El Contrato (lit. "The Contract") is a Canadian documentary film, directed by Min Sook Lee and released in 2003.Christopher Hutsul, "Migrant workers suffer in Ontario; Lack of support moved filmmaker
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 0x5a8570575a75889c6df2bed74ed1c08fc5859e3ed7d1ebc33e8b8a52d767887b. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4681ddc-f168-43df-af22-2d8d32817778.json and https://artists.proofprofile.net/proofs/artist/d4681ddc-f168-43df-af22-2d8d32817778.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Se Murió De Amor - Desde Santiago, N.L. (En Vivo)
Popurrí De Luis Miguel (Un Hombre Busca A Una Mujer/Suave/Cuando Calienta El Sol/Ahora Te Puedes Marchar/Isabel/La Chica Del Bikini Azul)
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 0x4a7076571d0274f89f7b814c90c85b750ab38c456551f3f0584d3cd68ce9173d. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:03:10Z), 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/MXH132300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59757d58d446aa8ae6ef64001ae7ce6623ec249cfd15a285b7bc367cad4f8a5. 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/MXH132400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706578769ff88b1d483ca4fcf6ad778e13d61da52223ad59dd08668cefe6ca6e. 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/MXH132400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e5520c8b88380a923a62f9a9413316aaf044707c93403067f52282ba76f66b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/MXH132400053.
El Inicio De Nuestra Historia Vol. 1 (En Vivo)
El Inicio De Nuestra Historia, Vol. 2 (En Vivo)
El Inicio de Nuestra Historia Vol. 3 (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc357a62b4e81c0dcfb3ee748ce96b6f98e3c06a9fc316daa4aa6380652a3a1. 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/MXH132400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7327caa6c0ae33ba74dcf86c3c156212a02899d1388daed3fd8be9b7eebcfc2a. 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/MXH132400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8eb5202289294414138c1bb042eb2857e9b64b2a2708e93d0c690078c322c4c. 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/MXH132400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a370c580581e08ce12ab1e5cd4eb9cf2f7e2a1ac65200d08783da6975c37bcc. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXH132400072.
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
Popurrí Viva Matamoros: Cumbia Francesa / El Baile Del Gallito / Isabel / Coral
Popurrí Al Ritmo De La Capital: Mentiras / Yo No Te Pido La Luna / Celos / Que Vengan Los Bomberos
Popurrí De La Selva: A Bailar La Cumbia / La Chica Alegre / Sacúdelo Que Tiene Arena / El Oso Polar/ La Zorra Salvaje / El Manicero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd60747e7b8b79cd8b73707a8faad7a240f1a7e586615290314eee6a0a306d7e. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/MXH132500051.
Y Qué Tal Si Te Escapas Del Cielo (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a742981c1fcf7939c29218073d2f24f267f39dbd67868c49c582ff76d9282d. 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/MXH132400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6802d488b26d815a23b63b697bf09cff6f238f50b45bfcf2d204226634c716. 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/MXH152400219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1dd07132d1092a6b47b7a20eafd74783839cad01195aeac05758ddd3f963a48. 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/MXH152300570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43aed7556029c66cd536c07e5ec59857edfee525bdd2d0d1edd07ae1c703b74e. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/MXH132500009.