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 0xf33f42058cf8944ac9eea9c4772a53f0ef6c06c7cc5a75d5072824f3132a8f5a. 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/f398c64f-d15d-4aed-81bc-2c3418dd7086.json and https://artists.proofprofile.net/proofs/artist/f398c64f-d15d-4aed-81bc-2c3418dd7086.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 0xabf910da4b7f4d776369bef019d6ee98a2d0d893dba38680b8797f23de13b80e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US7VG1692917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52986adfb5c6fe09122993ae6c931879573ca7d28146fff42e811ae2a3bcdce. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:52:44Z), 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/US7VG1692922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7e3f9941299e36bfdbfd0a8197ddf3c5ec486c68d1b8bc99e6c415256b4aaf. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US7VG1692923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0d9dc610f8981c91fc5a4c309a9917f8cb4193c61944ba8d1c6bb55b587410. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/US7VG1692924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207b1cf643cca1be7c3bec62a9edeeb5c5a3d13b69579cf65959467fb4fab0f3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US7VG1692942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6465ee4ae648621fe0d3300af0996e28f1f85858b2c256cdbf6f7ef3eccdbbc1. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/US7VG1692943.
Entre la Espada y la Pared (feat. Cristian Castro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe1220ad7f3c9da96475ed29c55cf59b6db2f5260bb64d479d1cf0c780f3428. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/MXF011500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9722272f4dd8203f760bedecab8c5af7d22381baa8b9544e76756a6d29c2a30c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/MXF011500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf4f5055e7644008c41d5d93d74b71ed7987e76fbb5de78768406ba53dacc1f. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/MXF011500215.
Espero Que Te Acuerdes de Mí (Cariñito Versión)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0a84a4ff0b6188b650098ad97cd77f3797bbe04f11e0f20337f7a5880e92c2. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:01:48Z), 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/GX3Q92170296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da033ae7bc7bfde02975552d80a9a87312079ee516db2788cf102e944339a44. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWDD2224378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801e55ef5b875d5da805f2e128a7c82ad37d4532ce852ad0695439c4ae0d528b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBLFP2210162.
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 0x17d2c483fd314cf0edf21c4f4dc4dad6753c54a5ec26f09e2cc2600d2f96f0ad. 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/GBLFP2268795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabef74273688d5f5dd798c1c89f80c371bb1f149c06862c12b3aa74898ef18af. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QZWDD2224372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8e82143f8e3a5a76c9df4c2ea14d5b8ecc19aed7ac892b413afa2519b6fa43. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/QZWDD2224373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f040db2750852b39723f149fc595d941b9f94c6d346652d926df2d091ba6947. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZWDD2224377.
En vivo desde el Teatro Metropolitan (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b9647dc0a961ed790f1fd14243eab8b763fe4a5c1f626c8267d8db57349f3d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/PYC842510161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe740a0150969dabf84c4e0ad93e8c0ca1470994ca5d5808d346a023e939c9c. 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/MXF011600385.
Su Majestad Mi Banda el Mexicano de Casimiro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc23e45a0594dd80c907a60bf7cc9e1c86bd5cc7f54eeccb86042d9c832ba71. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZ5AB1862721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75348d96d490c53cf4cbaf6760f0eab966cdee515539c70ac99cd41f8614d1c9. 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/MXUM71801863.