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 0xb6db1363012949b96006f5f2604a0fddc5315fc4123173ae169fbfe2fdc8aa05. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3dd52e8-a4d6-41ba-9eda-be1b984b3f60.json and https://artists.proofprofile.net/proofs/artist/b3dd52e8-a4d6-41ba-9eda-be1b984b3f60.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 0xd39c64f0ba50dd087545eb541fd6799871fce0464eb967bd035a8891256876b7. 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/ARG100710861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a83788ff235e7d815302297c6cdc727b2bbb6daf5e59e59547f0cfbcfc6651b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/USA561055584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88e7156b84fe6317e6748995bb0afe2c9cd75f433d05509869ab362e9e06c49. 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/USA561055587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29f8a059ee508f27099ffd0f4743c70f2215e75a0954c3470a7641e9f08ae9d. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:10:21Z), 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/USA561055589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7112f121a40e5285c2a52febf58b7dcb44bf7eee1cecb1cc6051a9960e1233. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:26:16Z), 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/USA561055596.
Instrumental - Grandes éxitos de Ricky Martin interpretados por Antonio Cortazzi
Prenatal 2: Música para Estimular a Tu Bebé Durante el Embarazo
Prenatal, Vol. 1 / Música para Estimular a Tu Bebé Durante el Embarazo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbead94b8fb1c947b9cd8f831aee79562f5a300d424897c233943de20529e1c42. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USL4R1814328.
Greatest Hits: Instrumental Tribute to Frank Sinatra
Greatest Hits Instrumental Karaoke Platinum Professional Series: Frank Sinatra
Música Cristiana Instrumental, Vol. 1: Karaoke Platinum Professional Series
Música Cristiana Latino Tropical Karaoke: Platinum Professional Series
Minueto in G Major, Del Pequeño Libro de Anna Magdalena, BWV Anh. 116: I. Allegro
Obras Maestras de la Música Clásica, Vol. 3 / Johann Sebastian Bach
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3518d3f58fc1aea05e58187038857871529aab14ba071d70d952e81eaabb1a. 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/ARG101104676.