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 0x48a45230893b658d8bd5f48cda10822dab257df37b902e878432e76074858e58. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3c2bb42-ed8e-4f2b-9e81-a9b6c11f680b.json and https://artists.proofprofile.net/proofs/artist/e3c2bb42-ed8e-4f2b-9e81-a9b6c11f680b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Various Composers: Música de Moros y Cristianos Per Alcoi! (Vol 24)
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 0x422719d48f39e0807a05e20d4a64a08b38c5a02756a6a4ca2d99ff55321ef399. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ESAAI0232207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb961595f3da5126b4eeffcb7ac835638cf45f4d5006e3eb2267163f79e98c8. 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/ESAAI0232215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d371de072e4f2e1c476d23855792e34de6ff9ed2ee407140d0129604f89f2ac. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ESAAI0232221.
Música de Moros y Cristianos - Per Sant Jordi! (Vol. 27)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4562de5462037498074e813b510ad0e9ac60b9fd9e0e7f478093ba1a7797c76. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ESAAI0232273.
Sons D'aniversari - Història (1842 - 2017) [Vol. 1]
Sons D'aniversari - Festa (1842 - 2017) [Vol. 2]
Sons D'aniversari - Aniversari (1842 - 2017) [Vol. 3]