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 0xdda41d20a02c3f5af97dcd54492ab4f911e3541563f60e5c6914c93a04522f90. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f03ef462-93bd-4d70-b18c-de90abd41e0d.json and https://artists.proofprofile.net/proofs/artist/f03ef462-93bd-4d70-b18c-de90abd41e0d.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 0x22cfb170578e315d5591d9e1a9a5cce52d05ac4d72e5bc4cbaf588cbad5c9a7b. 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/US83Z2490440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25789916fa2ab6e85269dd104693a7662e19d0417ebdaef8e0dcd48e775d9de. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/US83Z2483676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45145195cfa6aa6bb5512ffaf5240e1562fcdd8a545f89b152b38277d9db46a. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/US83Z2480258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1539e87dc141c94e10bb3b812790adfb9e5a918f3ef4c515b0e6401d8a49e802. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/US83Z2480259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafaf85b4a518a1a66f5f216322837c3676c0fdc18e8d0ff5f6aa0f910fa5c837. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/US83Z2463645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc921b35d8cefadf489ed947d796bf01312405830ac6e4d71b1aadd2688fc1a5f. 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/US83Z2351162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece4544237e8d1effa20ee384d2dac71226550c62ad5c37691d305f163e6dbf2. 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/US83Z2457050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f626e4684157a06744d146ce045bbcad6baa0a8e0f58f803d8c7347b5af4c17. 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/US83Z2457052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3588b5589d12c36f463189e16d9fb622d91c90f5eac01e14dd36307de08e5f66. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/US83Z2351667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5800b09884a4665e682229016466292dcebc9db3d34983946a9f19b07bac0cc. 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/US83Z2307559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0e5d836432c9730e894c3010a97cf51e5b2e7b82559beb4d0c0ba2df1b27d5. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/US83Z2321927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b406cf91dd1f27737dc5d4166e3ac7e2dec430891b79ea99253d57edd4cfd5. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/US83Z2236059.
Vanishing Point Revisited (Alfonso Muchacho Remix)
Strawberry Yields (Alfonso Muchacho Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacaf1bcf369863d7e66694ee1ba3da3a4defdfaa25411d1d92549883535f7dd. 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/US83Z2533944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b5d9da675379d9a3c504844730e44d3980a2b2432167356b664ac530c832ed. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/US83Z2533941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968b220dc1bcdf63972c8919e076084829ab2c1e88b37c7a4b98dcab40c2307a. 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/US83Z2533942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8c4eb67a657da4a7dfc6ba10ff7fcb7b97d0a503369ecea16e5d8c9e552fb7. 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/US83Z2513631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba62e8e478b9b254847ab3faceb8607a23618b8ddb9d6540e42c017a579f950. 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/US83Z2513634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e21c8d408b5d7c51be2d167930b63887ac48847ecbdd570a8583ce1571bfc1f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/US83Z2513632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8094b1503d3d3d884ccbce510f8e319c8c2d8d4a240030c889c7fefae90fc459. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/US83Z2507357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fe52708d35af76eb5793cb3f68b6718fe23417cc5346758408ef882dda593d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US83Z2507358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd045f8df910487c1994423ecbbfcd906cbabdedc037a115cf7ff41a8cbba9515. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/US83Z2504163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc851a35d9dc5c75911a4c70f0724069bc479203f4d4f12b62fdeabd7145fbaf2. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/US83Z2504165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa859140bcdcf6f9ca65fbde74e6aabfe78c32d72d5ae4a83d121327ae9af76a. 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/US83Z2504166.