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 0x99b728fca12a59728a60949d592a96e3637bd26c72df3c2087e8a70f92a48fe6. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/950a5ea7-c6e1-439d-828f-39e35c85ea3c.json and https://artists.proofprofile.net/proofs/artist/950a5ea7-c6e1-439d-828f-39e35c85ea3c.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 0xc468c5d19558202fdf13be1847f8eb21c0c04308879d57d4c9f24216881bca7b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/US9CY0900420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58be72841d77443f4fb46a51dfd7d7633103ec33eb4c4d6972c3a1569062593a. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/US9CY0900422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01fb359deb57f9194426a309610e215a1749a233a61d08487c227c24729585f. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/US9CY0900430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef50c337a2f055cbd5a168ebd5d2fe7bec683e2f78e544e32d416cce1e9de720. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/US9CY0900530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68eb951375bc1dd61fcc6785462274fd4ba857d7d7c0f4bcfbf78eca525dfec. 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/US9CY0900532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef50c337a2f055cbd5a168ebd5d2fe7bec683e2f78e544e32d416cce1e9de720. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/US9CY0900530.
Banda Imperio los Exitos Grandes: Chuy y Mauricio, El Muletas, Julio Beltran, Flor Hermosa, El Corrido del R
A Través del Vaso / No Llega El Olvido / Mi Enemigo El Amor (En Vivo)
La Eche En Un Carrito / La Diferencia (Cover En Vivo)
La Escuela No Me Gusto / Miami Vibe (Cover En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f18183e01745b1d0d00047d2a5bd84045934046f1439ca1a2b74fcbcd818bb3. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/US9CY2202294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a7b581f591f14f2fc996480342373db4bc57f5f613b982ddee734d204bd9b6. 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/US9CY2202327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57c4259d2f25bbf0392e53794d7f5c1be24601ea474eec0248f7e03da4b8c70. 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/QMGR32081497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb464fb6fe1845396ed12c5d615d365c68a6cbb647217239f344dd8468f9a5467. 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/QZDQH1805667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b30339468be971d5adcf96c2f8f14896735966320168a236c7d39fef906061. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZDQH1805668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2940f7f2291df1a1ec0a0660eb591564a3a65258abce981ee692451dc59c4420. 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/QZDQH1805669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb464fb6fe1845396ed12c5d615d365c68a6cbb647217239f344dd8468f9a5467. 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/QZDQH1805667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b30339468be971d5adcf96c2f8f14896735966320168a236c7d39fef906061. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZDQH1805668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2940f7f2291df1a1ec0a0660eb591564a3a65258abce981ee692451dc59c4420. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZDQH1805669.