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 0xd87269d19d2a52cc6af8c10d039cecf7447ce5b31068e42d42815fa8017682b2. 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/d9b7fb61-aa9b-4cde-81c5-9a7c984e9fa4.json and https://artists.proofprofile.net/proofs/artist/d9b7fb61-aa9b-4cde-81c5-9a7c984e9fa4.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 0x94433bcd7be9e40d56908343a6994e66244982694de92a3ad418c60b9f433d42. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:29:55Z), 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/ARF108600307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4109394713a8fcdeee1db3e6f1f087cdf2741e4b98f939801630383d342658. 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/ARF108700213.
Sigamos la Farra Con Los Caimanes Santiagueños
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f1d0d2cbe759693cf126214a559a7edfcf9490e54510826202dfa99c9ad33e. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/ARF108800152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61447508f72158b60333aa7a92312db8a1241aa9bd409a32699dee1f8049e081. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ARF108800153.
Para Que Baile la Zulma / Mi Negrita Divertida / El Baile del Obrerito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8eb3ec3babd8653bc376a60652d19c3977aca31395212b589028562f54443e7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ARF108800154.
Enganchate y Bailá Con Los Caimanes Santiagueños
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e597673a2b1e45a5374842723b5cb9952e55232b457bfbf9f169af929007ed5. 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/ARF108800159.
Bailen Con Alegría / Hombre Engañado / Mi Dulce Mariel / Papito, Junto a Dios / Chau Año Viejo, Hola Año Nuevo / Porque Soy un Promesante / Llegamos al Final
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d62b95cdba3634c6f5c5f3a7e1b0cac03a2b6ba96009b3f22dec7ea9b2d09b. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/ARF108800160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb15bddcaaad5aa74611d21f835842f1a438ce91a43b4265fe280a6fcf42a37. 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/ARF108800161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b54d57c94b6962c5796cf02fd975315e2024d07c9e927ca7f9ae7e23e3dd6f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/ARF108800162.
Suenan las Campanas / Quiero Bailar Alegremente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ba1ef6fc2c99aa1c39fb27a5344258976093662bbe8418749f0cd7418f607d. 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/ARF108800164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2c1c06c4051d4c3ecac313df86d754a9f426aed867940d425eaf8151ce589e. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/ARF108800165.
Bailanta Tropical / Fiesta para Guarachar / Como Lo Bailan en Comercio / El Río Dulce del Amor / Sandrita No Tiene Rival
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45140140a5dbe58343e767762cae6478ae1853fe73eb6a60e2e40ac3de76d1de. 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/ARF108900141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90b519c5786bff2633ce89e975d5e8cb2c857ec19775f18ae2e8a87cc9fab71. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/ARF108900142.
Mamá Corina / El Malvado Mentía / Celos de Tanta Belleza / Me Amas Cuando Quieres / Teresita Mía / Noche Cruel / Noche de Paz Con Mis Amigos / Mi Familia Ya Festeja
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5fdc37123efb428c87d11c32b73c83b5dfd7d948b7442d4ae9b63a52e80f70. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/ARF108900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a50393070140d96188eb5ca94742dc146a4550e39541f0d9649c51833298103. 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/ARF108900145.