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 0x98cc13168c5d37ee76a5200bee27116b6d723cc902e87bef6008902bea815c19. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96c9bf03-2795-42df-a20e-30dd8c8313dd.json and https://artists.proofprofile.net/proofs/artist/96c9bf03-2795-42df-a20e-30dd8c8313dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
TROPICAL SUNSET BEACH -BEST SUMMER MIX- mixed by DJ NOMA (DJ MIX)
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 0x3df182cb898725b85b91ba66586ac78858421b03a36c21550399e982f88632a7. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FR10S2598020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f84b92f1640f92a6ac7b80810634136100be8e5fbc49d219cf3976cfddfa36. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FR10S2598021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcd61f56744e4161ec3224b2ae3051421a80a70f8f4bfaa3e0a7e04fad7d3ff. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/FR10S2598022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fea71ace5be8ab85585dade49286492c191a352cf58a83352713136e77eb09d. 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/FR10S2598023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ada39fef32d2af14c515c77e1cb5e771cfcae75010e1d98418a4ad43294294f. 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/FR10S2598024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb413eb3382a52a9efbe7bbbceb2f76cc742fe8f1ef67f52e35f705ce81f75ffb. 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/FR10S2598025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e0def21848a11d5b4ebf3ca75ab1fdcb4f98830b5b9a15c5802f9347ef250f. 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/FR10S2598026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85977937f67c2e406627952947fb2e6fcb088f2fdcb31593abcc08a15981566f. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FR10S2598027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff78c0b22b70289c10dbe7a081d04f9e9befa28a863105c74986b6f7643754c. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FR10S2598028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aec76b168c2818f5de100fcc0e6dc97f1ff2fc5f46eb9ec98b046eccefccf4a. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/FR10S2598029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772be414fe88c810e6025eacaebb266b026e22e48c3b9c0293505175cf37288f. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FR10S2598030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe7dab24c0e2a0dfc363c8be3978dd72585009eb551dfa765af7c85049fff3a. 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/FR10S2598032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6390eefa422e0b3560a82f74f0c0454d53524daf8830f5b43d65744460b49dce. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/FR10S2598033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad144d350137a6bc52e9e21418b6f52a504242fcf10943b42d17acad8c6f3df. 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/FR10S2598034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96785ba6a95e4f26bb96b805b5b4204072ee7e3aeaa30a51e5188525553fe85. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FR10S2598035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9547b94c795d0a4eba9bb51fe7a2f1ce794d78c00ecb9635616f82f4d7756fe. 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/FR10S2598036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611fe35f9b075e01d21379fcb542fcbca3235a9113c3ffdee7482bd8c0fad160. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FR10S2598037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4aecad63d2bca609a128ec41466a02946a81855a3bfa73a4a82e67a84dccb1. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/FR10S2598038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfed512947322a30b882218a2fea38633ea85ed2c0af79bbdfeb521e6d7a7c3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FR10S2598039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892d533e8c2498152191b377328cffad90fb5bf24ba770ad989b5f0d7d125c69. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FR10S2598040.