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 0x826e9e76514b51dad5ebdbe3588b05a9a7704c70d1bb9ccef890092b09082505. 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/a562d60e-220a-4536-a39d-3760d083d260.json and https://artists.proofprofile.net/proofs/artist/a562d60e-220a-4536-a39d-3760d083d260.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 0x0143081bf82069626d163e0f0d1d6498604856a1f4cca18c7451dbd526e1ba6c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCJPD1555889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa0c8b885cae4eb7c7f86f5ddbb96b10fc845eb781e2a35d6adb801c4261f5b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:33:45Z), 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/TCJPD1555890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e05f44998117d9be74026daa1773e29684acd0336036028db0a4109b954c8ba. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/TCJPD1555891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954a3ccce0aad208f76a05750dbc0a9164c70a79a0c74a9b10d4bea1776cd3b4. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCJPD1555893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1b9024448fb26ade4e483d039fe885b33f8be6ad43383bebd3bb1da53e63c1. 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/TCJPD1555895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5d4e93f4c7df7bca6c134fb76453838d9793bad2985f4ae2b5dad5f62bc069. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCJPD1555896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec7752c1e5fb24bf0fbba939d94626d1be69716163339ef59657dcf83db40c3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCJPD1555899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0274ca51cf7cf8b1504303b6d89bd4df58659cef5656044767915090cf4226. 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/TCJPI1821871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc430366d6d8cf6582dc7b3036750c71631801cfd1afc601689f3011d9d6c30dc. 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/TCJPI1821876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe9519ec4850ffcf8bca5f709018873c269d5f277dbf4cc54f8d641617b92e0. 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/TCJPI1821878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557197e33ae5588004704b582c2cd255de09159b6f7df0f40f28715eef1fd24b. 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/TCJPI1821882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46fd8b40de6f079c5af8d09a27b83edd1ada2d68dee4016898c6acca0abec00. 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/TCJPI1821886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea81589fe40d7c257d58b54e573f945058c6c62e1226c8b79f0d57b366b8ecc7. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:36:21Z), 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/TCJPL2060616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55efa786050345e1ba11adcb4cc7a2efe9d877879d6af0af52f707664d09d5b. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCJPQ2129927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc054affa36dbb3ff821160c35d002584c4da01e5a620f68e3ac2d5979e3f11. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCJPQ2129930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba4e2edeeaf389233456d526d5c439837afcb6e894f43527e7c040f59a6007d. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:21:42Z), 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/TCJPQ2129940.
Rebecca never goes outside (feat. Itaru Baba)
Fantasmagorie The Ghost Show -Original Soundtrack-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b560113f8b63ec4984cade147debef00078bf4820c51d635a640017ca87041. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/TCJPT2205629.
For the Griefs Of "Elsa Who Was Embedded in Ice", My Dear
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960654d7e07844475986ff2eef303ec72749ceee581d404128a5c3ef5ba5f7ee. 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/JPZ921507685.
Blue / 0 / +9 (feat. Itaru Baba & Aoki Yutaka)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7753921d3bebecc9e76e8bbd5441884544ce2eb44100a8e35d4138665100aab. 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/TCJPX2312848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fcc112532b9bb60e735e1cf069baafa5effbe212b1236a09f9b8011a830e34. 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/TCJPE1619199.
LAST WALTZ [feat. Itaru Baba] - arai tasuku Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f75075834b13266b9a6a15d38199f6af5b601b237997b37f6a3d3f262b76102. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TCJPG1741153.
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