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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81622dd13a18dd484e64ca8f8d018c6097727fa4271d9260d74f2bf031d10d8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9b73957-e884-4489-bde9-9752b0820922.json and https://artists.proofprofile.net/proofs/artist/c9b73957-e884-4489-bde9-9752b0820922.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e5d7ab5ae4dfd39426f66036b1aaea5ed676c9fe9eada883d37f148d8f1fcc. 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/QM6P42374102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8df2f17fe49fdcd93b44240f7675995ccc9059f2e08950f33328d1ef2f3449e. 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/QM6MZ2302405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cee6ea56f69b372484208024eb12eb7ed63d17422f9bb9835c78a9bb621084. 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/DGA0L2322097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f7c07bb20acca1de68d09b0f93c8a49ffa0e96c2623db608e26306bbe3b2be. 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/QM4TX2353433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad109d0e8980f01c57d1e70ba55a0a1283e6222791e2d01d5d350123074aa65. 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/DGA0H2323543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b6f348890cb5294ca07bf26b918dc8b51a1dc22256a5768a6852e1c9499876. 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/DGA0L2322099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7608b3e327e3e000da877e4b2e524643968f33c5012e67ebb239aed7f6b0cb4. 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/QMFME2230822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b114a810702282f7a853e7ff994315800bdf288c08a2aa89caac98cefe201a7. 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/QMDA62307263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef910de16b2a0899cf7a23d00b2358dcd8c001d56de08b39cc96cff6ddf24f88. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DGA0L2322098.
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 0xf1decefc4c721b38795afb344fe45f5594515330586c533a0c88f549e1460e08. 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/DGA0L2322100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f0969350e105a7535e1bc1a5dad49ea684569a58f909e02a37c0a24fa0efd5. 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/DGA0L2377971.
Bonjour Tristesse - Luis Ake's Tour de Trance Remix
Bonjour Tristesse (Luis Ake's Tour de Trance Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594b1ebf496870d6a05a7bda6821cc603f5dfeb077795678872ecaf2374f4de8. 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/ATUM72200404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594b1ebf496870d6a05a7bda6821cc603f5dfeb077795678872ecaf2374f4de8. 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/ATUM72200404.
Vertigo - Luis Ake's Trance Atlantic Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c9fb10fdf1594ddfd2a6a1a0e64c251ac81353b9d22cba2d818e11596ca2a1. 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/DECE72200481.
Vertigo (Luis Ake's Trance Atlantic Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c9fb10fdf1594ddfd2a6a1a0e64c251ac81353b9d22cba2d818e11596ca2a1. 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/DECE72200481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c9fb10fdf1594ddfd2a6a1a0e64c251ac81353b9d22cba2d818e11596ca2a1. 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/DECE72200481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6991c494579c78ebbf5642d44f1524a4dd54237b2b07895fa652c1a6b81e469. 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/DGA0L2424038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160ae3e9ddb40628ac8ab84176ae2bda29e3fc856d68d742b4d3f5e7dfd01bcc. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZNJX2110616.