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 0x588adec6a1db073a5416c2b6c923b7bb256a1d713b3d64b64e0e1691fefd2990. 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/bdb10586-c93d-4c51-b119-10d25128b751.json and https://artists.proofprofile.net/proofs/artist/bdb10586-c93d-4c51-b119-10d25128b751.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 0x9216d75e9f29356f638465e4d0be5aa9d5311da7d625e0fae04ee52b759334f0. 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/DK4YA2112301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd842d9d7768777a92e30709240383b763aa360a396d47cc065ee26ab0d2e70. 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/DK4YA2316201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd878949e5a1a9b72a1fdddf24ab7b8c2ff8db11f423c0739e2df7df91c5287c5. 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/DK4YA2450001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0958cb5b88d6964adb5ee93171c4d9523a11fc2f8ed5be64d17cb8af95e831b6. 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/DK4YA2338001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb67dc040105deafe0bd9bb06ca58559d3fc2b9ee8fb2be5d737e75620954ab. 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/NLZ542300694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fac0a759ed3d26769e3b9fa3a35ce22fc761d9a825626b1adb2b1afd435dfc. 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/DK4YA2307801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa351689cb142fe0a9892f8816e58ae5dbbdc15f4ed8e8563bd5b4f1e4b90003f. 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/NLZ542201201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629bb9411f6152ff9e04b0e537c6644bbb01d164fffcb0f050605dc86a67815e. 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/DK4YA2294701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0650365808ef7b89eb22d84a7bca9c9ae4bf8bbc944c4f2207de4d3811f269f4. 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/DK4YA2282901.
Eyes for U (feat. Conor Maynard & Gia Koka) [WISEKIDS Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09473f0686e2405326f4d7c9d898a057a84469ad115d836aa22f665d5b90e05c. 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/DK4YA2121001.
The Best Days (feat. Tabitha) [Melsen Club Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c9240232e66a0ba1c7446253e749fc03f9bbc933e959d5d05c112733d21f7b. 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/DK4YA2130301.
Wasted Love (HADES & Chris Dumore Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c258312e956170bc955b3361bdf8f5070045cc832ac2729eec463646e0477b6. 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/NLZ542001907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8e11abb7cdea790ab233c6c5c922929b31275297de3ee2c3e62d47cee8ee12. 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/DK4YA2400151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a567538fce01b3b4329c4fe0f62965ba0d7ace43ed08c83fa98c2bcd7e708b. 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/DK4YA2400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a534923c5e8f1b7fe1ee81bc6ae98a0688d3020f4180348d8865149c500f003. 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/DK4YA2400050.