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 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 0xf5f651af6d29cb4e08c63f70ff794dbf24a1f37c54e390e0d5b5e58586ff0859. 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/ae03bbb2-c6b7-430c-81c8-85c7c1727c47.json and https://artists.proofprofile.net/proofs/artist/ae03bbb2-c6b7-430c-81c8-85c7c1727c47.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 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 0xd6c0553c0ac41c4826add0de0ae93e783545ba75d5e4bbc28a2e695be55ec87a. 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/DEY472473064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816f80310b8cc5cc4aea71666055fb6e64a8f95c85feae19d66bdf9e0894361b. 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/DEY472473065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76dfc6284d5c14e5906b3dbe1145f28aa84ff043c872417620bfaee53270e349. 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/DEY472473066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbb0df605125374ad400d4081d7fc98a76ae0661ed7e4ac6e9d48e82d45cf16. 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/DEY472473067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e05576ab1441e6bffaec8fae88b5ccc09c22481f2cb0596730cb7cf467d90b. 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/DEY472473068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bd3d46dd4a4354b659e64d2ed8e754ec22145a1ed8bb0a8db1474c94f272e1. 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/DEY472473069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cd733f5b8b6fde300aee13cbb9a5b31a57a4a6ee92a8f539b73f95cbd6ef42. 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/DEY472473070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bac097844e9d3ae8b5a0a5fa13af351951a95435b41632d8499c23124a1ecc8. 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/DEY472473072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d993ed494a4c11b005233ef7d1de2d98d61d7d6b37faff05cd1f2370d8c27c7. 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/DEY472473073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe002fecae4f1a9418704904a884263f57a71de435bfcd622eb785baf369a79ef. 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/USL4R1913966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ba8aab6101cbe344fb85724eb67ee89c4ab31ff2aed073c66e4fb3a3c44d06. 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/USL4R1913967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086b59a173c65c02c9f813d063735fbf77a1e26eba20bdb1af6e17f251e3d777. 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/USL4R1913968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68987f7d8e6846feec659c95fef25414a999c261d85d86fbc96db3d0dd970b4. 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/USL4R1913969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c71393683831c6c760a9dd140f7096185420c85afc14fd1357c7cd1714cf37c. 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/ESA011995526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e8bc88d04a8ba719e252f9e9e5bfd31207ebc7dcacc32594d9858b1c217bbd. 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/ESA011995528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34df9d7a0bdb208a6fb31fc77c76d185f5d8d6687cb99004b9cff63bd2286963. 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/QZTRX2476921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec27f704f27b1e2d6f784bdfa856317037644bdffec6197a5a781b47462e70d. 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/QZTRX2476922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7786ce74823b3db9aaf50a2414c323042a10aa54c12e87982f21167a6715bf. 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/GB7FY2022030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3a9c8474c88874103f7f5aefc2891c144a34d1f3f6ecf6b2553490abc98a57. 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/GX3Q92161544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eed4915d02f5c8d940ef59de3cc10e12ccb9a807cd075f43003ba3d8282065d. 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/GX3Q92161550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d699ca050fde502eac52045be1b8e54b6b2c0cfa311d6bf9ab3a0a19c0b0b3c. 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/GX3Q92161549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8eeabcc6f24c382068587258360d3ec5e283cefe1e2118fa06209c1e0bb6421. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/GBSMU5443884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195423b53bd464855fc86ad78b9d494cfd7e37ebbf305e64cbe38d35377f43a9. 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/GBKQU1744724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b57aa633ca9fb35215027a2d5f49b0d8588918b8fa3746975f96788253bb3a. 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/GBKQU1744727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2cfe54d402ea6c94b300079d7c2e005e6defaec943eafcd29e5bc77bfa29ed. 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/GBKQU1722179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbd40e46dddacfe11821b717cc3cc80be8a0dd2e069671f17acbef7fde24196. 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/GBKQU1722181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e4821b82861c1ff8961e96139783e8945015ab983f2f0cdbfff234a8142a58. 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/USCGH1779340.
Bukowski's Waltz (Le Blanc Casanova Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ceef3dd5615802f0010efd2da444b509490d15f9a96cc370c9ce7b0d498a862. 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/USCGH1779341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010d4456940df66e5dfc520b4ca47a2632133cc411656583765067c9dd42abc2. 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/USCGH1779342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ef493725be565e38a13c3084addc347764e6413320cf2225738e877689cdf1. 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/GBKQU2233898.