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 0x9bcaa21c58e50c5504417c05af940953b1a6a9bd6118ebef457f3b332f4ae052. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be52b2d3-bcaa-472a-bb7c-60ba2842d3a8.json and https://artists.proofprofile.net/proofs/artist/be52b2d3-bcaa-472a-bb7c-60ba2842d3a8.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 0x68a3da58b232ed69c14edc30901780fab610bae15bb9f6b0aee75d984be555d1. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:41:43Z), 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/DEXO52483570.
Vintage Spanish Song Nº27 - EPs Collectors
Sonido Radiole : Marife de Triana (Lo Mejor de la Copla)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6137922aa0e9c6e6f06b91521abb979507f45e41553e8aa2b2343fe3c039246. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USZZR1013700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a65a1e6c4fd6edb817440192e1a43797e94324e69acc0179af3371ffebcf05f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USZZR1013703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5441e7c4d0aec8e0e411c5b27427abf8ce36db4139ab59efc930cf47402c4fb2. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/USZZR1013704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45a2f328c92d48e4db00ed14729daec78f6997b240a199d2954ad85c2f7156a. 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/ES5027700149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b6a9f7ab425439dcf00f5a8e62fd44bda7713f017d186624af8985bd7587b8. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ES5027600216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6c38e0b84490b739e074062eda5f2733581cf578a12645268b78a0e6aa1231. 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/ES5026000026.
La Reina de la Copla y la Canción Española
Marife de Triana, 22 Exitos de Referencia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796dbaf53f4945ec58a652e1cb3bb24f60c16cf8c2a8ce9952014c31ed14cc4b. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:22:51Z), 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/USV291346313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442a150049ebcf7f25792c4b5718c41165b68b231a9637f73d90fe7a567ae4c1. 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/USV291346315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0dc522abfb024ed32f6d819a56e12076664d1945fc7c70a347c12e5bf9af6f8. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USV291346317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e68f34fa6fdf7101ca0c20081fa7e3c3e73d3e833f30e0cac04e419477796d. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USV291346318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4eabed8a5a588feaf3ec312c37f3fe5a8860b5435db6d5f8557aa2902e165ee. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USV291346324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82aaa058c914dd7103293a4c920e7986625d084f390f422f8c48461304d513d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USV291346327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ed9c78d0f086b9aa3c9e669dc3853ddd2105ef1959113a100473d89e661ccb. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ES5027500284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb59d84a7df331c772f496e018db24961b858ab8c88fa250a4f3e849d8c06eeb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ES5026900115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4104bc5594abb879b58518d95a632aa8b2e614d08e1e1ff216e30d8137e4dfb6. 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/ES5027500285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33005b143cf0da92b29929cbd7732434aefded3cd788c177545e98886106c84f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ES5026600115.
Marifé de Triana y Antonio Molina por Pasodobles
Coplas Español; Marifé de Triana, Tomás de Antequera & Conchita Piquer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd8fd88772060d5825d56cef6ad72aefa27884d11631e5866cbddf3ae299c39. 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/ES7581110260.