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 0xfbbaa601d41841aadc1f6ee9b55d1385d8bac0a6bbfdebbeadaa973e6db9bbcd. 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/a985242c-d6e8-4a40-8427-871736b459d8.json and https://artists.proofprofile.net/proofs/artist/a985242c-d6e8-4a40-8427-871736b459d8.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 0x916dde307645338ee4c519bce73fcf867242475c2824703f77c64d11536dcc58. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/ES5161101659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c6b9caaab86a9ecf145339a1306804566efc58f45cd95c5dab5b611d470b0e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES5162006343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb20ac53add0c46ae6233461bc9384b6e02425a94c29de2e0ff896add2fc1ba. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ES5161101658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06de724efa5e3869b0699b8539b2c49e3ec3ced1ef6b86d9120525e9c41ee3d6. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ES5160801057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64034bfe0b42ef2c8dfc7022bc8f7882c42563b1900f28c617451fa187d910fd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES5160801021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ccd167955eacdfa7b178afb02c4df7580cffdc731eb5061068c75d799bc717. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES5160801060.
¡Torero! El alma de la fiesta - Pasodobles taurinos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6109daaf1e4487a88cb6dd29ff9c1dee767ebe2fbc4d3bbfee499be40b25e63. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ES5160801032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc5b096c52ac30017daa2252d996cc94517673b4107e75890fab97ccc8f78df. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/ES5161302499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf8add4c1255359421602623abec6c8995d368a7fc310bb3730f75c790cd825. 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/ES5161101650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee57118ca7920b7fc0dc85218bea6ad26bc8572daad092808dac8b85a450e75. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES5161101654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829ea8a521c2873373ecc5d9ae86c2b242aeda7ca441f4fcb2a5ff88633f2701. 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/ES5160801025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5d08be783597cda0f76fab49a0c563fb655f669c697524e1fcfb01c0fceddf. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ES5160400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15ccf02b2af0567437e73086d8a96503139f5a820752d1ac9e14c8e71190d39. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/ES5161301937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7168ae0c744aeb03e188c04e341a97617d16634d91e0505c0be5be0a9e05273. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES5161101656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5cd8fedce6b5b973705da245c1d67605bde83b16e3240356eb969702bb588f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES5160801000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d445e829c49a156b137b9a093e0338ede892cc4f57d973376f5f6511d9c4fbd. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/ES5160801006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2e6b3143aee35fc724ccf6b8d40c76434eba19032cc30b9095cc2a61fa2cb1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ES5160801062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df420df8f0ad038fc9801f66d1d9ebeeea0130f5109e69aba5c13e346901a5f. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/ES5160801064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9e312ec78f7d9e48b7eacb468d9fa098d6d13aa7e52329af334ec5c43626be. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/ES5160400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fb790ba62da3e7a0b15756c3396e187ce0bfbc00a145c080cc55411d55b0db. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES5160801051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fafe7f058e4d5e9e4bafabcc9c1ab2e6c98cca88c4ae16719da6a7b9e4d73bd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES5161303710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447ae5cf3791008532adbc3d7435cb7b6cd6fb35e4022e4b885ec4fed2ab94ad. 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/ES5161303628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b84c424431fea77bf2d57e02f92ffa059f375697af2613eaa69b3762943b789. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/ES5161303630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b8abbb1e2c3b724045a21c22c9dc5f4104349d4941d4ad2ba56edaf41b5d29. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/ES5161101666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9d0f3ce367725d51b23cc5e602718af4d5c0010d47614dbd89725c99bf514d. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/ES5160801036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aec76a782989506c1791fe89d532af5fcd69cfd3abedea73c77a161518c71b2. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/ES5160400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea71636aab0ad40872dfe7a43e6c34cbedf6a97c20c34e6476ca1e43b786b16a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES5160400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6a355b7f76dc93a48fb45f57582ee09e2718a5d73f0480880d2e91cb52777f. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/ES5160400086.
Seleccion Antologica de Marchas Procesionales 1
¡Bravo Tejera! Antología de Pasodobles Taurinos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb1d827f9cac3b500315d6793cb669e423a9a1c1ee19e61cd9adc5cbb42ad46. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/ES5160801023.
¡bravo Tejera! Antología De Pasodobles Taurinos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1785259e8f4dd192b09bf113525fda6ef142e7bdaf5a96d71d836bfca218419d. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/ES5161101657.