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 0x5d6fdad2da96001dd144ecc1f6eeb9461f0da90e9546c6f637c3eac08491bafa. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aacd83e5-e492-47ad-a81b-ee319fbe7638.json and https://artists.proofprofile.net/proofs/artist/aacd83e5-e492-47ad-a81b-ee319fbe7638.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 0x9feb3903ec16b8b095c8d7ba497a58fbc4951c9e90b0b2fe4683ee10f1ac047d. 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/QZHZ52094109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a90a5be0bb3edf4c362535cd9da260720ed49e129c073e72ff7c499356128a. 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/QZHZ62015312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3447d50969677ce5a7c4e68fe19e0b9f249f8aafb70885372936f8828e574e7a. 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/QZHZ62015395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d59e5e0f46294c85317079c4ab7a28b50673c2f66657565df9c3edc9ab596a0. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZHZ62015487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a14cf7aa851eeeabbaad74ec869f46b49b0d66ed68fa42b7ab3b189378b56c8. 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/QZHZ62015765.
#Sádico - Diego Terán & Lou Flores Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39275c48ae09f4dd1a6c3b1f5e2a1c24d85fc7bc86b3facd659c623c2e497410. 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/QZHZ62015864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73e03e26c6f57e9d9376092c0660b7a3f642e8c9388b6152ad7e8d4014e7c3a. 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/QZHZ62015955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccaff391149d1c272b6ea962ca2804f282d4bef78d1ed25258b8f2b61318dc1e. 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/GBKQU2196738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ef2f485ee48ab677861f8b6c72b3a9d70fe74ca605dbc4fb16a3c11dfb5151. 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/GBKQU2196739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f196bd4975b7c74826fdba84db78d27e070f45765bddfa297bab335d2adfad8. 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/GBKQU2196740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc9c6569c4890a67062f88ccde2aafd4ae877f16bb50ce49598f252b74392aa. 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/GBKQU2196741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c91b66603aa2cb12bb84c9c974dabe315dcbbc1c84ed6437e50ae4f90c18b7c. 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/NLCK41064269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31452b2b2bdcd815b36f78f4da147359493fe0133226c7b228f58a2ef042a88. 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/CA5KR2070556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca17668cbb758652c1fe0be9305ba5afb3cbde4b3f564651a0b47d8948f09f01. 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/GBKQU1954686.