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 0x2cfa1baf225b75b5782b55ae3c453d8dc60920f197ddc67ced2c7da07de84dec. 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/69cae4bd-4761-49ef-9d45-451fdb60ceff.json and https://artists.proofprofile.net/proofs/artist/69cae4bd-4761-49ef-9d45-451fdb60ceff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Joji Hirota and the Taiko Drummers: Japanese Taiko
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 0x22743242a2c4d5bb5314bdc385df4668f69e8229acfb3b77695c839a769894e7. 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/GBCKG0600326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d7778f2f43c8225511f6631ec1b3e39d5a112aa39d68f107ceb762b0e11796. 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/GBCKG0600327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b12c0d3a95efbd4372bf667342ff9ed0efa3584e82d4aa2d9ba8ccc2ce1b8b. 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/GBCKG0600328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f44ae0c688dbcb4270633a2890c251ebee9d8067d1806b60c5ef9bc1bdfbe56. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBCKG0600329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e65eaa8deeb476fd5f79987e6433a5dd6e2a1d3eda8ed33f7bf4f8dbbaf742d. 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/GBCKG0600330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfb73e5c9c2b217d1532656771fb73d729b898a3b355babb74bd1ff286a5082. 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/GBCKG0600331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aca960c61ad39d57b519a0ec44382f9f1865d97ad6d091e4863ea366a5ca5ad. 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/GBCKG0600332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d337440cdabb199f747cf0ab71d2c48a8c862aefb0cee81d5a9ba1c4f5a6a6e. 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/GBCKG0600333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274df518469b36e033d8ac7ce460e27174239c6c5c2c3c3191413536c28cb29b. 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/GBCKG0600334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1fbb628b460374302f515b3ca8cb3db55c6e558d6d664ed0d2bf59bf9f96f9. 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/USA2P2321908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e366d5a06f202641626d9470c21dba3b9574deb62075de40837360fd2a62e1f. 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/USA2P2321911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2d799502c53bd329ca5349b8e4a881b0c29fc312e166e9afd9bb1da00821ca. 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/USA2P2321912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22743242a2c4d5bb5314bdc385df4668f69e8229acfb3b77695c839a769894e7. 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/GBCKG0600326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b12c0d3a95efbd4372bf667342ff9ed0efa3584e82d4aa2d9ba8ccc2ce1b8b. 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/GBCKG0600328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779854ae45a3216c3a5dabd214ade737cd7f7926443b9064417a2f2ecdb46cde. 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/GBCKG0500755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb521d93bd59143afc9e948e6023ab443dfcf0ed66fbdb60f892330aad9fa8d65. 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/GBCKG0601269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfb73e5c9c2b217d1532656771fb73d729b898a3b355babb74bd1ff286a5082. 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/GBCKG0600331.
Yoshida Syuku (Yoshida village) - Sairei (Festival)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec432d92c6ee94ce2c05be6f6ffdd6f5795b8a1292ba26ae2ae665fd7d701660. 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/GBCKG0601261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c1cf1e941270ce9943f5dfb4d58a6e946762da8b7cd5b57d126f6e251937d4. 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/GBCKG0500961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a8009c4bddd24da0e9ace154cf62ef2c7e6c224e392934d1e6b76c0d536d80. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBCKG0500757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecffacc7a0c4af15e3b91d58a5c442cfa8ec25b7762fc6149fcfdef21e9b806. 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/GBCKG0500760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d7778f2f43c8225511f6631ec1b3e39d5a112aa39d68f107ceb762b0e11796. 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/GBCKG0600327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aca960c61ad39d57b519a0ec44382f9f1865d97ad6d091e4863ea366a5ca5ad. 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/GBCKG0600332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e65eaa8deeb476fd5f79987e6433a5dd6e2a1d3eda8ed33f7bf4f8dbbaf742d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBCKG0600330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb521d93bd59143afc9e948e6023ab443dfcf0ed66fbdb60f892330aad9fa8d65. 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/GBCKG0601269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22743242a2c4d5bb5314bdc385df4668f69e8229acfb3b77695c839a769894e7. 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/GBCKG0600326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfb73e5c9c2b217d1532656771fb73d729b898a3b355babb74bd1ff286a5082. 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/GBCKG0600331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecffacc7a0c4af15e3b91d58a5c442cfa8ec25b7762fc6149fcfdef21e9b806. 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/GBCKG0500760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f44ae0c688dbcb4270633a2890c251ebee9d8067d1806b60c5ef9bc1bdfbe56. 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/GBCKG0600329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aca960c61ad39d57b519a0ec44382f9f1865d97ad6d091e4863ea366a5ca5ad. 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/GBCKG0600332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc43b798a1bc1791bb58e7a79151e9d40c46edcf247bf1776e7b89177ddabc1d. 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/GBCKG0601266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471b82b31eeca8455e62e26ca5ce124a9d906f4f312c0332b97bbf1b432e2a1d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBCKG0700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac345df9f77364c49a55314c86ce88c49e788da6ff1977ca9815ba3c3eee89f. 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/GBCKG0501312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f44ae0c688dbcb4270633a2890c251ebee9d8067d1806b60c5ef9bc1bdfbe56. 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/GBCKG0600329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d49d87d2a7d83541ee51a1129c619f8c3678cedc47342c875f721ee4bc3de4. 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/GBCKG0501298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755486ad42006374dbf3cdbd0b48961720ebff5b41e329a0477bb80f96723be8. 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/GBCKG0500148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8404ac36f3d55b471aacd79f7d17ae37a1d4a247290cd7c9f714a2c20a06d3b. 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/GBCKG0701149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3c2275cb1479d885d63dabe400dc0edb73f7c2f40dc1ad07efd06a9a3a2160. 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/GBCKG0601408.
The Most Essential World Music Percussion