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 0x2a4163142d82899f244e9bbe9175e20745eee5c2429a07ec144620407ae5f465. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/658228cc-b22d-478a-8b95-6217de3fc664.json and https://artists.proofprofile.net/proofs/artist/658228cc-b22d-478a-8b95-6217de3fc664.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tempus Belli, Música en la Guerra de Reforma, México 1858-1861
Alba Patria: Música del Ocaso Novohispano y la Independencia de México
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 0xf11720123c953990f94e6864d8cb446cb40d48ae2d406d127877e232fe500d64. 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/MX2832199718.
Tehuantin, Música en Tiempos de Moctezuma y Cortés
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917ebeda91d5ba823f195b08e98464259adefc5189c3544ce8095aa39c00b97a. 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/MX2831301577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05647334436b26df35ca14fa0ffe26e0078562bff681fb1d5f9545acc229c4be. 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/MX2831301579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7173261f809606ed0e4e5a919e6307f070e961ea3297b91336d34b7d93c979. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:16:56Z), 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/MX2831301578.
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 0x3da22e098740ff47035ebcc45842f5cc50043dd04f94916fe93975dce4f8e66e. 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/MX2831301570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8527acbee7f69b287b5ed06bdf2b6580e991f0659b291724613a6e338f78fd. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/MX2831301574.
Don Porfirio: La Musica de Su Tiempo (Acordeón Clásico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b02d6935e03cb6b5bb2bc31c4b5650dc0ff1093172b5a19d35b9da9eae2ea79. 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/MX2831301939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4c6f0cd15f66b3efc9ff427b3bb220e7690bc0c945b13c0b34aedf06e2c812. 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/MX2831301940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e0fe081c9f53529500571fb7642be4cbd54efa1d82faec93882080b4653374. 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/MX2831301942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06d8639a4e879e3312b44a7a2f82a9396ae1e89126dff64a2a32881c30a8f20. 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/MX2831301960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d07de7b049751b3bba7df577aea61d2e47cbe852cc3c888409dbb6379fcc37. 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/MX2831301961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b38b0a117aa148dcea754adf310ad7c4a7a26239da6771a9bc592a9d066df01. 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/MX2831301950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151f47feb25bb786986ff2f44389dcd6d12f6f0a925a2804912d3707ecf77c39. 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/MX2831301951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761ab418f61521515af5ab5366bb37ab75a1b306a9c20ffe2c9e5d1079db8d83. 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/MX2831301953.
Variaciones Sobre el Tema del Jarabe Mexicano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe264666d557a38337fb5d90698e8fc31d7d125db5c18da6bc537877cf2fae549. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/MX2831301938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8058b15d55cfe86253df8a8b4404d2598a72ef8f5a72ef41c69ec5b398c4a993. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/MX2831301955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf63907212c86cf44948f40cb08c3c8aeb5b5d516d56a5a4f3f6dc80f6b0bd57. 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/MX2831301941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da396809e8ab111c904d77b2648f561714f4e7ea262bcb89762852bff5fc53c. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MX2831301957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ca293ae9070d9178e59670e4fde5a1e0c57e6ba74edc89e95d9a86114b42a2. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/MX2831301945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b668b89af98b5fe1fbefa8bbe07456851a403333d3a1898ccbc30658f9cad8. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/MX2831301947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524e726cf8b337a056a6c40e2575e99d29568d3800375117ebb97c4db30fac70. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/MX2831301963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a17e04c87132902fd928255336cfb4cb50cb59961b8bf95955655eb494a228. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/MX2831301949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd93e3f2bf10567c31c668b3ab4fc735750f72e08a721cfc397cd7bcdbd6e97f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MX2831301965.