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 0x38b7a37c3b315be264c92219df2b995a20c1d320ffcb6b39e02872cae30af64f. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e22b09b-ccc5-48bb-bc3a-61cb1d98e026.json and https://artists.proofprofile.net/proofs/artist/5e22b09b-ccc5-48bb-bc3a-61cb1d98e026.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Somebody - Reggaeton Remix (Spanglish Version)
Somebody [Reggaeton Remix (Spanglish Version)]
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 0x590d36d8bb71ec2b68b3bcbf97755c95c15302f707b63862cfc878732722150e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUM71516113.
Mozart: Le nozze di Figaro, K. 492, Act 1: Recitativo. "Ah, son perduto!" (Cherubino, Susanna, Il Conte, Basilio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20582c55b3cf73f440661d576a0aaffdd890c52a88c7d1132e07759d93d8d6b8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBAYC8600636.
Le Nozze di Figaro, K. 492, Act II: Voi signor, che giusto siete
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71b0adc988960c3fec8ddeb7e1c8751f13bcdcb3bbfbecbe414fdb746e4b00c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:16:50Z), 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/GBAYC8600662.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Charpentier: Extremum Dei judicium, H. 401: XI. Chœur des élus. "Hymnum dicamus Domine nostro"
Charpentier: Le jugement dernier, Salve Regina & Miserere des Jésuites
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661cedd6995072905a2c0232ac5cfac0dad15038d242eb660ab9622b9d09d59e. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FRZ202200150.
Mendelssohn: Lauda Sion, Op. 73, MWV A24: No. 4, Quartetto. "In hac mensa novi regis"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77216aa281033ec61754658e4b3ff80afb768f2c15c49a4b208dd2cac201561. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FRZ207809804.
Mozart: Le nozze di Figaro, K. 492, Act 1: Terzetto. "Cosa sento! Tosto andate" (Il Conte, Basilio, Susanna)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bccef4dcb51b988a377580e0f69390f1774c6d2b58d6ecb6919b8c5552a5afc. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/GBAYC8600637.
Mozart: Le nozze di Figaro, K. 492, Act 1: Recitativo. "Basilio, in traccia tosto di Figaro volate" (Il Conte, Susanna, Cherubino, Basilio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d3a870be1b4352ae5ea9f2da2f30fccfdeed72be85d8769995c24ace5b1bd0. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/GBAYC8600638.
Mozart: Le nozze di Figaro, K. 492, Act 1: Recitativo. "Evviva!" (Figaro, Susanna, Basilio, Cherubino, Il Conte)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540fbc3d4a750f8dd991577c500fbe9e968cbedce34fb3cc5e70b8b3039bdb7c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBAYC8600642.
Schubert: Stabat Mater in F Minor, D. 383: No. 4, Duett. "Engel freuten sich der Wonne"
Schubert: Stabat Mater, D. 383, Offertorium, D. 963 & Magnificat, D. 486
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dabd32759d1894f6670e7dbc879b2b0475be4943227b18daa881399cd3d49e2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRZ207805004.