd246060c4d0d98c60f1d120f027a927e753e3267d0319e4d27. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPV431900093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58318bcf6709c18d3d8c817f9c306d0bcf2b7ebd03f6cbb2065079ba92f294d. 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/JPV431900094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd780e51aba6c90e70969d297c5d38922249957db8909bd6d0d46480295c9bacf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPV431900095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341212c7da825b48cdc644f4c0b6485bb8e0dd7e4724de63f870b8ba8bbdddd7. 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/JPV431900096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a15a1c55190340d50c125567cfc131efb4ac3c30cac236e5fde1638f51d7a72. 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/JPV431900097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f3583e2a63a16670f9c79b2b3ce17f8596fd1e099fc7693e7fa0b37d3b1217. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPV431900098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd68f83247497d17d69724d2345841cf9b74fe7b3db526529cfa3ab148a3f7d2. 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/JPV431900099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4745c6d2123bff11bd31bf634b91eaed0db6216a0d6b82c32fc59818eb6607c6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPI102302268.