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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17df163875f738eb6572d63313642b72df24ea6ef0379bdb3d99c829827c5033. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a630ebca-258f-4954-a04f-fbd8ee35f327.json and https://artists.proofprofile.net/proofs/artist/a630ebca-258f-4954-a04f-fbd8ee35f327.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6698199c4f761f49eb2417d17d6b45878649b4a5d9f9a88095ae72561e1d635a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEE471700371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6f7613ab03403951e73958989c381a7f7f81787f9c2edd73b46c1ec759e89e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEE471700373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc727c79e1c7e47aebc5cb211e085fc33f9da5a4cdb5c9c6f1ef0df2f8b11264e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEE472400090.
Capriccio Pastorale (Italian Christmas Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f1ee3cddde78a0dec8739772e0aa0e167e746308f692135afec3747e83b96c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEE471500345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0511e653fde0d804e231995d0d38ace5767c04f99797dbb8d2261361e02228. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEE471500346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7116055af5846136e44250763c75a1f618a2c91b41fa50360386d63498a9407. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEE471500347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba2662be67551548d19102260740121133443ffc5a5ff38c4a6690314925828. 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/DEE471500349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff652f1d7462b0d43f2a068dd27fba702b6a2a3ffb0bd8a442e94437b8a731b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEE471500350.
Folía echa para mi Señora Doña Tarolilla de Carallenos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae22a37a76a23cc466c47409931ef6519cc29ed48e0282b40083de25add619d5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEE471500361.
Earth Music - Tales of Silver, Gold and Subterranean Secrets
Vidi Speciosam - A Lady Mass from the 16th Century
Fire Music - Infernal Flames and Celestial Blaze
Stadtpfeifer, Waits, Ministriles, Piffari. Instrumental Music of the XVI & XVII Centuries
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c87471e0596d731588e48a7d0dd54a487f6a509a6768b15d2937bc6c5a50e18. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEX990720109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a79d73f537d19242b891e3e98dd5cd65331fb6c1ce6c7dd1c508d23156a9775. 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/DEE472300005.
Gli amori d'Apollo e di Dafne: Sinfonia II
Terpsichore, Musarum Aoniarum: Ballet, TMA 268
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d32f5925a62a10f74b947dbc1a571e2e3e30c6c986421fb2f098d6861d8cef7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEE472100065.
Musica Ferdinandea - Ein Fest für Kaiser Ferdinand
Trio Baroque-Music for Baroque Oboe, Baroque Trumpet & Organ
Abendmusik / Evening Music - Buxtehude, Tunder, Grabbe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7a9992cde1608a996597ca4f68aca23f5a3a07a999db9f556508c18ce8a22c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEE472400573.
Prelude in C Major, BuxWV 137: III. Ciaconna (Arr. for Renaissance Ensemble by Katharina Bäuml)
Cento Concerti Ecclesiastici: Laudate Dominum à 2 Soprani, Basso e Continuo