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 0x451bcd199afe1bf945bcae88151d314f017771247bdb5f0670dbea43a2435436. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c82c716c-a95d-42f4-af84-c47b2321b8c6.json and https://artists.proofprofile.net/proofs/artist/c82c716c-a95d-42f4-af84-c47b2321b8c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Escenas Poeticas, Book 1 (arr. P. Breiner for guitar and orchestra): No. 1. Berceuse
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 0xfed8b6d074873b14c5788a2380a7323dffdb6a67155317310a5bd703b9d39a7b. 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/HKI199742813.
Escenas Poeticas, Book 1 (arr. P. Breiner for guitar and orchestra): No. 2. Eva y Walter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db8da512269f64b78f0e3da10b14fadbcf1e1fbe975c8617f9ed940f493f786. 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/HKI199742814.
Escenas Poeticas, Book 1 (arr. P. Breiner for guitar and orchestra): No. 3. Danza de la rosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb189acf54f9df896a9fbcba0aa9f9a66a0c3e43a805e56dd039b5a6a3b273997. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKI199742815.
V. Andaluza [Playera] [arr. P. Breiner for guitar and orchestra]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbd5a9c6207335b7eb31c57187de79134597ba71a8c179bad530016f27219d9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKI199742805.
No. 3, Danza de la rosa (Arr. P. Breiner for guitar and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb189acf54f9df896a9fbcba0aa9f9a66a0c3e43a805e56dd039b5a6a3b273997. 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/HKI199742815.
No. 1, Berceuse (Arr. P. Breiner for guitar and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed8b6d074873b14c5788a2380a7323dffdb6a67155317310a5bd703b9d39a7b. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-21T16:31:33Z), 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/HKI199742813.