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 0xc11cb4f9781871712a947cc40ae786a32b1e91d7d119b73ca92bb14ec9f4c2b4. 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/71a0522c-858f-4193-8e16-70a1c7c81900.json and https://artists.proofprofile.net/proofs/artist/71a0522c-858f-4193-8e16-70a1c7c81900.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cuando Amanezca (feat. Danny Ocean, Justin Quiles, Feid)
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 0x527d1acf14d4a6a613b76437a4bd4b2b1213cf0beaf1e7c97846bc480de7129a. 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/MXF152000161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1251c14eb6e256523c706346a77bd6863ae28a4eec269b7aeae060f093666f03. 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/MXF152100146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e8551ac09ae6db2ea43adced5f3dc39cb3c7eefdec8214fc4a57753cebb2b8. 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/MXF152100476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe85e91abed079e192b70fe8c8dbebbeedd57dd78714aaf31c3b59d5d294af9f. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/MXF152100502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb181d498c30d283edd0c790d381f98c3b3a5c980dc00b0505ba8be062641460. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/MXF152100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd031a51f5fbc086eea4a378d5d594881456a34b12a78e08e2502ae3b9b2e9c36. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/MXF152100506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17af47627cd118f65989dcd9a9679dea9a4bc8877456351f9a5305c5122361cb. 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/MXF152100507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3ec8673ba125c75001a7a0c157029dd624bf599d62ec3741a7ad44aa5884f2. 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/MXF151900416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5047244d8faf5a6a9f2a2e9e2621b1f8553099c69b6d60220b50f3e57f3f7670. 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/MXF152000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a2bfb9021f02b8560d6dca8f42c9d48d695f93e4e1677357ed3df546c87e25. 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/MXF152000499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb181d498c30d283edd0c790d381f98c3b3a5c980dc00b0505ba8be062641460. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/MXF152100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895a62c0a42a37cd5f773a03e62353d469210744b7ce3d47642214fcdeac31ea. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/MXF152100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a2bfb9021f02b8560d6dca8f42c9d48d695f93e4e1677357ed3df546c87e25. 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/MXF152000499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6ad5767d09133eaaf52f11db2107cad111759e7ab4575a7e676e4ffb2ddab5. 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/QM6P42099743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5047244d8faf5a6a9f2a2e9e2621b1f8553099c69b6d60220b50f3e57f3f7670. 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/MXF152000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d8302bba60161efac4f843b3b58d7b21aad0109d01f0977d8e613e4ee72021. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/MXF152000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3ec8673ba125c75001a7a0c157029dd624bf599d62ec3741a7ad44aa5884f2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/MXF151900416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bee659b5dd725dcd6c880a9de264cddeba3d4ffa85056070adf18d08da2e4ce. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZ7R41950521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7305c2d578a2f6ac53ccbe03a39d4b95c050f8a6db0c657e50cc9e5323c7f9b2. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USHM81866775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eddb1af8514f80678d2a9dfff72f8ed7bcbeff3d56827567fbe506f149dd819. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USDY41881649.