thumb|right|250px|The Orquesta Filarmónica de Jalisco at its headquarters on the Teatro Degollado de Guadalajara, Jalisco, México. thumb|right|250px|Orquesta filarmonica de jalisco The Jalisco Philhar
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 0xf9dd40536cf22546e8160d71132c0443a87a34e0db5b235139de483e8f0afe7d. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7bb5bce9-01d7-4897-a5d1-7e42bd4acbe4.json and https://artists.proofprofile.net/proofs/artist/7bb5bce9-01d7-4897-a5d1-7e42bd4acbe4.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 0xd597fad957d9fb0f4323f566f188954fe67b02265626a0591d3ca3b3ec1ab702. 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/MX2831300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69a2a9dca378e3992d60ead5dfb2b2a6fedaa2ef18db0855070a4479d924b4c. 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/MX2831300165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa341b23feee754021f5e4712bf7e040701a0ed394ca6d3b387fedceea8afa195. 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/MX2831300167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a00fb0686acb031011f74d282aa98703a1f9ddac8e8093c17486a76ffd2986b. 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/MX2831300168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b77373b213e11ac66858e9f02182ad674e0abb5cac156ff7cadbd3fa8e0028d. 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/MX2831300171.
Música de Chávez, Márquez, Moncayo, Revueltas y Rolón
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94be8e78a44bbc8a60d97201ffada1a74246d0691c89e24684dc81e88df3bda. 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/MX2831300382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d5cb8382441a9a9b8e74f088e4f79ed58962e57f04e4f62616c93ad2305574. 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/MX2831300384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9290ae76966203f2fe12d33d2244d30420693c9313eef89e9a0e4195e4381d89. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/MX2831300381.
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
Música de Chávez, Márquez, Moncayo, Revueltas & Rolón
Nabucco: Va Pensiero Coro de los Esclavos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b2495fdc8b9f3a8291ef7a65e46112048c71a2a54c3b40caef567e7b283f23. 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/MX2831300386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa8561319a2b2f5405dedb3c5faf2f363ffebe72771d8be4071ce422fee4620. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/MX2831300387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dad20ca878700568c5ca0e99b38b57128167da41a2cf1e174874066d0d34fd9. 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/MX2831300388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2185705e387391ca2e7466063e47207a602a46775268b5d917ea061fccbf35b3. 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/MX2831300393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52efc3da3642ff90c9e9dfbebfab44fb2c74ba7bdfb14c6b103070314d9c859e. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MX2831300392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894fce5a6bc81766d38a4dd3e7c58624f87837ceaed8aec6f8a02be74a189468. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MX2831300389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd806cc6244b4ec3bc3123f63a1f78049b74944c27bd105de04afbcd9c45563da. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/MX2831300390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e57ab20508abb3f2684068483f23627b84faf6841b7cbeaa006a8664e229013. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MX2831300391.