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 0x6eb4b57b14b4bb374885fadc0e439c8ff564b5ea63c80fa8809cd51ae15a6e6d. 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/a015b6f8-4fda-4276-b9a4-1dd038bedc34.json and https://artists.proofprofile.net/proofs/artist/a015b6f8-4fda-4276-b9a4-1dd038bedc34.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 0x9315824cb8cce47c14f5289a536ca795c5e36cb5cf3291fe960129fed17fbdab. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/QM7281549287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617399337d559f938b624bc85ee608cc4a8c012810675a2316c8d7b2979e8711. 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/QM7281549289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2517e287cb8c8d3d1fdcde4d5522a40e7aeba3fe9cd9e2aabc2434a8ba262cda. 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/QM7281549290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd0ac07422778e0bc0cf5d09a1ddedc6e67f733d73259fe0a74adb89b6fadba. 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/QM7281549293.
Con La Banda Sinaloense "La Costeña" De Ramón López Alvarado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c81f4d94363b1c357e7682c9800366d3833c40aa0338a0a433e36592552cea. 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/MXF119906759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a3b2936d8e8e7878e167d1c0ce78a08165cfe3734556908c8934aaf9c5ad65. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/MXUM72000058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc1c38fefffd4b6b0eb3b874797345fedb10e222596cc9ffe55e78ae818607c. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:02:38Z), 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/MXUM72000098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3763b2847d639b65e51a859550580186e04728906894388603a0cfd25d9a38c1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM7281544213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55de61ffd55fa00f78b9d9e94271189427c9ef7b417931e5fdc5343183fbc510. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM7281544215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba5c25384318ed5178d4914c49766766b235ccb3022ac8f39bfaee0dca31bee. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:16:03Z), 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/QM7281544217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84238396114a5a8ede53d26a2c1663d04063bd59e84185639f346f8b4967cba0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM7281544218.
3 De Coleccion...Alberto Angel El Cuervo
Por Amor a México Presenta a Alberto Ángel "El Cuervo"
Gran Noche Mexicana 3 Voces Una Tradición (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4b42aa41ee413b5ac3f2b6bf6b7683742e6ed1da9018cae51c3c41066c00b8. 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/MXF061000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb848e2ba8b0e20f13272d663e8fcfd4ed1552a7401b8dcdc53fa46a3c21551ca. 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/QM7281589882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed822674fbae18404b1f1a5dfb3e3afb51a5863609c73d5cdac93299abe078f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM7281589883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2c14684d53fb6028380733aea4c3c3de04e7fe6d2e79014b9f93de2417563d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM7281589884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93240685635eb6304443deb4a5db918b1a71579d007c644140e1d5fda629555c. 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/QM7281589885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85be2f673623d2a74a7411463799d422ed4d041513d28db5a6861ed2df16d7cd. 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/QM7281589888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9da874cc8de72b05e3840da1cc6d6f501c494f42bc69f36f3dea6b4bfe8438. 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/QM7281589889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1abd243163d52bbf0fb9e032667176bba77902d7285d8c27db729395480e0c7. 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/QM7281589894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bdf3450d1f5ac906387a77e69bc8bb4d7e1e9ffbf5e8ce57e28bdbf9025cb2. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QM7281589890.
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 0xccb8b2a8f331c0e283eac6815a211511de9a86c0b8f6b52b8f2e2c235c4517e9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM7281589891.
Rodrigo De La Cadena / Alberto Angel "El Cuervo"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d3498f3c4a986a61e71989645757895a958a4bee1f0f2c5050212e8b7a134f. 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/QM7281589892.