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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 0xf63bafe5a3ea060c28637da5cd87785769c7653a3cd411c871907d5cbf4b3c81. 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/d09abec5-1809-4740-a198-9c450a92e52a.json and https://artists.proofprofile.net/proofs/artist/d09abec5-1809-4740-a198-9c450a92e52a.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 0x722701662ac99b7bb9921dfcc3dcbe080c066b48b680a96d4909b5730b34c7ad. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR9W12132245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e436b518628130ee64f1e8cf0b40f8f9749a00af066f0a9e55c507932f58d4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR9W12132244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4295783e2e29a17eb970dc15f782fe95c440a410077a2177a9ccd9618b7f08c4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR8FB2203300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07e21fd17a383df2ba66cbd1d31587a82fd256c0a9569a19ccc3bd2bf69dc17. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR8FB2203330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f6e0017a0c7733f2f4f6d9e23bd677f12a7ec0571b08ca3927798125158c0a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR8FB2203340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8daad35257399b077aa8d4c36b638339a556da2ac81922fade8b6badc22db9. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FR8FB2203350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d71f194cd45012636b9129afe4dd0d8edf637a80e482fc1e3acd5062bad0f5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR8FB2201600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bc73cc51b4ace00c745c81edfe1ff66a33a8e0622dddf2f0f2cf093df606d3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR8FB2203380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec2f7979556cc3ea454263036af5770d9da2714f23a93b34a3e92913d02d8a6. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FR8FB2203400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37744a6ac42f474300a74915059b007f406216aba52770d71f042d585c3ec072. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR8FB2203430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc854c24fa384f3d14dd6c7c5a2311970220cc651a83ec654d6b7e14a0e862624. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR8FB2301300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004dea235fa18d4c696787406a3d263b66c81e941b613d28b87f73789426e0a1. 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/FR9W12132239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8a06c427aef57e041ebfad953de19257a60debd146650403455d4602256118. 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/FR9W12132241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84ad9623ae7d39452512e9a2695bff60ee168790aa3bffc873b734c0cfb842b. 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/FR9W12132242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e436b518628130ee64f1e8cf0b40f8f9749a00af066f0a9e55c507932f58d4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W12132244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722701662ac99b7bb9921dfcc3dcbe080c066b48b680a96d4909b5730b34c7ad. 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/FR9W12132245.
Rider toute la night - version symphonique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764810ed9752710e6fd5f04d8bae11ae857aa62b47631b1f754a83e4e4d9e587. 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/FR9W12132246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4267f2186b4cd716bd121b58dd0c8b7500ae7775595d815bc46e23a48f66404. 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/FR84R2400340.