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 0x0e819263ca8bc10d9afb18e3c275965526131f865f5d55fa3efa46e9eb39bb55. 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/b7eb00b4-46a9-424a-96d7-aa6c2fe01393.json and https://artists.proofprofile.net/proofs/artist/b7eb00b4-46a9-424a-96d7-aa6c2fe01393.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 0xb7d155e33fba025668672a97c7b5994307e31ff6633da181966ed10acd42ce63. 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/COA6W2000633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8e270a7c04fc97d791900d3c412860bd3993a07e92ae1fc56dbffdfe252556. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/COA6W2000634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d155e33fba025668672a97c7b5994307e31ff6633da181966ed10acd42ce63. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/COA6W2000633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36dd946e0a0f917c11655539cc802b602e4eb64a2e99731d7ac86010ea191b05. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/COA6W2000635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a9c76ef57b9c148438ba7b04f487c1d2db3e09ae51254751c68583b672c866. 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/USLZJ2118337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc27b0365db5e9b1dff8a6b9ff0f2010e8a263fe3b4c3938e90b5a3f855af782. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:44:25Z), 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/USLZJ2118286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a9c76ef57b9c148438ba7b04f487c1d2db3e09ae51254751c68583b672c866. 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/USLZJ2118337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503ae8fdf5b64a967ec46573bfb739b81f8975de402738f1f6f9143e06fef93e. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZTRX2122202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea2cd673a9d95e0a2b99e196387261dce2f2a3309f2b55b348c7930fd3345d5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USLZJ2140371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503ae8fdf5b64a967ec46573bfb739b81f8975de402738f1f6f9143e06fef93e. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZTRX2122202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8ac418fb18dc2b340fb5707d265fa955e5eec536410957210ba2fc874c66f8. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/DGA052295442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8ac418fb18dc2b340fb5707d265fa955e5eec536410957210ba2fc874c66f8. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DGA052295442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b67cdbdbecc3123f8691e226475f81eff233e777397acabc4dc1a8c5e34cb8f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DGA0P2304221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79529e03a60f7ee048e3cc26881492a5f9fefd51b6bcf4999f961c31cca9573d. 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/DGA0R2346656.
Mosaico Fernandero 2: San Rafaeleando / Déjame Amarte / El Flechazo de Cupido / Dignidad / Tiempo Vencío /El Orgullo / Veredicto / La Tarjeta / Lo más Importante / Mi Mayor Fortuna / La Búsqueda / Coplas Sencillas / No soy Culpable / Señor Cantinero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb44c81864a1c1aa6e0d602ffa06c4e0d378ce3b844e1f6e2d065f6ce3b066b. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/DGA0H2445863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85421e6334fbff8160e5251e29e0fa43ce4028a7734e994267d2ddb53b5e8d6e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:01:13Z), 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/DGA0L2476404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227e28b6262106d6d83d1b911e3b34301de8a945377aeeccb7a9fa10a2aa2f76. 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/FRX762205744.