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 0x25a74b936a1d970fe3310a4a6c8e437617f5072459c3e53e153a7bed96fbd131. 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/931b8413-cfbc-4704-9abc-a94483e861da.json and https://artists.proofprofile.net/proofs/artist/931b8413-cfbc-4704-9abc-a94483e861da.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 0x36c497d9132812c2b2bb7af0d8bc6caa6d0aed4b6b07a4b38d6e391bd8175c78. 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/BK4DA2307747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ace7206035788bb71b43e043585e4a5026dce8003dcd62bec2756990a41ac66. 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/BK4DA2307748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ac80eaee09124f14ca3429ef08ca66d2b029f1672ca9e4667bed63c0d5e0b9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2307749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee06e0d4edf3f4674f67b35fd8ccaf0e9a5cbce08ee875ee84b7dbd71ca8303. 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/BK4DA2307750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf280560c81698bdbdf3a7301f4b692375beb30ef7075f47dcb17bf3a1d5014f2. 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/BK4DA2307751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd506472a080a4f876f87afa8996bd62b71ebdebf7878ae9329ac6401a35de7. 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/BK4DA2307752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8c99c73be6d0cffa97b9322721eb040676503bdec00810196da680d1fcb308. 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/BK4DA2307562.
El Patio De Noxo Presenta: Prok (En vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb155694fee2b7a64541b7cb059a01dabc2afb9539397df9d105c8458552db2. 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/QZES52440434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa0afcda65c009dcf5315186c2c2e4df2a619b1db77c6427f0307c1fa435330. 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/QZES52440435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16697a6cf32d13c86ab523b79f457a223961532d69fc21154fe70969791892a4. 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/QZES52440436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb722a950653aeefa3304bce43b9035e8e80c0abda9a37ff426ebd7212271c6d3. 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/BK4DA2327236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fca8ceb1ac3fd88a944cbf5c02cec36e87e346e24075a26f1823aead6e9fe6. 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/BK4DA2321476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7c73454a3356cd6dfe6142f76656225e4fb64258dabb3c44532ee1a2b51d61. 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/BK4DA2313384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ac80eaee09124f14ca3429ef08ca66d2b029f1672ca9e4667bed63c0d5e0b9. 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/BK4DA2307749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8c99c73be6d0cffa97b9322721eb040676503bdec00810196da680d1fcb308. 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/BK4DA2307562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f28f0b844f4affc98019efcba454716d779db98e2b0639bcf8ae11d6c46fd3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2307229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b4f7c2f09c0df1cbc146e619c6449f48b6028711584c28f35403aa094d117b. 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/BK4DA2306123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe557dd7e36544cfd32e0b4e3dbac0fc21a7571915f8d1251d28825d5d4d7e22. 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/BK4DA2426805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfb2c4be0ff2cc0187dca5aa05c0158de1d782a203ab1b99a40b8f0d6c00621. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2441136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ff83685c9e7507756645ffa55b1a1e7f9296b064b7b328822ce52234361803. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARGO92401001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ae6e7d47ac0fbc50ace843761f187466f0408ac71c0866eff7880294318262. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES64E2454827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80ffe564655764cc5316b34bdb48f7df556c0377d0edd36e6c0e991b6f20cd4. 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/ES64E2496115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01aab70dd8574b513000d33c004e2055b9a0d201118c8a8fdd41284803127373. 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/ES64E2466723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8706e94cc4a052cee09ff433c9942627bfa6f20002129c03e5dce35e6821501. 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/ES64E2483838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf155762646c3fc73d25256cadc1cc001a835b4b67f00a40bf11e5aa12b04e7d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES64E2496116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961bcafdfd5ca5e138d6059fa13181b240a6e04a3e752f73d4c8a05bf66e6cab. 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/ES64E2472853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8d3348f9455d584e2970f78c5648118bf88ecf171c4ef46f07efa51d5f504e. 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/ES64E2496117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d1039584a57ba96bb32017705ac382cc6f9ceb8bbfac8ec247fbc74f6e8eb4. 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/ES64E2487834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c6bc3d9654fe7adb188e840b026d26ae658616d9b1dae27972abea4db7cf7e. 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/ES64E2496118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06cedbd07d3c62f8e34119a6b125c3f2debfafedf76952a5d5ae8ba4518110b. 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/ES64E2496120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799351e10570cd8581c04a30b077cd0b3b9b531161610d91ebf480fa62480dfa. 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/ES64E2496121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a8aa7d20095f7ffff9bb719126f4e4b25f248a4579af74ee81e4a193807cfa. 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/ES64E2496122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf361cf983de75d07a0b569b83b2718aaecf750f94bb539de63d6d0cefc5692b4. 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/ES64E2496123.