thumb|right|300px|Margot Loyola in 2013 Margot Loyola Palacios (September 15, 1918 – August 3, 2015) was a Chilean folklorist, musician, dancer, and teacher. She is considered one of the most influent
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 0xc7ea63f809710bd243795497249b87a04f8abba57f9b7f58dc27c37203c484e1. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0edd87ba-0019-4b23-9513-373a3ccef38e.json and https://artists.proofprofile.net/proofs/artist/0edd87ba-0019-4b23-9513-373a3ccef38e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ay, Por la Noche! - Cueca - Danza Nacional de Chile
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 0x4c9a67a89d5822b8cf525940657a8419d612f1422cdf777f425d2b18082cb6cb. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/GRGCM1837201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc377f8b558399823b9bbfa3e36e623068c8d30564596083f29ff828502c67468. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), 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/GRGCM1839010.
Vintage World Nº 54 - EPs Collectors "Aires Chilenos"
Vintage World Nº 55 - EPs Collectors "Aires Chilenos 2"