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 0x39cd71762aecae17222aa80df02ccda877258fe24b8015ab848b6f20b090ce47. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9f131dd-4ce9-44e7-bced-938fd5dcd8d8.json and https://artists.proofprofile.net/proofs/artist/f9f131dd-4ce9-44e7-bced-938fd5dcd8d8.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 0x3b49a7349aecdb5415a0215aeb73385ea9cee99dd51bf369811dc663b92bbdb0. 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/QZNJZ2468661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727ea60d73c3ba1c575f927d90dadf2cefc0001d0971988d1c18ef49d07e2c28. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNJZ2468662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75b438ea944d3768abc08bb525edf3676ecf41e5da9f8d488a0d5e2a15ad9b6. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZNJZ2468663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4923b897ba248d6363e7715d294995785034df9248ee0f2d5c74003be0dccf9a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNJZ2468664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3bda463c46e6a7b913d33de2a386581675b39c06c9bdb4cc8409e9665ae0be9. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZNJZ2468665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f9c814737f09df28215bc2cd5c0c71c909245c47046b25ad082a033b3dc0a3. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:56:56Z), 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/QZNJZ2468666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a37a499afd9d229369aeb73d5c1b4657bab5442c8cee7ef93954014f96d9880. 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/QZNJZ2468667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e75a35447ae89d0eb5e4132bde9a76e976b64b98a482b4faeaf0bdca19bb67. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZNJZ2468668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e39f92833b6ca0d887ea47bc6fd5a85ea042f43de4cdc1fecb882413253b3c0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNJZ2468669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9811128b50105f5b8aa94f25fbe900d5f093efeb21c3afa3bc72791d9681f890. 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/QZNJZ2468670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e13b96075c11647db90c0e0f79b131d170a4737e47ca4505d5c087205fdf62c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNJZ2468671.
Un Sábado Por La Noche (En Vivo Desde San Luis Acatlan 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e264985d2752e468fbb1744bc31fd70daf40098ab5eecdbf30ed1a2ae0e6df9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZZ8A2464147.
Musica Para El Alba/El Burro Loco/El Zopilotito - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0530a84e62fd7bd4042dffa937b5fd2a56e8b47200c920386415e4b0ebfed4d. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:17:53Z), 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/QZZ8A2464150.
En Vivo Desde El Refugio (En Vivo desde el refugio gro)
El Tronco/No Fui Yo - En Vivo desde el refugio gro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d86ae52e2b0dadbf1b053c987b0aa343e784678f77607d4f62d7db972f68c65. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZ5FN2580018.
Baila Morenita/Siguela - En vivo desde el refugio gro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364e0afb7a7afada1a5c7179e59b25067ffb3bfdc928ca99dd35a13e4b7cef70. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:32:43Z), 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/QZ5FN2580028.
La del Chongo Negro/Vida Mia/Si Me Recuerdas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86f5307c11c02cd84e3c43b9f03869769005cabcf5f49f9f4599db378dc8dd8. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:04:29Z), 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/QZMZ92563376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73ef30220c3b2d5363458954d3570ff70fdb63a1710d1cdb8947de7d2e523fe. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNJY2501962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82999bccbe2b05cba629c7bc26a7de6a1e1e50e424cf872056b708390c30467. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZNJY2501969.