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 0x131e4ddc453be8d185ab8f5a4bbaea429b810cafcafd917233590452529d4748. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33852fa1-7980-4bbf-b6a2-9d1d004ae5ec.json and https://artists.proofprofile.net/proofs/artist/33852fa1-7980-4bbf-b6a2-9d1d004ae5ec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stabat Mater, Op. 58: I. Stabat Mater dolorosa (Andante con moto)
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 0x4b91c6664c92fc053be6fbf97c8fad774e7c8fd340c54177c781f809540c6a0d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BER181200901.
Stabat Mater, Op. 58: II. Quis est homo, qui non fleret (Andante sostenuto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8859eaa5de475d831d352074306a21efd5e5bae3fb10b7dc271bc2bdfbe5b69. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BER181200902.
Mehrstimmige Gesänge - Duette, Terzette, Quartette
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0c78bc3b78a2cb3256c01fac4fec2986622905af41d3bd2f3ba019f8ae23a9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ATP131205804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bf44fb97039184b295b1a24ffa832e0905c2f8131a4396a7b86b309ddd8dde. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ATP131205816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b91c6664c92fc053be6fbf97c8fad774e7c8fd340c54177c781f809540c6a0d. 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/BER181200901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8859eaa5de475d831d352074306a21efd5e5bae3fb10b7dc271bc2bdfbe5b69. 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/BER181200902.
Stabat Mater, Op. 58: III. Eja, Mater, fons amoris (Andante con moto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dee2051e57d93c7ee030f866c80a020b9910bc15fc03df7bc5bc2dbff33c5c. 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/BER181200903.
Stabat Mater, Op. 58: IV. Fac, ut ardeat cor meum (Largo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7ff91ea6568d3ebc4f0cc136c2890767c954976703b580f6a5ea38cf53c2a7. 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/BER181200904.
Stabat Mater, Op. 58: V. Tui nati vulnerati (Andante con moto, quasi allegretto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f07e620f7dabbbe1fa822732c91af12b344a655cfa7fa59a7fc54690a24caab. 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/BER181200905.
Stabat Mater, Op. 58: VI. Fac me vere tecum flere (Andante con moto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80b83a106ce781c5606bf6b1612f8d25fe0df6015e5538559ccacb37f27bb5d. 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/BER181200906.
Stabat Mater, Op. 58: VII. Virgo virginum praeclara (Largo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c57f4574486d0c823c9f208de556122ca233e7d58987058f48b4b737d7e0dd. 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/BER181200907.
Stabat Mater, Op. 58: VIII. Fac, ut portem Christi mortem (Larghetto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbdff1f91bbfdc6322e370998d5ca4accf70a854692f388bb2cd1c1f45a214c. 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/BER181200908.
Stabat Mater, Op. 58: IX. Inflammatus et accensus (Andante maestoso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91df4d9d4fde9cab4e47ed2c46ac3e808f8cd4121cc18998fccaf99e8df3a0c9. 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/BER181200909.
Stabat Mater, Op. 58: X. Quando corpus morietur (Andante con moto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b51bda9438d473c72a7bc6607ed929c8ac38c72027b6b7929a0070f95e538d. 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/BER181200910.
Beethoven: Symphony No. 9 in D Minor, Op. 125 (Resound Collection, Vol. 5)
Symphony No. 9 in D Minor, Op. 125: I. Allegro ma non troppo, un poco maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8965b37ef34c39c54caddb3344a04ba34d2e2a4791e8a8999b2992c579ed5767. 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/FR50X1647601.
Symphony No. 9 in D Minor, Op. 125: II. Scherzo (Molto vivace - Presto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1e5a33998935b9fdd57597ff82fcf14e04ae8056d91d8c85cdea453c4c9265. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR50X1647602.
Symphony No. 9 in D Minor, Op. 125: III. Adagio molto e cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68dd4e96146768bdaafe89c5d5f00cbbe0d65487b5f4546d9ac84d403fc74f1. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/FR50X1647603.
Bachkantate, BWV 214 - Tönet, ihr Pauken! Erschallet, Trompeten! (Live)
Weltliche Huldigungmusik, BWV 214 "Tönet, ihr Pauken! Erschallet, Trompeten!": I. Chor. "Tönet, ihr Pauken! Erschallet, Trompeten!" - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b477f94d99cb17e390df1c90d6161293b2b8ff10aec1b887ddfbf6d1051e39. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH9211600011.
Weltliche Huldigungmusik, BWV 214 "Tönet, ihr Pauken! Erschallet, Trompeten!": II. Rezitativ. "Heut ist der Tag" (Tenor) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601304ccc99a767b6862db74066b6786c12eef81cd81c65371908d1273073a46. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/CH9211600012.
Weltliche Huldigungmusik, BWV 214 "Tönet, ihr Pauken! Erschallet, Trompeten!": III. Arie. "Blast die wohlgegriffnen Flöten" (Sopran) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a8601d53757a7aee5fabd14b4eaa8ab48544c01027590b853d3a2c1f1d2afe. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CH9211600013.
Weltliche Huldigungmusik, BWV 214 "Tönet, ihr Pauken! Erschallet, Trompeten!": V. Arie. "Fromme Musen - meine Glieder" (Alt) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bdccbbb5d0de1d49070d6805dd8694452f002a25e721c5653965f7b0d32c4e7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH9211600015.
Weltliche Huldigungmusik, BWV 214 "Tönet, ihr Pauken! Erschallet, Trompeten!": VII. Arie. "Kron und Preis gekrönter Damen" (Bass) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b19eb100f57778037e08b83a9efbd081f041c6577d0df0f649887941d83f791. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH9211600017.
Weltliche Huldigungmusik, BWV 214 "Tönet, ihr Pauken! Erschallet, Trompeten!": IX. Chor. "Blühet, ihr Linden in Sachsen, wie Zedern" - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5995c6b7b342e1b16b4014435289b8b410331f231c931baf4b7edfc398f14e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CH9211600019.
Jurowski Conducts Mahler's Symphony No. 8 (Live)
Symphony No. 8 in E-Flat Major "Symphony of a Thousand", Part II: Alles Vergängliche ist nur ein Gleichnis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d69f8c4d388b7432a34f5bcc87d02c2b8426d6551cd394246dc710708e4166. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBHZU2112126.
Bachkantate, BWV 87 - Bisher habt ihr nichts gebeten in meinem Namen
Ferruccio Furlanetto: Verdi & Mussorgski
Wolf: Spanisches Liederbuch & Italienisches Liederbuch
J.S. Bach: Du sollt Gott, deinen Herren, lieben, BWV 77 (Live)