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 0xe98239c9cbc24fb1011e94a7a520654b1a0406ddcb591d01f502f32ef74426cd. 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/905e84ba-79e6-4da3-b08f-20c99cfa6671.json and https://artists.proofprofile.net/proofs/artist/905e84ba-79e6-4da3-b08f-20c99cfa6671.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cumbia sampuesana - En Vivo Desde El Auditorio Nacional
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 0x81fb436fe9402fbfbc3cd437eb6a5a8575c1c93d7c8602fe8d73523192bbc80f. 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/MX1491100020.
Cumbia arenosa - En Vivo Desde El Auditorio Nacional
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e430634375f8bf8dadd9371f9055ed488a3941174321a2949aa7140c5d983a6. 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/MX1491100021.
Cumbia campanera - En Vivo Desde El Auditorio Nacional
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b9a5d018a0c3065bcb7365c99d54877a53f9efbebd4ee11c39fb4cf091f411. 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/MX1491100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7613ca9c930be2add6fd7897278337787d41dd9d3da44b0bd3cdc5774d5171. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MX5332100100.
Como el viento - En Vivo Desde El Auditorio Nacional
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce570d7c77d7c9c53cba9f458ae0bfb3b3614e8a0dffc3c48da75bbb694dae1. 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/MX1491100025.
Macondo - En Vivo Desde El Auditorio Nacional
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b083397d90eac6c3fd0fc7fcd892939b1e858f45c62500078e18c231251660d. 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/MX1491100027.
Cumbia de la paz - En Vivo Desde El Auditorio Nacional
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7c2efbb48434d19b5b98c29b52b6d540f2f15189a9a5749d68a32d6329c5da. 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/MX1491100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533a71d7de79e634c60fb67deddf89ad2111a33a056c80818e50d083309953ca. 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/MX5332100101.
Aunque no sea conmigo - En Vivo Desde El Auditorio Nacional
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a46ee36b18445be5834bd697f68ec4769ae9a63eb2a192810d125a8c55a92b6. 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/MX1491100029.
cumbia sobre el rio (suena) - En Vivo Desde El Auditorio Nacional
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a5aa82905fa4d15707f42e8d824767230b04373c116c08c25c18ebcfd27b3d. 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/MX1491100031.
Los caminos de la vida - En Vivo Desde El Auditorio Nacional
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8020bafcfbbcb026a0226bf9b84bed439adcf82f244be173c795bb277ee0f87. 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/MX1491100039.
Cumbia poder - En Vivo Desde El Auditorio Nacional
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4754f69849b650c13308d241457e100934b372cbd6e4a983776df744c25880e. 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/MX1491100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a14d2587fc27635f61c906dd95417f3a61378686fc2362b744060344e3dc7b. 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/QZHZ32134460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a14d2587fc27635f61c906dd95417f3a61378686fc2362b744060344e3dc7b. 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/QZHZ32134460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3d7ed4a8b23a00787f8f3a9e575325add56a905d2e797e3752ac3ba17e7d16. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6P42344804.
Zona Preferente - En Vivo desde el Auditorio Nacional (Standard Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fb436fe9402fbfbc3cd437eb6a5a8575c1c93d7c8602fe8d73523192bbc80f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MX1491100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e430634375f8bf8dadd9371f9055ed488a3941174321a2949aa7140c5d983a6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MX1491100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b9a5d018a0c3065bcb7365c99d54877a53f9efbebd4ee11c39fb4cf091f411. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MX1491100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce570d7c77d7c9c53cba9f458ae0bfb3b3614e8a0dffc3c48da75bbb694dae1. 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/MX1491100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b083397d90eac6c3fd0fc7fcd892939b1e858f45c62500078e18c231251660d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MX1491100027.