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 0x6a4e194434179cb9e5874b0373ed7b3296b4a1e2421c19ff5c82ff7e396f0fee. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e94c18e1-c477-4287-bc93-d5b35ca18109.json and https://artists.proofprofile.net/proofs/artist/e94c18e1-c477-4287-bc93-d5b35ca18109.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 0xbe3b54fe6ff7c7b8160563597901d2c0956c0da938882e899eb815f4ff8b189c. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QM7281821569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67f9cb2468874425394d38cf627f7666e218f55d8769e944cc7665645223bf5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM7281821572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d22753799be0ff37cc8e9dfa2fe42b5b746290eeedeed33b71590229e7a921e. 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/QM7281821576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7bc2b6a738488c10879e930a0a40cfddcb09fcd6addbfe5f49afd28002fba7. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/QM7281821568.
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
MIX - Sabrositos - Bailaditos: La Gorra No Se Me Cae - la Hierba Se Movía
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7655b2d4300a48536c9f2f5ab9b040c52a7604d703a524fa09f04725d40cf1. 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/QM7281821570.
MIX - Sabrositos - del Recuerdo: Tápame Tápame - Te Traigo Estas Flores
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c206ef06a5b1702d0c259e55c1b631efd3756f27be07771ab49bbd6bcfa7408. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QM7281821573.
MIX - Gosadera: Conozco a una Negra - el Bombón
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8da70167cc3f243b83e403f7f3e3ab7f98b312c0e927ed7cb334b5ac5c0b012. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QM7281821575.
MIX Sabrosito Inolvidable: Dos Mujeres (Caigale el Guante) - la Vaca Blanca - Oye Morena
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c562114a7d7d5d5a8c80d40d00cfbc43578ce36212bbb78cd2bc8f558704287. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QM7281821577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08df32bac5801b8a1c170c388b0baa8819a235b894e7926b663a7666e0f0585d. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QM7281821578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ecd9059e2f4df59224dd6b48bc381ecf9353429910407bffe9d36202805ca6. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QM7281821579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32487e00426b06fc97ae01cf97c06db02a88cae5c87521cec62b9e0a9c836f14. 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/QM4TX1747582.
Mix Sabrosón: El Beso de Carlota / La Reina del Espacio / No Me Amenaces
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4ba4581510aee1d833e6a2ef9d1b9e2936e417b42864eed24846eb2773dc67. 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/QM4TX1747583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689733ec4827f412d8d9a31ed798812737e152d64d2f4824174c3f718ef6a301. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM4TX1747584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05ae1c2b77aa845a03b4790d3c4c3e9a08d99e428b6a6b4abaf18e6978f5388. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM4TX1747586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845bdfe8cca0591a58e4f51d776032a3e54a321443ac0343928d07ecc0ffca12. 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/QM4TX1747587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574348b206cac9501c26b565cc4fdf4a92febdb20263218342bc031849d334f7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM4TX1747590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb0bd1c94cfb1ccc9b97794adc88038945a4e386d67f0f4677ea6ea618419ae. 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/QM4TX1747591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f0aedc3be60fb84e0369eb4fa35e2b0efea5c541c511140ba399027cbcf36d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM4TX1747592.
Mix Cebolla: Ahora / Por Unas Monedas / Niña Que Tienen Tus Ojos / Le Hace Falta un Beso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94a70bc1b6a7f94f9a3dd7353f0ffb2c61bf789b2dec22096dc4cd1bea4dae7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TX1747594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacaede54d135c3de15516df77fcc28a35209742c82a475726a0f844ec128cbf. 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/QM4TX1747595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dcf1ce6d8825d282c9733db0db3d8b4ca60c739a911c56af448cd7c1bf5dea0. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QM4TX1747585.
Mix Colombiano: Justiniana / El Lechero / El Viejo del Sombreron / El Mariposon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80e3a7db739558e6baf3fa105ff2547a68143475a8ed2257b794fe084fcb0aa. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QM4TX1747588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad9d71f81c3dea099a2230fd5c7afe52efc5d7a85145bf9c16d3d24773b6e34. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QM4TX1747589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf18025a2e151eb5d62515db0c854b42ec76aef5b5d7b5fb4a67466a300b859c. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QM4TX1747593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b25546f02ea717f5be184dc75ebf95fbeeda086d9e0cbc1cf3d8a5679ad2526. 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/QM6P42421875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1c19f83b76c91c067377c7e5ee74a555f7038c27dfe39e829a6ede94de7f73. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM4TW2445562.
MIX Toñito Ríos: Mujerzuela/Me Voy a Emborrachar/Cuatro Letras
Mix Toñito Ríos: Mujerzuela/Cuatro Letras/Supe Quererte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d53e42fff7bc4ed46b6c619460063511ff52c84ee849206073ead604b1f20b0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6N22230450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4138a9b3e41c37eab68021f97d449b3d2ecd2a182b13dc3f5d4b7aad8a9924e0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TW2249462.
Mix Recuerdos - No Tengo Dinero / Por Que Me Haces Llorar / Simplemente Amigos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c41b2103dcda6f0fdd54a6ff9471a15aa7db0d0f48bb83f102c80efc86f29f0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6N22089999.