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 0x22b2f3561f01cd8d6e787d0acacf73571ee6ee9d13a8bb0b7a0947eba3c33471. 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/ddaa93d5-c0ac-4f11-9d17-3123ad1e49b3.json and https://artists.proofprofile.net/proofs/artist/ddaa93d5-c0ac-4f11-9d17-3123ad1e49b3.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 0x819b61e75e53229c01d75ebfd73f2df6d9af1d72a7664787196ce258496c5bda. 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/GTA012400662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf518f5e09c841ebfd245497d81a737f4937bcd1bfeb814a668dedcc41f81851. 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/GTA012400664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa72335dd2b448ec8a591d14eb925b76c83567f69eac40bf8633d067889544f. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/GTA012400671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe097fd9265bea08f12daf07d20214ba473bb4cd12cddf5067ae914027f02504a. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/GTA012302027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446639cd47075c5540ebe32041e64da21cb932c09d05fe01a8aca51edbc8ddea. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/GTA012302100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc1919fca04fc08b383d24c3304887696ab255a65a7a9069bb3253c1596d5f8. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/GTA012302119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04e3da3529b759c7eaf21275d43c92ee4797af8f3fbc274ef7d4946736bf62b. 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/GTA012302120.
Mix Dos: Me Bebí Tu Recuerdo / Albur de Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1548569bd36577f8f15e1e272654a19c305372d14260ff880bdbf989b4bc74cd. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GTA012302127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750dda31f2be994b26bf5c69412a6d2623161b49226308c7524aa900f629a52a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GTA012302129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8078caccccda1bbb5fe472495084eb6f5d138e742c3a9877ba3e5efef19f5897. 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/GTA012302164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387b136c77acf47ecdd7ae64b1b550cc091ead2eec4347ce85612a6f213d2f2d. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/GTA012301995.
Pa'l Norte. Música de Guatemala para los Latinos
Mix de Cumbias # 1: La Sirenita / Carita de Angel / Amor Sincero /Como Sera la Mujer / Poquito a Poco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22530bfbc9d8fc71e933d0ed25d9fbb0c3c388960f44bbc7b471d9d87e54b252. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/GTA010900040.
Andale! Música de Guatemala para los Latinos
Mix de Cumbias # 2: La Basurita / Cuatro Cartas / Los Morenos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc77973de143e383324ef3aa06661fb30b973908d8ae045876db9d0b30170e3. 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/GTA010900065.
Mix de Corridos # 3: Nadie Es Eterno / Un Puño de Tierra / Cruz de Palo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dd0ebb8b9dbd3da0710e25d29c3d189b437a849d184f0ad7400fb1139f0687. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GTA010900069.
Mix de Cumbias # 3: Yo Te Quiero de Verdad / Engaño
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bfc8fa73e24d9aba3ef2d3fa7ef2e6c497e5d3285d508c82195b413ed4e5d8. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/GTA010900073.
Para los Rancheros. Música de Guatemala para los Latinos
Mix de Cumbias # 4: Donde Estas / Las Cerezas (Cherry Pink And Apple Bossom White) / Si Vieras Cuanto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af2eb3c0b404f6b91ae9949c0c2aa767b0c7b221a8be93c1d709dcee0fbc39a. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GTA010900089.
Mix de Corridos # 4: El Caballo de Sotero / Agustin Jaime / Caballo Ensillado (Mi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e4c7281c24705e01608523df3ac604b150eb252b8e0ade99cc7e51e96b9bf9. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GTA010900092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185f8de784196387c9c9e60911a544f08bd24696180ba9f4c0ad9431b6deb745. 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/GTA010900093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab712139df7d62547282e0d1d88a98f191c90b5d6f40005676f117c53a8cf7ee. 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/GTA010900094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ae8e412eec1afefee3cd31b26079df09ce94af139856b1cfb3b4aeea709958. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GTA010900095.
Estilo Duranguense. Música de Guatemala para los Latinos
Mix Duranguense # 2: El Hijo Desobediente / Una Aventura / Una Pagina Mas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060c0a54cd87909899b5cc4c6fb87e49fb0362c8625ef9a6ba444e9f1f161903. 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/GTA010900278.
Mix Duranguense # 3: Si Supieras / Abrazame y Perdoname / Que Chulada de Mujer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b02901aa92547d4d2fc3fded33c08fa448225f94fef47de874aef4f5e2a796. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/GTA010900279.
Mix Duranguense # 6: El Sol No Regresa / Antes de Que Te Vayas / a Cambio de Que
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d64fd5fd38553f44d3f15171cfc55a4b603dea44c529039e64cc2aeee255e5. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GTA010900282.
En Vivo Vol. 1. Música de Guatemala para los Latino (En Vivo)
Mix de Norteñas: La Muerte del Tornado / Ojitos Soñadores / Una Vida de Tantas / La Novia del Pajarillo / Dos Palomas al Volar - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae88bbe573a7d92095f40b32b46466ee167c8547f07149357329a3f33c6a65f. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/GTA011500728.
Mix Duranguense 1: Derrumbes / Y Nuca Comprendí / Cada Día Más / Que Chulada de Mujer - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c46a43d9f06df4f4469e46a82f95e69d2c8d29553ee124fd894ab9b168729c. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/GTA011500733.
Mix de Cumbias: El de los Ojos Negros / La del Moño Colorado / Bonita y Mala / Mi Castigo - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe17b1f2ff2ee5fee016a5a3f89eb803da939a4414b3a8487195de8a620e00bb. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GTA011500737.