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 0xe6f1cf47b0a3948bcad7ad36af496f17e499d224589d3b1864e2262da610fb06. 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/0a30c511-fc90-4fd3-9555-8563924867ee.json and https://artists.proofprofile.net/proofs/artist/0a30c511-fc90-4fd3-9555-8563924867ee.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 0x465e14c993da512bd8904507c30faad58d2f15fcdc8f8a9b8cbc549d34fa6aa4. 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/CA5KR2465981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee3979c6ee351eec9b87c53990b371b4512624856dcc3cd3fc7f8905f853241. 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/ES71G2407806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5f2a66856f9fd0768f543512f5714d1ab8c30f63253f6da524c5fdbe5b00ab. 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/ES71G2407807.
Hijuepu.. (Tom Gasco Remix Tech House Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f860da637eefd4e5dca2719a4d3b480eb8545b1e5751357fdec60da87d68a3d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAHP2327031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb3c6e4107c926a1a88d6600ec5efe721f0af4ecb14946d99e85ffa329efebd. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/QZTPX2357640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d062623327a9bacad57aab8b8046a82cfd4b6f18b60d6ef430babc8eb6a533f. 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/QZNJZ2363450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e77ea66f6d7997c9a27d2223cd4e16dd5f891f683396428f4336bab70999196. 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/ES71G2325704.
Los Caminos De La Vida (Tech House Remix)
Los Caminos De La Vida - Tech House Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fa47b34aa5a13df55569d25400625030436781099452af83776949aa6b719c. 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/ES71G2317433.
Tengo Gasolina Pa La Mami (Tech House Remix)
Tengo Gasolina Pa La Mami - Tech House Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa7a9db24edcab74913a23169b52f8616595c31629d070f855433635deb57c7. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ES71G2317003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366f102ed7042c3a595aa28a12fffcbed70a99a5011769c2a193d4dbe95e2592. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/ES71G2316688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e804d909bf2f564fc7b300c64785f11b0f0e1dc7c98052c85543e2e7582da3. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ES71G2307986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcac37b9ff267d0e728d72fc957495bb9ee9354a8780f94da92787d98415e0a8. 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/ES71G2306592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa65aa1ae0ca9825d8f57f892517a6ed79364e678c5d6b5bd7835f33a8d638a8. 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/ESA011848594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6d0990cba35d22f9ccf1b1a8704eac0ec62d5db5a67b18558417e39b481978. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ESA011989815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d99e8ff37a59ab905fd9cf0decfb3e93aabe177633cac659e328dcd3d36f78e. 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/ESA011966458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1eae0387b47f6e696c274ba923d1ce7eb48d61985bf96d5375b6e38d5c06cfd. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/GBKQU1734242.