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 0xe65dae5d4760b7ed09d78c876d10e0ca0ee5ed0da6b9df5d0c1ebef0deb408a8. 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/b87987af-8e98-4e3f-a1af-2d30080305d6.json and https://artists.proofprofile.net/proofs/artist/b87987af-8e98-4e3f-a1af-2d30080305d6.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 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 0x8ab0d1fea7aad6e298d8b94ef945799034d3abfb9545c0d2ffaf7c6a9dbfa185. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/QZQMB2100814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d486c8a4162c65e3d958e99fae350b4f9b98876bfce8c34decfce9e46f5fac. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZQMB2100815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ef54fb70b0dc75253f82516ed447fbe4f7aa8b965e2053f2848397aa6cfcc3. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZQMB2100816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56af48fb40f6392ac17ee93d744171fb30e74452e7139a2606cbf6de2e6b5592. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZQMB2100817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324872b7b35a26ceb9b561556c3a1e5f80a965f6499e64462231c00f24b18a2c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZQMB2100819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9870077b416e2a548cb5297966d8e6c49c81190c18bb6b83da64b611a65b23e5. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZQMB2100820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba27f07668bb868debde7edcce9650c7e7d250298a7db150ac767fb60125c67. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZQMB2100822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d074f27da0c533116d3b8a5b9e26cd72caae4679dfb3dd50c25d08694d75ae0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZQMB2103400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bdbdc7986997b0aff3a0da941ee6f57a946070cb189181dd34a8c725c0bb73. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZQMB2103813.
Con Tambora Homenaje a Antonio Aguilar Joan Sebastian y Banda La Costeña Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f441d083f451bcc255c1a5123e0fe244733084ec00c3edee09953bb5cb039e. 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/QZQMB2100829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aef6969b6cf7382ef3c4833dbb4bb9bbebf2c48ebb5bb71834407bfe5eaa5a4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZQMB2100825.
Caballo De Patas Blancas / Un Rinconcito En El Cielo - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde5a77b72e2314b8f10a9ff199b827217d66bfb22e31a994d2981c14fcc08fd. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZQMB2100826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519ce2c3b0637fd036e4ee07183ea6d0dd8374e585cdc63810b93fbca4df97fc. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/QZQMB2100827.
Cuando Dos Almas Se Quieren / Prenda del Alma - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2ae71a923929643bdd476d58c4aec8c18f308a9efd365ad2a4975a56abd94b. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZQMB2100830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92500d4ecf34738c71571ffd000887a7f9b528be980699490c38a899cbcc681. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZQMB2100828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc21cc806aea3861739b6f18756dc74b12b053f09f452762a0a3a1daac3cdf7e. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QM4TW2587514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e06437879c146569c15af980b0fa96a329eee8260e1f1de8ebea948b6b6c97. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZQMB2100824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55aaff2a292ee343645dd4039a1b56187f3835c0c053486b5fb4db0bded6cf7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2587381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab9f802e2f00462c4e8a7d15283846d5a86a5cb410aaa4d3291ddc2e6ff4f67. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2587384.
No Llega El Olvido / La Media Vuelta - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b816f1d697eb115e4214c63d46d0df9bdfaac0acf802938fbd58e47f1129b7d. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QM4TW2587385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961a4f4e2e7a273b4efe05845f4231825d092d65bc3aca8c6909ebb305615456. 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/MXUM71501789.