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 0xc8a76555d9e85812baaa0045275a204907efa019a02609b2aabe634d0102901e. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f39ded03-5e14-4147-b51f-2a3b82a9e815.json and https://artists.proofprofile.net/proofs/artist/f39ded03-5e14-4147-b51f-2a3b82a9e815.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
22 Años de Historia. Música de Guatemala para los Latinos, Vol. 17
Mix de Cumbias Sonora Latina # 18: Señora de las Cuatro Decadas / Mujeres / El Problema
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 0xb40959c5c0eb497927c667a08815d9237c3f2429f1af0e0fc68c9e4dc5a5c87d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GTA011901003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2893ddade890fd1ba799e8e9d2f51eb58e7b06c9f2ddca5874661e38d43882. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GTA011901006.
Mix de Cumbias Sonora Latina # 19: Muchacha Triste / Por una Lagrima
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b1e0d6ee1d0bbeddf0cff7f27043fd6a97d462442d71c85ae41f06ca5a6e12. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/GTA011901007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8081bbec3f2f50cefc3fdff1ad98ebd6c53ae34d934b0b210cd1287bea7ee4. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GTA011901009.
Mix Ranchero: De los Besos Que Te Di / No Te Contaron Mal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ffc4250265eb63e8887b0a67d8db7fd94c016e26ef663f00d3fa0674ef6398. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GTA011901010.
Convitazo # 2: Feliz Feliz / Mary la Orgullosa / Lupita / Un Ramito de Violetas / No Bailes de Caballito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32484c168c791609f6064709e614878620283ecfdd18c19812c81ac84f9d76e8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GTA011901012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9e4ed124ce5df4ce1862719dd470392802aa83c2b4814c287950176edc77a4. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GTA011901017.
Mix Merengue Clasico: El Cantinero / Salvaje / Morena Ven / Caramelo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa81545c821254941c75fe50056cbf392a7e200d8d7223008b8481e4de1e336. 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/GTA011901018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460d67e2f8f4189756cb0cf9e26a62862ea12e3c1f38bb7c852c41d02d609358. 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/GTA011901022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d11dd7b6e765a23788515ef3ce890e1b96753c04e9940634e2ecdbfe7dbce1. 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/GTA011901023.
Pa' Gozar. Vol. 6. Música de Guatemala para los Latinos
Mix de Cumbias # 4: La Pollera Colora / Caballo Viejo / San Fernando / Se Va el Caiman / La Piragua / Coqueteando / El Mariachi Loco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0afd6961503fa75d053da3580703b68c5c01182b0b8f2c6a754cf2cf41e5365. 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/GTA010704991.
Mix Rancheras: El Silbidito (El Chiflador) / Cien Corazones
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce0e152750c1f2fdf074b11086127f5591f38740c7dadcab2c31f50088b2296. 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/GTA010704992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db4deb06e8c70b2da9f2e9d7d700d2cf541c2e405bd17bcd54a5d1aa93edb81. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GTA010704993.
Mix Zarabanda Gozando Hasta Amanecer # 5: Sumpango / Puño de Tierra / El Hijo Ingrato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16d06d640e7166f08dee78fc6fa58e3a58561227455e726049f64b847ffab50. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/GTA010704995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e886352e51d23973985ed0e3cfaa34cbdc1e8eb9b385572d74f75ca28b38ef. 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/GTA010704996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bf74c0043750ba6a66748a1d2bed0e747faec8e2a96c87d75ce097086b9469. 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/GTA010704997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce93f627c213f45431cea6b98de996bfd42825e71da0f53d93342cba045d5144. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GTA010704998.
Para Mi Público Vol. 5. Música de Guatemala para los Latinos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdb6725834f7bd423ea382b454139573c4279c7d4c58919ce01f4f8426cee69. 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/GTA010704701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679812980308118cbeab06acb0492798bd2ab3447e5e7e26d12205904b9a05a4. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GTA010704702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4e5191c440430ef6cd37d627b100703649e953b29a9892e43cdc8a0aacae34. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/GTA010704703.
Mix Ranchero Gozando Hasta Amanecer: Mi Marquensita / Mi Novia Linda / Dos Palomas al Volar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0f79b3ddedbe7a6ad0fa4114507bf5c4a54d1c964b68edfc37ce8bbaefea06. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GTA010704704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c603b314cd6dd302d63b551ca24af9fac124aa26489c1c255d49f64989ce4ac. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GTA010704705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f750499e2d471396ef9e168df4b30b1d472e9e05e0050eca8357ea43b26fdf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GTA010704706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee8bea46bc907196eecc7015d1fbf898254687be55d83b2b676a4acb3c9c1c3. 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/GTA010704707.