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 0xb6689fc22edfec195337bf97d9e12a21489104dc4431d08797334c331f83d8b4. 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/d2f622ea-4f32-4782-a2ec-b0021fb3fade.json and https://artists.proofprofile.net/proofs/artist/d2f622ea-4f32-4782-a2ec-b0021fb3fade.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 0x70c6cf7f6ec4932e7bbeabcd54896348539fe2e2744db220251e53f8d2d5e4b0. 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/JPR502407655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff9f3e38dfaef17a9d029cb68a8e82e83f940a774adb39248e2a8f79b5a7d4e. 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/JPR502407663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd846320394d4e04f39624b540181026b774ef98ca2276e9553fc95509dd1d7d. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:40:26Z), 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/JPR502407665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8a3a8b98fcd91694642b9538f868ecc8f18aed8fbc9a6c118f2691e76b997a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPR502407669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e4aa1b66b3eda9dc25209e7fdc4e09a4281a6335e782af93e0f200b344255e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPR502301648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67207cfecf84fe9b0015c6e79daecc8e28f827795e3f16d6c539a605d942ea9b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPR502301649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcd8060eb2b756a23cd8eaae336ec3a64619c228063a92c4afdcee390d47b60. 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/JPR502301651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a48329ba9c79a5e3f3c4dd4137569ae1d865a8454dbf7ce281b9324e9b4fab. 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/JPR502301653.
The Promised Lincolnation (Nakuru Aitsuki Board)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a8333f01eedf3a740476ef87f8d5c33dbaba50aa6eeb1e6f42e533c88acc73. 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/JP92E2400191.
The Promised Lincolnation (Itsuki Natsume Board)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a8333f01eedf3a740476ef87f8d5c33dbaba50aa6eeb1e6f42e533c88acc73. 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/JP92E2400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b1616fe9eeb9ca796813c66701105592b8f8d2de1e0865267226809ee53848. 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/JPE302400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebfb0647ce6353bac7b9e9ded4d865c26b1501ef266e8b315c0880f60fad23a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPE302400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a462f35923f61e3138dacf4eeca43bd941d206607cd6b9fb3a78d7876b8eb08. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPR502402841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf022282f3c3c098a74e98135060f08dd5af2f28545c1b5ac53d58858120d9b59. 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/JPB602308646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7427ef7c8cd0752fec8ad9ab529e98c04a43616377ef191a7e781c2890b4e7a2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPR502300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6eea2114c51659441b8595a3d6aeaab688c7bf5560250aa96abc7192e2afc02. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPR502203443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09fdc8581f60b086043b4f8d2c3f2fb6cf0f958613214a24fbe70fb3a1e8ee2. 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/JPR502203446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a0ad27f0810aca1599ba77b7c82964942587e17a63b0aa61bd4ed56aadb032. 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/JPR502203447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194d8df2bd0811b6050e164122fb4850a50a60e6a97d585f074a0c6fe4d5b490. 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/JPR502203448.
Ragnarok in Remembrance (Itsuki Natsume Board)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8aa10daedd397a5836b7fddc477a666af65c48ddff34bfd1e4e08db41d3d93. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JP92E2300616.
Ragnarok in Remembrance - Ver Itsuki Natsume
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3deb2dfceb734e58d1f84a2ff212301835f02b68ea78bbbb29cdee309094bef0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JP92E2300638.
Ragnarok in Remembrance (Aitsuki Nakuru Board)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8aa10daedd397a5836b7fddc477a666af65c48ddff34bfd1e4e08db41d3d93. 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/JP92E2300616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8bccb4d86cfebfd82c36545e00f89aa9d779fdafb7111acdcdc0402259fc67. 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/GBKQU2006129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0eba466f4365423bef499baf272354a6184af3c8ae00cfa6177ac24e8446bf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2006132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c9a24e156b18af8fe4b5b96e2cd14d1cf9b94509039f0eb47212b37bb72b02. 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/GBKQU2006134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02a844fbf55b60e1983e328b0dcc9d234278a150ff8073a9143e6e54ff56e69. 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/GBKQU2006135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5462269ce01a6979a6af25e0e8e642fb36359564b78817fc60106ca824ff4cf4. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/JP92E2301194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a5c01c757539229d5084e8434fc19b4ea2c5eb3fafeb8cf72b2f2da4837486. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JP92E2301195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038238f0ed3a71e3f2e0d227315e89ba81819c19f2c114dae0f058a3a2fa3df1. 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/JPR502206446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140b1ccb1ea2fce96a236fb6ab6f65d612b95d2c7ae42a920c851af4060c5e10. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCJPQ2101155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548a0e581d0e76e71d8c8e2f981dddc8874e94d16ebb9d29607fffe2da5cda47. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCJPQ2106388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0203d5875e5198a2ba1d1ec47e4ccb45f42666c6ea07f27e1ad8649d67dcf614. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JP92E2301197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9585374fbf8f862abb5b2453bee2ef62549d16046954c0639630d5eba0adfd55. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JP92E2301200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6599d2667fe97f13f67ebbf475145842cf0b4732bdfaf23b052e11a343ab62f. 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/JPY792300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe637be74575b30652d322416179517d7c54e7e0de28ee06a92afa84e44f850ea. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPY792300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84f8cb9ca957a43fceba8b5d67afaf9639fd6fd7c51c6b35d14a920fd1c2c55. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CACWV1890934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07c0ac2d93533814e4bc4a203e201ff524cc7eb90a8f38f14b308c4a77ecc21. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JP92E2400105.