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 0xb7104c5702869ec18eb488007a42f69d5a5d3acdac1d10d815bc0472bae16db9. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec530c6b-7848-4161-af58-b326d961edd8.json and https://artists.proofprofile.net/proofs/artist/ec530c6b-7848-4161-af58-b326d961edd8.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 0x0b5b200644d8afd7f0cad757925a18f49b79121885f9e149d3c518479b4df11d. 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/QMFMG1373508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abe755c479d4f50f4d94c0c0cead5f4bceb87152ff51e6a93bde35a8b9a5b76. 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/QMFMG1373509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b4dad3bb93888956dcc363b805b9dbec0dfae18a2d12b1e4c5cf9c747c7876. 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/QMFMG1373510.
Mexicanas Medley: Caballo Prieto Azabache / La Cama de Piedra / Dos Locos de Amor / Corrido de Juan Armenta / Prisionero de Tus Brazos / Si Tú También Te Vas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82895bb18a7d81397632999473819244974d678e73a442955ec937611af5ac54. 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/QMFMG1373511.
Cumbias Mix: Parrandero / Que Lo Diga Ella / Besito Pa Tí / Cachita / La Colegiala
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899a019e48436bfb7758df893122998f8ac090b09aac59c6e26f628b4daf3a55. 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/QMFMG1373512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed7f78de45a1ea971524e85e8aaa6718fce477063a1b137bb9562f1bf2aa8d0. 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/QMFMG1373513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47acad364abeaabdf38ff089e7c61d0c3389ebb08bf2b17fb557fbd4b78319d6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMFMG1373515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d01b2f0e2db3c0fa29eb726161a3465081c8a4a2857220cf24e8357ff131f0. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/QMFMG1373514.
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 0xdf4bbc857d4a70ed32d6d3c965e49121449f085b702d26e0d8c31b0c4a323258. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMFMG1373475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeab9ec766d8ea29125e17f49504591c0b52f55532c13154fd72158d2cc5b236. 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/QMFMG1373477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a265e22102b16193ca3cc8a58cce140b283bb21683847c0566ffc8c8a0ccd4. 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/QMFMG1373478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef6e66353c548d7d131659aa155e87164dd45d806f1541924d060d8ef65ddc7. 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/QMFMG1373482.
Urbano Mix: Una Vaina Loca / Antes de Que Te Vaya Dame un Beso / Addicted To You / Amarte Bien / Bailando por Ahí
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79a90e1238570821f5a17773c374f554f995f728941a3574c0cbeb8c7de796d. 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/QMFMG1373483.
Temperamento Mix: Temperamento Sentimental / Nostalgia Campensina / Macondo / La Sabrosita / El Negro José
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebb7516c5564037f5948da4eae18dd0df0fac0c5919386227d1233e4b077a85. 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/QMFMG1373474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91710786f68c69942e4939dd9bd2fbf6c0f4936097d9e8b7689d22afb52c5cd0. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/QMFMG1373476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd0627d1bde04b5f7532743c14cd3e15574ba4013e41366545381ab81d223a1. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QMFMG1373479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa87714ded397a7437d9b1e4c6e7b5a8b5951b5a8d98bbef677ff9342ef2ab3. 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/QMFMG1373480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd557d310bd6b02fa8e8ac0abb21ba795b65f584d1338c6d83f3df6fc9a33565e. 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/QMFMG1373481.