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 0x6dc76150ac26cbf48a6d9b9ce4169eabc72c5aea66183b7b77835f09ec98c858. 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/6a9d70e9-dea0-4bd2-9a0f-de5da6a74963.json and https://artists.proofprofile.net/proofs/artist/6a9d70e9-dea0-4bd2-9a0f-de5da6a74963.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 0x8c8e415b630364a4882d31590cf8645224149d2d888712e9c51b3e19ac5e32b7. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USJ3V1096320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fead8cf7511da738a57c703c37f6f3cd13169a1d950e1ecb9a73b400a4d00b9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USJ3V1096322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c4d233d3a442dca89db5af7dccea9471c707a1fd456a8ec4089e99487a6979. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USJ3V1096325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa54321b4d6d7cfe776c6ee5a77eb05ff71a46faf3bfca16dc4320c6d04ead3. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USJ3V1096328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342656f0305e3996bb9e4caa68d43bf09bea7a0a864a9003b84f80ec7ab050ec. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USHM21797982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4b1697e1992ac0633a2ef23583a30e69be1c0e8858cf7c1a53241d13852e76. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/USHM21797987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc0cf0c1655277d222821f036b0b16a6a94fa4176c8ce38908638eb41effea9. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCAEA1813742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d1e172c8fae708f2ffa3848a655aa44193234e4dd4202818b1ae9aad5b9061. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAEA1813787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5b22dc918025be76edd36858d9dd1669d405c6425620e5c62b19e432b5b17f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTPX2197124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d551b3c0059ad384fd82a3de481a9e3b85c3a26d3ba97d91f46107be98a8ba1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTPX2197130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17cdd15e7ecb855a402cc3580bfe040443cd102573b704e81c3aaf02efd7b93. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZTPX2197136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a49e862fba93878072aa47d1173352c50435960f3c785724ca2e0d853f661f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZTPX2197394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54099d6d1ed264ae5a656e084f358005e53d68a695523a0c0ec80f4986053d28. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTPX2197401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3583652c57af00de7f1445602d3d6ca28a46db72cbc6abd5d5618393aa860948. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTPX2197402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa877b35322827ef1b53b34266ba4208459534c2938e09606da19287d6309b0f. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/QZTPX2198129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f82eeeaaafb9df3aeede4b3fd72ad08bd8acc6225db2205b1bb9897bc80d22. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/QZTPX2198131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a45a6f1da1498e6d869bf1ae9f44ae899131a45bad2e77e1f631fb840edafb2. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/QZTPX2198137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60965a2d4217099f30da6455b6815ebd8d370c265bb6ff028e4e419559bbe283. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZNJY2229778.
Son el Tlacololero/Son el Torito/Son el Chivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8499ef837b40a11a3d0da9ac19f01518aacde7038e64f776d325175d23f32ef9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZMZ92469048.
Son del Sombrero/Son de la Botella/Son del Alba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96224daa36f858f5521fbcd4da7b60f282155a4aa40b6935c559c2ab2a6a8fa. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZNJZ2409746.
María Teresa / La Vida del Pescador / La Diabla / Mi Guerita / Guaracha / Los 7 Cumbiamberos / El Cucuyo
Tributo a Aniceto Molina: Palito de Aguacate / Mal de Rabia / Sacudete
Mi Novia y Mi Pueblo / Los Caminos de la Vida
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a962890af2d96c6171d4c244d0de1e465f756c3b24eab3679389db818c8d99a. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/USJ3V1118567.