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 0x32b7f851a0419552f485495547ed95053dad3708deac620fe4d801d90a64c277. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45af5dc7-2eca-4a43-9e3c-349cad12bda8.json and https://artists.proofprofile.net/proofs/artist/45af5dc7-2eca-4a43-9e3c-349cad12bda8.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
LOS QUERUBINES DE LOS ANGELES DE THEN BC
Los Tablones Primera Pausa en el Sendero
La Cotorra La Subida del Arrepentimiento
La Compartición El Descanso del Guerrillero
LOS FRITOS CON SALAMI VALLE DE TETERO BC
El Atajo de Agüita Fría BC - INSTRUMENTAL
Los Querubines de los Ángeles de Then BC - INSTRUMENTAL
Noche Fría en Compartición - INSTRUMENTAL
Valle Nuevo, la Suiza del Caribe BC (INSTRUMENTAL)
VALLE DE TETERO DESCANSO BC (INSTRUMENTAL)
ULTIMO DIA, PICO Y VALLE BC (INSTRUMENTAL)
Los Tablones Primera Pausa en el Sendero BC (INSTRUMENTAL)
Las Pirámides de Constanza BC - INSTRUMENTAL
La Cotorra La Subida del Arrepentimiento BC (INSTRUMENTAL)
La Compartición_ El Descanso del Guerrillero BC - INSTRUMENTAL
La Segunda Vez al Techo del Caribe BC (INSTRUMENTAL)
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 0x91d47193fe27a934ecd30870e1062d7d4a7b62ce311760a76d25a835b6974ab3. Chain 2 (Bitcoin): anchored in block 957791 (2026-07-13T02:46:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFQ2565771 — a six-check JSON result.
De La Compartición al Valle de Lilís BC - INSTRUMENTAL
Ciénaga de Manabao El Primer Paso BC - INSTRUMENTAL
CELEBRANDO LA CONQUISTA DEL PICO BC (INSTRUMENTAL)
El Canto de las Jorobadas bc (INSTRUMENTAL)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8278f8b54a6622dd862b402655a3d7ef2e07f1dadd23e66d63c129f9045901e1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFQ2565775 — a six-check JSON result.
La Conquista del Techo Caribeño BC - INSTRUMENTAL
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50653dd14ccb8c342780c788649791f95df9dc1f3cc8e72abb312f519a81789. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFQ2565770 — a six-check JSON result.
La Gran Llegada Jorobadas en RD BC (INSTRUMENTAL)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde35286828b14a5a92b368ec1cc70edf305ad4993323c46d317bbb1f7095b5f. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFQ2565772 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb1afd8d51311a33003f275ebe0c19c9b403f8a4d5965ba52d6e28b1634ded2. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFH2592603 — a six-check JSON result.
La Última Parada Salto de Aguas Blancas bc - INSTRUMENTAL
LLEGO EL CORONEL AL VALLE BC (INSTRUMENTAL)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7a616d3addaebc41421a87438e8279da9d2a7566d0f3c15f54531dde955295. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ792504108 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef48dcccc700873ce6b46c547c67aa2bd9cf852f81ce85df0c548ac301e0ef3. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7U2501327 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc9722d59756dae219963f560a84075972865fe2b0b91db1df0abdbff5e3e9a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7T2595844 — a six-check JSON result.
Velocidad Extrema a Cayo Arena BC INSTRUMENTAL
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8fb5cb7092ada832adf472bf89a464404861d7b5fa13698b0d90553d8fd5cd. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3F62525232 — a six-check JSON result.
El Grito del Arco Divino BC INSTRUMENTAL
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9513a77b66cc2688a94af8d117c87957696b3d993e31141ee00441a659ab5675. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3F62523268 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d7528d591a439700e54965ec7fd60b99f2205db70180f48464c095d512fed8. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3F92524521 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712bb0bf3e81eb392641bceaaff1b653724c138ee931a95ab3e86993c1d17ecd. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3F92524633 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5d068df044d877be9639ddde853e63773ab0cb8c991627564ce12da9112b1d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3F92522481 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6f02ee2b09f7b4c06fb6dc8f3172931fa0ee9ebf4e29491330154f19b3b457. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3F92524557 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7c4512ea634363b795f42c9fb4ff315a8570d42cd448992fce7800154f5035. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT6E72592564 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe26e6143cc0f4edbb9a149d82006cece8865312b307e7080a6d6db428dd8229. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT6E72598425 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4051c28f5aeef9f6a3011e59312114dec34af80a1df85e1850171b9eba65f460. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT6E72592570 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc88da3150e80822e79c9084a6517a9a8637886078db5c9c07d3284ec9e2bbc. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT6E72596060 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5635bebb77908a2d74d1b3f7208df5cf0bb7247b96cedffd25a5c4b57eae372. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT6E72590293 — a six-check JSON result.
El Drama de los Bultos en el Campamento BC
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c279f7c2399d9bafe48ea10ee49dcabdb8004a521a6b77135d9d80ac27262f. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT6E92517700 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449221415943f9c8d78dfc8734dce3c86194083c51673a929c08a03add3ae4f8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT6E92517649 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a17b6c3004b863d1793f2d29495992a303820d4d412d422706997bb2546bc86. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT6E92515829 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30642169a1cdb449a36651ab954fb146af86df3e12628a5fa70765677ff97a8b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT6E92517685 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895787804eb53634ab5a80bef5f81eddfb4e381a7dd1752b28847fe9f3b34881. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT6E92520143 — a six-check JSON result.