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 0x757506f4d550553aef23557beae8bb7d6c8c17d1f728cc583f89b69c9067b9df. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/308cf29d-4f62-4e1e-ba54-27ccb86c4496.json and https://artists.proofprofile.net/proofs/artist/308cf29d-4f62-4e1e-ba54-27ccb86c4496.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 0xdad8e3aa5deba6362ff15a3dcd444fdfc411ef9cea3159f83d0347023c0d5a4a. 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/QMFME1927854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920d3e3775bd5ac3d0bf2df343f337ba7c1e5f8b7acf3357d25860e743f00af0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMFME1927866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2ce43ba279adb1a5ce88aefb9e241d503ef884af9d8563a2670516b8b7114f. 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/QM6N21818771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f15e6cf6d9f9b040af707d9c7f80dccb1740927d702b6bc87e2ed071f03504c. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QM6N21818772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaef1246483a9089cd07510f44bc0f0a1d2c89688af03e000368c72b383e5dcb. 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/QM6N21818773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d146181c3431a72847cd104d32514903aec25b21b09e86c385650180b90d0d. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QM6N21818774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f34846ed06479a94dc11c3a7c5c8bd2e8ebbd716fe68b741a054a040f717420. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/QM6N21818775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328cabf569bcf8ab7c466934b606684211a9aa7ba377bf3e05fdbc1a2617a063. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QM6N21818776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d985b95eb9ec8bfa512e420d5540968ff9ea31f591e21e0cd5f2107864c959. 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/QM6N21818777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba9bb8584c5c4fc9a105c4554e6219556a28840adb149df3bebcf1fe93b640c. 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/QM6N21818778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca27120c653eddb2589331c997353da0eb14072b9b5a519973dc41472b791c66. 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/QM6N21818779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ef211a29007ac8b295db74a28be178cc61a0dcddff58afcd555c81381b0805. 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/QM6N21818780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef5553b17db359ab83874622bc0bd3e0c6839e858e1940a76d9b2880c97dff9. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QM6N21818781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a94c4b95cef9d67be20610829a2b795414ad8fe36b26379348a06281fa48fc. 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/QM6N21818782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab28a7369cb0ce8b74fa5b3850094c2c5bad5654d3ac572333fb0ea64eda105. 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/QM6N21818783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923b1d6002486f4c2b86e5ae7031b662546626f75522df991b86fc8b8f60c7ea. 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/QM6N21818784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c947d257b066a497b23feedc87ce6eb85325214a263e1bab1dfb9da60940a5. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QM6N21818785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02c7a0119166ee1f866ec0058434c7000850721a085921cf3404eecc51b3ea4. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QM6N21818786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b24c9aede123a32956e36f74d2bba3cd96ef4e5ca129bfc113b76ef4bb5f846. 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/QM6N21818787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5090a703b06b58655c70d5dabc975b610af234310912f4767c1bc01c43f203. 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/QM6N21818788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0056e0e2e2cda9e6f7f029f4bf4b5264519b4b32646b74fc3a3a04e9f3a0b7. 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/QM6N21818789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bb65165b7b9c470d7b94c360fe0dbba26b69f23d9d9c71f150619343a50534. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QM6N21818790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6104ca37a0c5fc3f6363f621fb2490dbc611bdfecb929719af8294b6caae5c. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QM6N21818791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c00fbd9668284549a310cd350b78d1be38f76d4017dab5781da4ec7b1211fd7. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QM6N21818792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26830efa711fd9af532b3be03a64c3b655fe5435d4f9677f416354a05d6565d. 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/QM6N21818793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fcd86cdb0b63b2b7f139984bfdc9e59f3451fdfd3bca40b5dd0b89042d39de. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QM6N21818794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0b8cfa79f36a16bdb15a8f11880b6c54532c902581e1b44f78507174a6b322. 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/QM6N21818795.
El Placer del Style - Bonus Track - Rapmirez Beats
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76efb77db3b8baabbda26a4d708f923a70193741e4d3866046e67575c34f1a1. 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/QM7282060334.
Nuestra Mente - Bonus Track - Z.S - Beats
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732d02d894163163682b7a648e218369f1acf2abf9018eed3a88348b4467f991. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QM7282060335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78842a445e0eab468a7e8ccd09e268a095e98ca97a1fde5735e2bcbe972d393f. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZNJX2203785.