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 0x1154fc21daadab30997d36a12384dd479459cc6a0414a0bc6e45b6503bcbeb99. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab19e477-b21c-4190-a7fd-fe798b8c5f6f.json and https://artists.proofprofile.net/proofs/artist/ab19e477-b21c-4190-a7fd-fe798b8c5f6f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Milken Archive of Jewish Music: The American Experience
Milken Archive Digital Vol. 4 Album 11: Festivals (Mo'adim) & Other Occasions on the Liturgical Calendar, Pt. 3
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 0x88575df8511e6699dbe76c7ab1c2a51a8c4e3d35f39cee73eb0fe83375e0de5f. 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/HKI190955849.
Milken Archive Digital Vol. 4 Album 10: Festivals (Mo'adim) & Other Occasions on the Liturgical Calendar, Pt. 2
Milken Archive Digital Volume 6, Digital Album 1: Echoes of Ecstasy - Hassidic Inspiration
Milken Archive Digital, Vol. 4 Album 8: Cycle of Life in Synagogue & Home – Sabbath Eve, Pt. 2, Individual Settings, Pt. 2
Introducing The World Of American Jewish Music
Milken Archive Digital, Vol. 4, Cycle of Life in Synagogue and Home: Album 3, Weddings
Milken Archive Digital Vol. 3 Album 6: Seder t'fillot – Traditional & Contemporary Synagogue Services
Milken Archive Digital Vol. 3 Album 5: Seder t'fillot – Traditional & Contemporary Synagogue Services
Milken Archive Digital Volume 12, Album 2: Legend of Toil and Celebration - Songs of Solidarity, Social Awareness, and Yiddish Americana
Milken Archive Digital Volume 12, Album 1: Legend of Toil and Celebration - Songs of Solidarity, Social Awareness, and Yiddish Americana
Milken Archive Digital Volume 14, Album 4: Golden Voices in the Golden Land - The Great Age of Cantorial Art in America
Milken Archive Digital Volume 14, Album 3: Golden Voices in the Golden Land - The Great Age of Cantorial Art in America
Milken Archive Digital Volume 14, Album 2: Golden Voices in the Golden Land - The Great Age of Cantorial Art in America
First S'Lihot (The): The Entire Midnight Service According To Orthodox and Traditional Ritual
SPIRO, Simon: Traditional Cantorial and Concert Favorites
Milken Archive Digital Vol. 4 Album 9: Cycle of Life in Synagogue & Home – Sabbath Day
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607b932361df700fa1258a59c979a5b1a7f13d67ef709546fe86c0620997d898. 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/HKI190955790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d19e46aa3c2dfcb065de7cd3e7aa0e3ccb3c29bc30034c4895ce40fa8516e6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKI190955799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5551c08aa455bde298224616bfd120954ada5f7aeff0284d3f38fa19109ac2. 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/HKI190955800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832bc2dfb7079641863d077b84eb3c967981f0ec24745232bfd4544b3bcc29d0. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/HKI190955786.
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
Milken Archive Digital, Vol. 4 Album 6: Cycle of Life in Synagogue & Home
Milken Archive Digital Volume 4, Cycle of Life in Synagogue and Home: Album 4, Funerals and Memorial Services
Milken Archive Digital, Volume 20, Album 1: L'dor vador
Milken Archive Vol. 4, Album 2: Cycle of Life in Synagogue and Home
Milken Archive Vol. 4, Album 1: Cycle of Life in Synagogue and Home
Milken Archive of Jewish Music, Vol. 3, Album 2: Seder T'fillot
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128e0120879b676f9629e6c04cbdca88060d174e5c13273477871a8af6d126d9. 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/HKI190475111.
Milken Archive Digital Volume 3, Album 3: Seder T'Fillot
Milken Archive Digital Volume 3, Album 1: SEDER T'FILLOT - Traditional and Contemporary Synagogue Services
Milken Archive Digital Volume 8, Digital Album 1
Castelnuovo-Tedesco: Naomi and Ruth / Sacred Service for the Sabbath Eve