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 0x178f21e88b47df5273ce39241ad449d3f9f778f451d2c0868df2a1fd4fe3bbf9. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f922540-470e-4f9d-909f-0a688f24050c.json and https://artists.proofprofile.net/proofs/artist/1f922540-470e-4f9d-909f-0a688f24050c.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 0x1814eb21c1265a5015453fb7f28e324c8d1bedf6575e7123861a77c513899194. 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/GBUM72403850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8c2a1810715d49488fae75bdbffa770f98dc57821d0d91dccb9c52ece1a276. 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/GBEXH2401864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2286d1d40ffd875f415dd919ce47395724b6273a0f990f4f20bcdcbf55a3580c. 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/GBEXH2401865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef69491cf16bc115e0efb1c9479bbc89c907b5645192431fe9c7523cd37ac954. 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/GBEXH2401866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f76c89b9eda7113a292e10caa173328dcbf2c55016d3657e18f431b31f4f5b5. 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/GBEXH2401867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddbe9725316f46d26d570e26abb934f3cb35ccd27e0545549b523e074f3e01f. 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/GBEXH2401868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b7b775eb160b7fe450fb6b1c9d01cceacc3ce53b8f8ecf9682a891d7c6efac. 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/CAOJ22400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f118bf988bc116081725f9384c310d9129119ae3d70589143472f0743997622. 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/GBEXH2401870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff80225fd5f5a1efc40468d16219baf66df7e782eeb08ff6c5108e46b44b323. 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/GBEXH2401871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ac5ed73941a10a6390a802fdc778840084189d342504db44c54a4aa32c77e7. 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/GBEXH2401872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaad3d204867cbdfc9e1ab394667f92c06af110aeb98ccd38fe6e91783d1d479. 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/GBUM72403851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075c254ed511e591f6d0078105ac945ef491f944439a1d5ce2e495aa2430526e. 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/GBEXH2401873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bdf128a5cf89711e641a976cce33154f46701ef1524a7b966a3d469a9741ed. 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/GBEXH2401874.
Windows 95 Anthem - Mixed, Chloé Caillet Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7113fd15d8f8840664831683a3a1c2b0e0ee85c12b1ffeb9e4bc1465ae299d4. 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/USZ4V2400232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe719b09433cf41dd8b9ec8a3e48ef62664e33e3f2f74d0e9a0218357523066b0. 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/GBEXH2401876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8df84aee58fb439ff816734c129b3ee3d5fc2155a44d9692022b3f1b804d003. 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/GBEXH2401877.
Rhythm Is Easy - Mixed, Ché Luca'S Lucid Rave Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9e8eac2b1cb3e9443f9eded462f666c0f10ee1f59b39188d051160643fca58. 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/GBEXH2401881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8441f137618f4565e285f5e52dafdc447089f941d2d8e791fb71b57f1f4543. 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/DEY472570068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab0682d42f7ddde7f309cbd06e9581f480a0c289908e7f44e2100e5f59f522d. 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/GBKQU2514488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970a0efc8f82644db8353d6cccfde67dabcfaa0637288c02754730ce2c76397c. 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/GBKQU2514489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7c18f26cf87d4d8e6ed2845e878b29e2ae1fcc5c423c75be96b04eb4e6e1af. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:47:36Z), 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/GBKQU2514490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09108fd05c6f34999689febaf31bb3cf13d55c3b7655120f537993da4efbb0b8. 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/GXCP32400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca6d4fd36e1beebadc11de4c7e96a9ae6671f2ffaf7fb76d972e73f3f74b385. 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/GBKQU2422985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea8545b81cab1e2384bde98f1bc6f39d6ace0167e8b1b6f7d8e9682444c20a4. 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/QZWFL2304359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a97c19afafb69e867eac4c00129cf7e7734f970f6254bdb79b8143a2e3ad464. 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/QZWFL2304361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb549c37c6e5afc7be01ed324dc5491803753123445f979c559e78ca77802e6. 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/GBKQU2316604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7ac9fc6b0c67659444e9d1e4ea8685340bc6d23707cd6e7df71d1cebd6de21. 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/GBKQU2316605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5eb3277c0a3da80663ccf1632c5dafc1de8343fddcdd904a747913bcc1b1418. 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/GBKQU2316606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a7947111e2b5737ed7c1108f7053805bed6e14275fedf91a88301fe6731ae6. 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/UKACT2232679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e4ea5c0d98224e2aea708653e900ffcf01c9fa35ebaaa47e0f85634f1017e6. 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/GBLV62204527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62348afc5271983b082db9df0665691dfcd78ad5b698ab23c0916de06605f96. 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/GBLV62204528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd73d3dcd7571c162d2e08fdea3913ba63e90bc37a456524d48fdb0f6ea6da4. 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/GBLV62204529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69788c580f1d2f57494c0b35f386de5fbd3d44f8157fe764cdba988552f0598e. 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/GBLV62204530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af03b6e97992f647f6612766786bc6279bbed79ba5182d2bbfc9a3367b237c8. 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/GBLV62204531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cc9c55eeac48516a58c10668c144f0c1380f1aa7c106ced11cdcdebecd836d. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBLV62204532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fdabcb88aa48e8db81ec7b84999c19dc1ae45d1ad1a6977cf2c1c54f593120. 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/GBKQU2369052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253556d550eeac90c343f2f8553094655530b1451e6e4d3419fa3aa58da15b53. 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/GBENT1666576.
Re:Confirmed: Tech House Selection, Vol. 23